Vehicle specifications -> Specifications for Your Toyota 4 Runner SUV Sixth Generation (2025-2026)

616  
8-1. Specifications  
8-1.Specifications  
Maintenanc e data (fuel, oil level, etc .)  
Dimensions and weight  
Overall length  
Overall width  
194.9 in. (4950 mm)  
77.9 in. (1980 mm)  
*2  
*3  
*4  
72.8 in. (1850 mm)  
73.2 in. (1860 mm)  
73.6 in. (1870 mm)  
*1  
Overall height  
Wheelbase  
112.2 in. (2850 mm)  
65.6 in. (1667 mm)  
Front and rear tread  
*5  
895 lb. (405 kg)  
Vehicle capacity weight (Occupants + luggage)  
*6  
1160 lb. (525 kg)  
*1  
:Unladen vehicles  
*2  
*3  
*4  
*5  
*6  
:245/70R17 tires  
:265/55R20 tires  
:265/70R18 tires  
:Vehicles without third seats  
:Vehicles with third seats  
Seating capacity  
Vehicle without third seats Vehicle with third seats  
5 (Front 2, Rear 3) 7 (Front 2, Rear 5)  
Seating capacity  
tering the ownership of your  
vehicle.  
Vehicle identification  
Vehicle identification num-  
ber  
This number is stamped on the  
front right frame.  
The vehicle identification num-  
ber (VIN) is the legal identifier  
for your vehicle. This is the pri-  
mary identification number for  
your Toyota. It is used in regis-  
617  
8-1. Specifications  
fication Label.  
This number is also on the top  
left of the instrument panel.  
The engine number is stamped  
on the engine block as shown.  
This number is also on the Certi-  
Engine  
Model  
Type  
T24A-FTS  
4-cylinder in line, 4-cycle, gasoline (with  
turbocharger)  
8
Bore and stroke  
Displacement  
3.44 3.91 in. (87.5 99.5 mm)  
3
146.0 cu.in. (2393 cm )  
Valve clearance  
Drive belt tension  
Automatic adjustment  
Automatic adjustment  
Fuel  
Fuel type  
Unleaded gasoline only  
618  
8-1. Specifications  
87 (Research Octane Number 91) or  
higher  
Octane rating  
Fuel tank capacity  
(Reference)  
19.0 gal. (72.0 L, 15.8 Imp.gal.)  
Lubrication system  
Oil capacity (Drain and refill  
[Reference*])  
5.9 qt. (5.6 L, 4.9 Imp.  
With filter  
qt.)  
Without  
filter  
5.6 qt. (5.3 L, 4.7 Imp.  
qt.)  
Outside temperature  
*
: The engine oil capacity is a refer-  
ence quantity to be used when  
changing the engine oil. When  
actually adding the engine oil,  
make sure that the oil level is  
between the low level mark and  
refill upper limit mark (P.532).  
Warm up and turn off the engine,  
wait about 8 minutes, and check  
the oil level on the dipstick.  
SAE 0W-20 is the best choice  
for good fuel economy and good  
starting in cold weather.  
If SAE 0W-20 is not available,  
SAE 5W-20 oil may be used.  
However, it must be replaced  
with SAE 0W-20 at the next oil  
change.  
Engine oil selection  
Oil viscosity (0W-20 is explained  
here as an example):  
Toyota Genuine Motor Oil” is  
used in your Toyota vehicle. Use  
Toyota approved “Toyota Genu-  
ine Motor Oil” or equivalent to  
satisfy the following grade and  
viscosity.  
• The 0W in 0W-20 indicates  
the characteristic of the oil  
which allows cold startability.  
Oils with a lower value before  
the W allow for easier starting  
of the engine in cold weather.  
• The 20 in 0W-20 indicates the  
viscosity characteristic of the  
oil when the oil is at high tem-  
perature.  
Oil grade:  
ILSAC GF-6Amultigrade engine  
oil  
Recommended viscosity: SAE  
0W-20  
How to read oil container label:  
The International Lubricant  
Specification Advisory Commit-  
619  
8-1. Specifications  
tee (ILSAC) Certification Mark is  
added to some oil containers to  
help you select the oil you  
should use.  
