BMW X5 Owner's Manual download pdf (Page 146)

144n

Wheel/tire condition Replacing wheels/tires

Tire tread

The tread depth should not fall below

e in/3 mm.

At tread depths below e in/3 mm there

is an increased risk of high-speed

hydroplaning, even when only small

amounts of water are present on the

road surface.

As winter tires display a noticeable loss

in their ability to cope with cold-

weather driving conditions once the

tread wears to below k/K in/4 mm, to

ensure continued safety you should

always have such tires replaced.

Wear indicators at the tread-groove

base, arrow, are distributed over the

tire's circumference and are marked on

the side of the tire with TWI – Tread

Wear Indicator. These indicators signal

at a tread depth of k/FK in/1.6 mm that

the legally permitted wear limit has

been reached.

390de331

Unprofessional attempts by lay-

men to service tires can lead to

damage and accidents.

Have this work performed by skilled

professionals only. The technicians at

your BMW Sports Activity Vehicle cen-

ter will be glad to assist you with the

required professional knowledge and

specialized equipment.<

The correct wheel and tire combination

also affects various systems whose

function would otherwise be impaired,

e.g. ABS, DSC, xDrive.

Have the wheel and tire assemblies bal-

anced every time either a wheel or a tire

is replaced.

BMW does not recommend the

use of retread tires, as otherwise

driving safety may be reduced. Possible

variations in the design and the age –

which could be substantial – of the car-

casses can lead to unusually rapid

wear.<

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