Get Mobility -> Wheels and tyres Guide for BMW Z4 2 Door Second Generation (2009-2016)

Wheels and tyres

Mobility

Wheels and tyres

more than 2 km or when the vehicle has been

parked for at least two hours.

Vehicle equipment

This chapter describes all the standard equip‐

ment, national-market-specific equipment and

optional extras offered in the model series.

Consequently, you will find that it contains de‐

scriptions of items not available in a particular

vehicle on account of a combination of options,

for example, or the constraints applying to cer‐

tain national-market versions. This also applies

to safety-relevant functions and systems.

Filling devices may indicate a tyre pressure

that is too low by up to 0.1 bar.

If you are using the runflat indicator: Reinitial‐

ise the runflat indicator, see page 82, with a

new value after adjusting the tyre pressure.

If you are using the Tyre Pressure Monitor: Re‐

set the Tyre Pressure Monitor, see page 85,

with a new value after adjusting the tyre pres‐

sure.

Country-specific regulations must be observed

when using the corresponding functions and

systems.

Tyre pressure values

Tyre pressure

Information for your safety

The condition of the tyres and maintenance of

the correct tyre pressures not only influence

tyre life but are also decisive factors in road

safety and driving comfort.

The tyre pressures for the approved tyre sizes

are visible on the driver's door post when the

driver's door is open.

Checking pressures

Tyres are subject to a natural, even loss of

pressure.

If you do not see any tyre pressures listed for

your tyres' speed code letter, observe the tyre

pressures for the corresponding size, e.g.

225/45 R 17.

Checking tyre pressures regularly

Check the tyre pressures regularly and

adjust, as necessary, but at least twice a month

and before any long journey. Incorrect tyre

pressures can adversely affect the car's road

holding and cause tyre damage, which could

result in an accident.◀

Reinitialise the runflat indicator, see page 82,

after adjusting tyre inflation pressures.

For Australia/New Zealand

Inflation pressures are specified on the tyre la‐

bel affixed to the driver's door post.

Tyres heat up as you drive, and the tyre pres‐

sure rises with the tyre temperature. The tyre

pressures listed are based on cold tyres or

tyres at ambient temperature.

Warning

The inflation pressures on the tyre label

are applicable only for tyres explicitly men‐

tioned on the label. Since inflation pressures

for tyres that may be covered by the label – by

Only check the tyre pressure when the tyres

are cold. In other words, do it before driving

157

Mobility

Wheels and tyres

size, speed category and load rating/load index

– but not explicitly mentioned on the label may

be different, please obtain adequate inflation

pressures in accordance with the tyre manu‐

facturer’s specifications at your tyre dealer.◀

Tyre damage

Inspect tyres frequently for damage, the pres‐

ence of foreign bodies and wear.

Vehicle behaviour that is an indication of tyre

damage or other faults:

Tyre size

▷

Unusual vibrations while the vehicle is in

motion.

The tyre pressures are for BMW approved tyre

sizes and recommended tyre makes, details of

which are available on request from your Serv‐

ice centre.

▷

Unusual vehicle response, such as pro‐

nounced pulling to the left or right.

In the event of tyre damage

If there are indications of tyre damage,

reduce speed immediately and have the

wheels and tyres checked without delay, oth‐

erwise there is an increased risk of accident.

Tyre tread

Summer tyres

Do not permit the tyres to wear to a tread

depth of less than 3 mm, approx. 1/8 in.

Drive carefully to the nearest Service Centre or

specialist tyre dealer.

Have the car towed there if necessary.◀

Below a tread depth of 3 mm, 1/8 in there is a

high risk of aquaplaning.

Repairing tyre damage

For safety reasons, the manufacturer of

your vehicle advises against having damaged

run-flat tyres repaired; have them replaced in‐

stead. Otherwise subsequent damage cannot

be excluded.◀

Winter tyres

The tyre tread depth should not be less than

4 mm, 3/16 in.

Below a tread depth of 4 mm, 3/16 in, suitabil‐

ity for vehicle operation in winter is restricted.

Minimum tread depth

Runflat tyres

Label

Wear indicators are distributed across the tyre

circumference and have the legally prescribed

minimum height of 1.6 mm, 1/16 in.

RSC marking on the tyre sidewall.

They are identified on the tyre’s side wall by

TWI, Tread Wear Indicator.