Cooling system  
*2  
*3  
12.7 qt. (12.0 L, 10.6 Imp.qt.)  
12.8 qt. (12.1 L, 10.6 Imp.qt.)  
*1  
Capacity  
Use either of the following:  
Toyota Super Long Life Coolant”  
Similar high-quality ethylene glycol-based non-  
silicate, non-amine, non-nitrite, and non-borate  
coolant with long-life hybrid organic acid tech-  
nology  
Coolant type  
Do not use plain water alone.  
*1  
:The fluid capacity is a reference quantity.  
If replacement is necessary, contact your Toyota dealer.  
*2  
*3  
:SR Package, SR5 Package and TRD Sport Package  
:TRD Off-Road Package and Limited Package  
8
Ignition system (spark plug)  
Make  
Gap  
NGK DILZKAR8E7H  
0.027 in. (0.7 mm)  
NOTICE  
Iridium-tipped spark plugs  
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.  
620  
Electrical system  
8-1. Specifications  
12.3 V or higher  
Open voltage at 68°F (20°C): (Turn the engine switch off and turn on the  
high beam headlights for 30 seconds.)  
Charging rates  
5 A max.  
Slow charge  
Automatic transmission  
*
12.2 qt. (11.5 L, 10.1 Imp.qt.)  
Toyota Genuine ATF WS  
Fluid capacity  
Fluid type  
*
: The fluid capacity is a reference quantity.  
If replacement is necessary, contact your Toyota dealer.  
NOTICE  
Automatic transmission fluid type  
Using transmission fluid other than the above type may cause abnormal  
noise or vibration, or damage the transmission of your vehicle.  
Transfer (4WD models)  
Vehicles with part-time 4WD  
1.2 qt. (1.1 L, 1.0 Imp.qt.)  
Vehicles with full-time 4WD  
Oil capacity  
1.5 qt. (1.4 L, 1.2 Imp.qt.)  
Toyota Genuine Transfer gear oil LF or  
Oil type and viscosity  
equivalent  
Your Toyota vehicle is filled with “Toyota Genuine Transfer Gear oil  
LF” at the factory.  
Use Toyota approved “Toyota Genuine Transfer Gear oil LF” or an  
equivalent of matching quality to satisfy the above specification.  
Please contact your Toyota dealer for further details.  
621  
8-1. Specifications  
Differential  
Vehicles with part-time 4WD  
1.4 qt. (1.3 L, 1.1 Imp.qt.)  
Vehicles with full-time 4WD  
1.3 qt. (1.2 L, 1.1 Imp.qt.)  
Front (4WD  
models)  
Oil capacity  
Rear  
5.9 qt. (5.6 L, 4.9 Imp.qt.)  
Toyota Genuine Differential Gear Oil LT  
75W-85 GL-5 or equivalent  
Oil type and viscosity  
Your Toyota vehicle is filled with “Toyota Genuine Differential Gear  
Oil” at the factory.  
Use Toyota approved “Toyota Genuine Differential Gear Oil” or an  
equivalent oil of matching quality to satisfy the above specification.  
Please contact your Toyota dealer for further details.  
Brakes  
*1  
3.7 in. (95 mm) Min.  
0.04 0.24 in. (1 6 mm)  
0.04 in. (1 mm)  
Pedal clearance  
Pedal free play  
Brake pad wear limit  
When pulling the parking brake switch for  
1 to 2 seconds: comes on  
*2  
Parking brake indicator  
When pushing the parking brake switch for  
1 to 2 seconds: turns off  
8
• FMVSS No.116 DOT 3 or SAE J1703  
• FMVSS No.116 DOT 4 or SAE J1704  
Fluid type  
*1  
*2  
:Minimum pedal clearance when depressed with a force of 67 lbf (300 N,  
31 kgf) while the engine is running.  
:Make sure to confirm that the brake warning light (yellow) does not illumi-  
nate. (If the brake warning light illuminates, refer to P.576.)  
