2025-2026 Volvo EX30 4 Door Care and maintenance -> Designations on tyre sidewall User Manual
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Care and maintenance -> Designations on tyre sidewall for Your Volvo EX30 4 Door First Generation (2025-2026)

Hard acceleration, heavy braking and driving in a way which causes screeching tyres lead to increased tyre wear.  
Tyre wear increases with speed.  
Unbalanced wheels cause uneven and excessive tyre wear and reduced ride comfort.  
Wheels must have the same direction of rotation during their entire service life.  
The rear tyre grip should always be equal to, or better than, the front tyre grip to reduce the risk of oversteering in case of  
heavy braking.  
Tyres or wheel rims may be damaged permanently if you hit kerb stones or drive into deep holes.  
Driving style, road conditions and climate affect the tyre wear.  
13.4.2. Designations on tyre sidewall  
There are many digits, numbers and symbols that may be found on a tyre's sidewall. Here are some examples  
and explanations of what they indicate.  
Note  
Be aware that the following tyre designations are only examples. Not all of these designations may be available for your  
tyres and there may be designations on your tyres which are not included here.  
Tyre dimensions  
All tyres have a designation of dimensions, such as: 265ꢀ40 R21 98 W  
Tyre width (mm).  
265  
40  
R
Ratio between tyre wall height and tyre width (%).  
Radial ply. The designation RF and symbol specify that the car is equipped with puncture-resistant tyres.  
Rim diameter (inches).  
21  
Codes for the maximum permitted tyre load, Load Index.  
Speed rating for maximum permitted speed, Speed Symbol.  
98  
W
Wheel rim dimensions  
All wheel rims have a designation of dimensions, such as: 8J x 19 x 50  
Rim width (inches).  
8
Rim flange profile.  
J
Rim diameter (inches).  
19  
50  
Offset in mm (distance from wheel centre to wheel contact surface against the hub).  
Weather condition classification  
Here are some classification examples. Weather capabilities can also be defined with certain symbols.  
Mud and Snow.  
All Terrain.  
M+S or MꢀS  
AT  
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All Season.  
AS  
Tyre age  
Tyre Identification Number or TIN. This information helps the tyre manufacturer identify tyres in the event of safety recalls.  
DOT YLX2 0819  
ꢁ. DOT[1]  
ꢂ. The first two characters are the code for the plant where the tyre was manufactured.  
ꢃ. The next two characters are the tyre's size code.  
ꢄ. The last four digits specify the week and year the tyre was manufactured. For example, 0819 means that the tyre was  
manufactured during week 08, year 2019.  
Any numbers or letters shown in between are market codes chosen by the manufacturer.  
Max load and pressure  
Specifies the maximum load that the tyre can carry.  
Max load 685 kg (1610 lbs)  
The maximum tyre pressure that the tyre should ever be subjected to. This limit is specified by the tyre manufacturer.  
Max pressure 240 kPa (35 psi)  
Minimum permitted load index and speed rating  
Warning  
The minimum permitted load index (LI) and speed rating (SS) for the tyres for each respective motor variant are shown in  
the specifications sections. If a tyre with too low a load index or speed rating is used, it may overheat and become  
damaged.  
Type, materials and tyre rotation  
Indicates that the tyre is for passenger vehicles.  
Volvo original tyres.  
P
VOL  
States the number of cord layers or number of layers with rubber-coated fabric in the tyre's tread and sidewall. The tyre  
manufacturers must also state the layer materials used in the tyre and sidewall, which may be steel, nylon, polyester and certain  
other materials.  
Plies: Tread 2 polyester, 2 steel, 1  
polyamide. Sidewall 2 polyester.  
Tyres with a tread pattern designed to only turn in one direction have the direction of rotation marked with an arrow.  
Arrow symbol  
Classification of uniform tyre quality  
The treadwear grade is a comparative rating based on the wear-rate of the tyre in a standardised test. A higher value is better.  
Treadwear grade  
200  
The traction grade is based on standardised straight-ahead braking traction tests. The traction grades, from highest to lowest, are AA, A, B and C.  
Traction grade AA  
The temperature grade reflects the thermal performance of a tyre that is properly inflated and not overloaded. The temperature grades, from highest  
to lowest, are A, B and C.  
Temperature grade  
A
[1]  
Department of Transportation  
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13.4.2.1. Tyre tread wear indicators  
There are tread wear indicators to show the status of the tyre's tread depth.  
The narrow grooves that run lengthways across the tyre's tread pattern are tread wear indicators. On the side of the tyre are the  
letters TWI[1]  
.
Important  
Tyres should be changed before wearing them down to the tread wear indicators to avoid poor traction in rain and  
snow.  
Volvo recommends that winter tyres have a greater tread depth than 3 millimetres (1ꢀ8 inch) and summer tyres  
1.6 millimetres (1ꢀ16 inch).  
[1]  
Tread Wear Indicator  
13.4.3. Changing wheels  
If you need to change a wheel, it's important to follow the recommended procedure.  
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instances. For more information, refer to the first page for the complete disclaimer note.  
322 / 396  

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