These wheels consist of tyres that are self-

supporting within certain limitations, and spe‐

cial rims.

158

Wheels and tyres

Mobility

The reinforced side wall means that the tyre

keeps the vehicle mobile to a degree even if

pressure has been lost.

Incorrect wheel and tyre combinations will in‐

terfere with the proper functioning of various

systems, such as ABS and DSC.

To maintain good vehicle handling, always fit

tyres of the same make and tread pattern to all

wheels.

Driving with damaged tyre, see page 84.

Changing run-flat tyres

After a tyre has been damaged, fit the original

wheel and tyre combination again.

For your own safety, use only run-flat tyres.

There is no spare wheel available in the event

of a puncture. Your Service centre will be

pleased to advise.

Approved wheels and tyres

The manufacturer of your vehicle recom‐

mends using only wheels and tyres that have

been approved for a specific vehicle type.

Age of tyres

Even if nominally the same dimension, tyres

could make contact with the body, for example

due to manufacturing tolerances and result in

serious accidents.

Recommendation

Irrespective of wear, change tyres after

six years at the latest.

The manufacturer of your vehicle is unable to

assess the suitability of tyres and wheels it has

not approved, and therefore cannot guarantee

their safety.◀

Date of manufacture

On the tyre side wall:

DOT … 0313: the tyre was made in the

03rd week of 2013.

Recommended makes of tyre

Replacement of wheels and

tyres

Fitting

Information on tyre mounting

Only have tyres fitted, including balanc‐

ing, by your Service Centre or by a specialist

tyre dealer.

Certain makes of tyre are recommended by the

manufacturer of your vehicle depending on

tyre size. These can be seen by the asterisk on

the side wall of the tyre.

If such work is performed inexpertly, it could

result in consequential damage and thus con‐

stitute a safety risk.◀

When properly used, these tyres meet the

highest standards in terms of safety and han‐

dling characteristics.

Wheel and tyre combination

Your Service centre can provide details of the

right wheel/tyre combination and rim designs

for your car.

Retreaded tyres

The manufacturer of your vehicle advises

against the use of retreaded tyres.

159

Mobility

Wheels and tyres

Retreaded tyres

Tyre storage

Due to their potentially different internal

construction and advanced age, their durability

may be limited and their road safety therefore

questionable.◀

Store wheels and tyres in a cool, dry and pref‐

erably dark place when not in use.

Protect tyres against contamination from oil,

grease and fuel.

Do not exceed the maximum tyre pressure in‐

dicated on the tyre's side wall.

Winter tyres

Winter tyres are recommended for operation

on winter roads or at temperatures below

+7 ℃/+45 ℉.

Snow chains

Although so-called all-season tyres with an M

+S marking have better winter characteristics

than summer tyres, they do not normally

match the performance of winter tyres.

Only certain fine-link snow chains have been

tested by BMW, classified as safe for use and

recommended. The Service centre is able to

provide the details of these makes.

Fit snow chains in pairs and only to the rear

wheels. When fitting, comply with the snow

chain manufacturer's instructions. When snow

chains are fitted, do not exceed

Top speed of winter tyres

If the car is capable of speeds higher than the

speed permitted for the winter tyres, a sticker

stating the maximum permitted speed for the

tyres fitted must be displayed in the driver's

field of view. Specialist tyre dealers and your

Service centre can supply the sticker.

50 km/h/30 mph.

Do not initialise the runflat indicator if snow

chains are fitted, as the instrument might issue

an incorrect reading.

Top speed for winter tyres

When driving with snow chains fitted, it can be

advisable to activate DTC for a short time, see

page 90.

Do not exceed the top speed for the win‐

ter tyres in use, otherwise tyre damage poten‐

tially leading to an accident could occur.◀

Runflat tyres

For your own safety, use only run-flat tyres.

There is no spare wheel available in the event

of a puncture. Your Service centre will be

pleased to advise.

Interchanging front and rear wheels

The manufacturer of your vehicle advises

against interchanging the front and rear

wheels.

This could impair vehicle handling.

In the case of tyres of different sizes, such

modifications are not permitted.

160

Mobility -> Wheels and tyres for Your BMW Z4 2 Door Second Generation (2009-2016)

Related Topics

Mobility

Popular Owner Manuals

Latest Owner Manuals