Steering  
Free play  
Less than 1.2 in. (30 mm)  
622  
Tires and wheels  
8-1. Specifications  
17-inch tires (type A)  
Tire size  
245/70R17 110T  
Tire inflation pressure  
(Recommended cold tire  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
*
inflation pressure)  
Wheel size  
17 7J, 17 7J (spare)  
Wheel nut torque  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
*
2
: When vehicle is loaded: Add 4 psi (30 kPa, 0.3 kgf/cm or bar) with rear  
tires only for 2WD vehicle to the recommended cold tire pressure.  
17-inch tires (type B)  
Tire size  
245/70R17 110T, T175/90D18 111M (spare)  
Tire inflation pressure  
(Recommended cold tire  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
2
*
60 psi (420 kPa, 4.2 kgf/cm or bar) (spare)  
inflation pressure)  
Wheel size  
17 7J, 18 4 1/2T (spare)  
Aluminum wheels:  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
Wheel nut torque  
*
2
: When vehicle is loaded: Add 4 psi (30 kPa, 0.3 kgf/cm or bar) with rear  
tires only for 2WD vehicle to the recommended cold tire pressure.  
18-inch tires (type A)  
Tire size  
245/70R18 110H  
Tire inflation pressure  
(Recommended cold tire  
inflation pressure)  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
Wheel size  
18 7 1/2 J, 18 7 1/2 J (spare)  
Wheel nut torque  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
623  
8-1. Specifications  
18-inch tires (type B)  
Tire size  
265/70R18 116T  
Tire inflation pressure  
(Recommended cold tire  
inflation pressure)  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
Wheel size  
18 7 1/2 J, 18 7 1/2 J (spare)  
Wheel nut torque  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
20-inch tires (type A)  
Tire size  
265/55R20 113V  
Tire inflation pressure  
(Recommended cold tire  
inflation pressure)  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
Wheel size  
20 8J, 20 8J (spare)  
Wheel nut torque  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
20-inch tires (type B)  
Tire size  
265/55R20 113V, 245/75R17 112S (spare)  
Tire inflation pressure  
(Recommended cold tire  
inflation pressure)  
2
33 psi (230 kPa, 2.3 kgf/cm or bar)  
Wheel size  
20 8J, 17 7J (spare)  
Steel wheels:  
154 ft•lbf (209 N•m, 21.3 kgf•m)  
8
Wheel nut torque  
Aluminum wheels:  
97 ft•lbf (131 N•m, 13.4 kgf•m)  
Light bulbs  
Light bulbs  
Bulb No.  
7444NA  
W
Type  
Front turn signal/parking  
lights  
Exterior  
28/8  
A
A: Wedge base bulbs (amber)  
624  
8-1. Specifications  
Recommendation of the use of  
low emissions gasoline  
Fuel inform ation  
Gasolines containing oxygenates  
such as ethers and ethanol, as well  
as reformulated gasolines, are avail-  
able in some cities. These fuels are  
typically acceptable for use, provid-  
ing they meet other fuel require-  
ments.  
You must only use unleaded  
gasoline.  
Select octane rating 87  
(Research Octane Number  
91) or higher. Use of  
Toyota recommends these fuels,  
since the formulations allow for  
reduced vehicle emissions.  
unleaded gasoline with an  
octane rating lower than 87  
may result in engine knock-  
ing. Persistent knocking  
can lead to engine damage.  
Non-recommendation of the  
use of blended gasoline  
Use only gasoline containing up to  
15% ethanol.  
DO NOT use any flex-fuel or gas-  
oline that could contain more than  
15% ethanol, including from any  
pump labeled E30 (30% ethanol  
At minimum, the gasoline you  
use should meet the specifi-  
cations of ASTM D4814 in the  
U.S.A.  
), E50 (50% ethanol ), E85  
(85% ethanol ) (which are only  
Gasoline quality  
some examples of fuel containing  
more than 15% ethanol).  
In very few cases, driveability prob-  
lems may be caused by the brand of  
gasoline you are using. If driveability  
problems persist, try changing the  
brand of gasoline. If this does not  
correct the problem, consult your  
Toyota dealer.  
Recommendation of the use of  
gasoline containing detergent  
additives  
Toyota recommends the use of  
gasoline that contains detergent  
additives to avoid build-up of  
engine deposits.  
All gasoline sold in the U.S.A. con-  
tains minimum detergent additives  
to clean and/or keep clean intake  
systems, per EPA’s lowest addi-  
tives concentration program.  
If you use gasohol in your vehicle,  
be sure that it has an octane rat-  
ing no lower than 87.  
Toyota strongly recommends the  
use of Top Tier Detergent Gaso-  
line. For more information on Top  
Tier Detergent Gasoline and a list  
of marketers, please go to the offi-  
Toyota does not recommend the  
use of gasoline containing metha-  
nol.  
625  
8-1. Specifications  
Non-recommendation of the  
Fuel-related poor driveability  
use of gasoline containing MMT  
If poor driveability (poor hot start-  
ing, vaporization, engine knock-  
ing, etc.) is encountered after  
using a different type of fuel, dis-  
continue the use of that type of  
fuel.  
Some gasoline contains an octane  
enhancing additive called MMT  
(Methylcyclopentadienyl Manga-  
nese Tricarbonyl).  
Toyota does not recommend the use  
of gasoline that contains MMT. If  
fuel containing MMT is used, your  
emission control system may be  
adversely affected.  
When refueling with gasohol  
Take care not to spill gasohol. It  
can damage your vehicle’s paint.  
The malfunction indicator lamp on  
the instrument cluster may come on.  
If this happens, contact your Toyota  
dealer for service.  
If your engine knocks  
Consult your Toyota dealer.  
You may occasionally notice light  
knocking for a short time while  
accelerating or driving uphill. This  
is normal and there is no need for  
concern.  
NOTICE  
Notice on fuel quality  
Do not use improper fuels. If  
improper fuels are used, the  
engine will be damaged.  
Do not use leaded gasoline.  
Leaded gasoline can cause  
damage to your vehicle’s three-  
way catalytic converters caus-  
ing the emission control system  
to malfunction.  
8
Do not use gasohol other than  
the type previously stated.  
Other gasohol may cause fuel  
system damage or vehicle per-  
formance problems.  
Using unleaded gasoline with  
an octane number or rating  
lower than the level previously  
stated may cause persistent  
heavy knocking.  
At worst, this may lead to  
engine damage and will void the  
vehicle warranty.  
626  
8-1. Specifications  
Tire inform at ion  
Typical tire symbols  
Full-size tire  
Compact spare tire  
Tire size (P.628)  
DOT and Tire Identification Number (TIN) (P.627)  
Location of treadwear indicators (P.539)  
Tire ply composition and materials  
Plies are layers of rubber-coated parallel cords. Cords are the strands  
which form the plies in a tire.  
627  
8-1. Specifications  
Radial tires or bias-ply tires  
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a  
bias-ply tire.  
TUBELESS or TUBE TYPE  
A tubeless tire does not have a tube and air is directly put into the tire. A  
tube type tire has a tube inside the tire and the tube maintains the air pres-  
sure.  
Load limit at maximum cold tire inflation pressure (P.539)  
Maximum cold tire inflation pressure (P.622)  
This means the pressure to which a tire may be inflated.  
Uniform tire quality grading  
For details, see “Uniform Tire Quality Grading” that follows.  
Summer tires or all season tires (P.540)  
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a  
summer tire.  
“TEMPORARY USE ONLY”  
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY”  
molded on its sidewall. This tire is designed for temporary emergency use  
only.  
Tire size code  
Typical DOT and Tire  
Identification Number  
(TIN)  
Manufacturer’s optional tire  
type code (3 or 4 letters)  
8
Type A  
Tire manufacturer’s identifi-  
cation mark  
Manufacturing week  
Manufacturing year  
*
: The DOT symbol certifies that the  
tire conforms to applicable Fed-  
eral Motor Vehicle Safety Stan-  
dards.  
DOT symbol*  
Tire Identification Number  
(TIN)  
628  
8-1. Specifications  
Type B  
Section width (millimeters)  
Aspect ratio (tire height to  
section width)  
Tire construction code (R =  
Radial, D = Diagonal)  
Wheel diameter (inches)  
Load index (2 digits or 3 dig-  
its)  
DOT symbol*  
Speed symbol (alphabet with  
one letter)  
Tire Identification Number  
(TIN)  
Tire dimensions  
Tire manufacturer’s identifi-  
cation mark  
Manufacturer’s code  
Manufacturing week  
Manufacturing year  
*
: The DOT symbol certifies that the  
tire conforms to applicable Fed-  
eral Motor Vehicle Safety Stan-  
dards.  
Section width  
Tire height  
Tire size  
Wheel diameter  
Typical tire size information  
Tire section names  
The illustration indicates typical  
tire size.  
Bead  
629  
8-1. Specifications  
tread shoulder and maximum  
section width.  
Sidewall  
Shoulder  
Tread  
For example: Treadwear 200 Trac-  
tion AA Temperature A  
Treadwear  
Belt  
The treadwear grade is a com-  
parative rating based on the  
wear rate of the tire when tested  
under controlled conditions on a  
specified government test  
course.  
Inner liner  
Reinforcing rubber  
Carcass  
Rim lines  
Bead wires  
Chafer  
For example, a tire graded 150  
would wear one and a half (1 - 1/2)  
times as well on the government  
course as a tire graded 100.  
The relative performance of tires  
depends upon the actual conditions  
of their use. Performance may differ  
significantly from the norm due to  
variations in driving habits, service  
practices and differences in road  
characteristics and climate.  
Uniform Tire Quality  
Grading  
This information has been pre-  
pared in accordance with regu-  
lations issued by the National  
Highway Traffic Safety Adminis-  
tration of the U.S. Department of  
Transportation.  
Traction AA, A, B, C  
The traction grades, from high-  
est to lowest, are AA, A, B and  
C, and they represent the tire’s  
ability to stop on wet pavement  
as measured under controlled  
conditions on specified govern-  
ment test surfaces of asphalt  
and concrete.  
It provides the purchasers  
and/or prospective purchasers  
of Toyota vehicles with informa-  
tion on uniform tire quality grad-  
ing.  
8
Your Toyota dealer will help answer  
any questions you may have as you  
read this information.  
A tire marked C may have poor  
traction performance.  
DOT quality grades  
Warning: The traction grade  
assigned to this tire is based on  
braking (straight ahead) traction  
tests and does not include corner-  
ing (turning) traction.  
All passenger vehicle tires must  
conform to Federal Safety  
Requirements in addition to  
these grades. Quality grades  
can be found where applicable  
on the tire sidewall between  
630  
8-1. Specifications  
performance which all passenger  
car tires must meet under the Fed-  
eral Motor Vehicle Safety Standard  
No. 109.  
Temperature A, B, C  
The temperature grades are A  
(the highest), B, and C, repre-  
senting the tire’s resistance to  
the generation of heat and its  
ability to dissipate heat when  
tested under controlled condi-  
tions on a specified indoor labo-  
ratory test wheel.  
Grades B and A represent higher  
levels of performance on the labo-  
ratory test wheel than the minimum  
required by law.  
Warning: The temperature grades  
of a tire assume that it is properly  
inflated and not overloaded.  
Sustained high temperature can  
cause the material of the tire to  
degenerate and reduce tire life, and  
excessive temperature can lead to  
sudden tire failure.  
Excessive speed, underinflation, or  
excessive loading, either sepa-  
rately or in combination, can cause  
heat buildup and possible tire fail-  
ure.  
Grade C corresponds to a level of  
Glossary of tire terminology  
Tire related term  
Meaning  
Tire pressure when the vehicle has been  
parked for three hours or more, or has not  
been driven more than 1 mile or 1.5 km  
under that condition  
Cold tire inflation pressure  
Maximum inflation pressure  
The maximum cold inflated pressure to  
which a tire may be inflated, shown on the  
sidewall of the tire  
Recommended inflation pres- Cold tire inflation pressure recommended  
sure  
by a manufacturer  
The combined weight (in excess of those  
standard items which may be replaced) of  
automatic transmission, power steering,  
power brakes, power windows, power  
seats, radio and heater, to the extent that  
these items are available as factory-  
installed equipment (whether installed or  
not)  
Accessory weight  
631  
8-1. Specifications  
Tire related term  
Meaning  
The weight of a motor vehicle with stan-  
dard equipment, including the maximum  
capacity of fuel, oil and coolant, and if so  
equipped, air conditioning and additional  
weight optional engine  
Curb weight  
The sum of:  
(a) Curb weight  
Maximum loaded vehicle  
weight  
(b) Accessory weight  
(c) Vehicle capacity weight  
(d) Production options weight  
150 lb. (68 kg) times the number of occu-  
pants specified in the second column of  
Normal occupant weight  
Occupant distribution  
*
Table 1 that follows  
Distribution of occupants in a vehicle as  
*
specified in the third column of Table 1  
below  
The combined weight of installed regular  
production options weighing over 5 lb. (2.3  
kg) in excess of the standard items which  
they replace, not previously considered in  
curb weight or accessory weight, including  
heavy duty brakes, ride levelers, roof rack,  
heavy duty battery, and special trim  
Production options weight  
A metal support for a tire or a tire and tube  
assembly upon which the tire beads are  
seated  
8
Rim  
Rim diameter (Wheel diame-  
ter)  
Nominal diameter of the bead seat  
Rim diameter and width  
Rim size designation  
Rim type designation  
Rim width  
The industry manufacturer’s designation  
for a rim by style or code  
Nominal distance between rim flanges  
The rated cargo and luggage load plus 150  
lb. (68 kg) times the vehicle’s designated  
seating capacity  
Vehicle capacity weight (Total  
load capacity)  
632  
8-1. Specifications  
Tire related term  
Meaning  
The load on an individual tire that is deter-  
Vehicle maximum load on the mined by distributing to each axle its share  
tire  
of the maximum loaded vehicle weight,  
and dividing by two  
The load on an individual tire that is deter-  
mined by distributing to each axle its share  
of curb weight, accessory weight, and nor-  
mal occupant weight (distributed in accor-  
Vehicle normal load on the tire  
*
dance with Table 1 below), and dividing by  
two  
The surface area of the rim not covered by  
the inflated tire  
Weather side  
Bead  
The part of the tire that is made of steel  
wires, wrapped or reinforced by ply cords  
and that is shaped to fit the rim  
A breakdown of the bond between compo-  
nents in the bead  
Bead separation  
A pneumatic tire in which the ply cords that  
extend to the beads are laid at alternate  
angles substantially less than 90 degrees  
to the centerline of the tread  
Bias ply tire  
Carcass  
The tire structure, except tread and side-  
wall rubber which, when inflated, bears the  
load  
The breaking away of pieces of the tread  
or sidewall  
Chunking  
Cord  
The strands forming the plies in the tire  
The parting of cords from adjacent rubber  
compounds  
Cord separation  
Any parting within the tread, sidewall, or  
innerliner of the tire extending to cord  
material  
Cracking  
633  
8-1. Specifications  
Tire related term  
Meaning  
A pneumatic tire with an inverted flange  
tire and rim system in which the rim is  
designed with rim flanges pointed radially  
inward and the tire is designed to fit on the  
underside of the rim in a manner that  
encloses the rim flanges inside the air cav-  
ity of the tire  
CT  
A tire designed to operate at higher loads  
and at higher inflation pressures than the  
corresponding standard tire  
Extra load tire  
Groove  
The space between two adjacent tread ribs  
The layer(s) forming the inside surface of a  
tubeless tire that contains the inflating  
medium within the tire  
Innerliner  
The parting of the innerliner from cord  
material in the carcass  
Innerliner separation  
(a) The sidewall that contains a whitewall,  
bears white lettering, or bears manufac-  
turer, brand, and/or model name molding  
that is higher or deeper than the same  
molding on the other sidewall of the tire, or  
Intended outboard sidewall  
(b) The outward facing sidewall of an  
asymmetrical tire that has a particular side  
that must always face outward when  
mounted on a vehicle  
8
A tire designated by its manufacturer as  
primarily intended for use on lightweight  
trucks or multipurpose passenger vehicles  
Light truck (LT) tire  
The maximum load that a tire is rated to  
carry for a given inflation pressure  
Load rating  
The load rating for a tire at the maximum  
permissible inflation pressure for that tire  
Maximum load rating  
Maximum permissible inflation The maximum cold inflation pressure to  
pressure  
which a tire may be inflated  
The rim on which a tire is fitted for physical  
dimension requirements  
Measuring rim  
634  
8-1. Specifications  
Tire related term  
Meaning  
Any parting at any junction of tread, side-  
wall, or innerliner that extends to cord  
material  
Open splice  
Outer diameter  
Overall width  
The overall diameter of an inflated new tire  
The linear distance between the exteriors  
of the sidewalls of an inflated tire, including  
elevations due to labeling, decorations, or  
protective bands or ribs  
A tire intended for use on passenger cars,  
multipurpose passenger vehicles, and  
trucks, that have a gross vehicle weight  
rating (GVWR) of 10,000 lb. or less.  
Passenger car tire  
Ply  
A layer of rubber-coated parallel cords  
A parting of rubber compound between  
adjacent plies  
Ply separation  
A mechanical device made of rubber,  
chemicals, fabric and steel or other materi-  
als, that, when mounted on an automotive  
wheel, provides the traction and contains  
the gas or fluid that sustains the load  
Pneumatic tire  
A pneumatic tire in which the ply cords that  
extend to the beads are laid at substan-  
tially 90 degrees to the centerline of the  
tread  
Radial ply tire  
Reinforced tire  
Section width  
A tire designed to operate at higher loads  
and at higher inflation pressures than the  
corresponding standard tire  
The linear distance between the exteriors  
of the sidewalls of an inflated tire, exclud-  
ing elevations due to labeling, decoration,  
or protective bands  
That portion of a tire between the tread  
and bead  
Sidewall  
The parting of the rubber compound from  
the cord material in the sidewall  
Sidewall separation  
635  
8-1. Specifications  
Tire related term  
Meaning  
A tire that attains a traction index equal to  
or greater than 110, compared to the  
ASTM E-1136 Standard Reference Test  
Tire, when using the snow traction test as  
described in ASTM F-1805-00, Standard  
Test Method for Single Wheel Driving Trac-  
tion in a Straight Line on Snow-and Ice-  
Covered Surfaces, and which is marked  
Snow tire  
with an Alpine Symbol (  
one sidewall  
) on at least  
The rim on which a tire is fitted for testing,  
and may be any rim listed as appropriate  
for use with that tire  
Test rim  
That portion of a tire that comes into con-  
tact with the road  
Tread  
A tread section running circumferentially  
around a tire  
Tread rib  
Pulling away of the tread from the tire car-  
cass  
Tread separation  
The projections within the principal  
grooves designed to give a visual indica-  
tion of the degrees of wear of the tread  
Treadwear indicators (TWI)  
Wheel-holding fixture  
The fixture used to hold the wheel and tire  
assembly securely during testing  
8
*
: Table 1 -Occupant loading and distribution for vehicle normal load for var-  
ious designated seating capacities  
636  
8-1. Specifications  
Designated seating  
capacity, Number of  
occupants  
Occupant distribution in  
a normally loaded vehi-  
cle  
Vehicle normal load,  
Number of occupants  
2 through 4  
2
3
2 in front  
2 in front, 1 in second  
seat  
5 through 10  
2 in front, 1 in second  
seat, 1 in third seat, 1 in  
fourth seat  
11 through 15  
16 through 20  
5
7
2 in front, 2 in second  
seat, 2 in third seat, 1 in  
fourth seat