BMW X5: Runflat tires
Principle
Run-flat tires permit continued driving under restricted
conditions even in the event of a complete
tire pressure loss.
General information
The wheels consist of tires that are self-supporting,
to a limited degree, and possibly special
rims.
The reinforcement of the sidewall allows the tire
to remain drivable to a restricted degree in the
event of a tire pressure loss.
Follow the instructions for continued driving with
a flat tire.
Safety information
Warning
The vehicle handles differently when a run-flat
tire has insufficient or no tire pressure; for instance,
reduced lane stability when braking,
braking distances are longer and the self-steering
properties will change. There is a risk of accident.
Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Warning
Heavy trailers can start swinging when continuing
to drive with a flat tire. There may be a risk
of accident or risk of damage to property. Do
not exceed a speed of 35 mph/60 km/h when
driving with a trailer and a flat tire. Immediately
brake in the case of swinging. Apply necessary
steering corrections as carefully as possible.
Identification
The tires are marked on the tire sidewall with
Run-flat System Component RSC.
Repairing a flat tire
Safety measures
- Park the vehicle as far away as possible from
passing traffic and on solid ground.
- Turn on the hazard warning system.
- Secure the vehicle against rolling away by
setting the parking brake.
- Turn the steering wheel until the front wheels
are in the straight-ahead position and engage
the steering wheel lock.
- Have all vehicle occupants get out of the vehicle
and ensure that they remain outside the
hazardous area in a safe place, such as behind
a guardrail.
- If necessary, set up a warning triangle at an
appropriate distance.
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Principle
With the tire repair set, minor tire damage can be
sealed temporarily to enable continued driving.
General information
To enable continued driving, liquid sealant is
pumped into the tire,
Safety information
Warning
With the mounting of tire chains on unsuitable
tires, the tire chains can come into contact with
vehicle parts. There may be a risk of accident
or risk of damage to property
Principle
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pressure
has dropped.
General information
Sensors in the tire valves measure the tire inflation
pressure
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Fig. 62: Identifying Brake Master Cylinder/Brake Booster Components
Brake booster
Expansion tank
Vacuum hose
Brake master cylinder
Bleeding braking system
REMOVING AND INSTALLING / REPLACING EXPANSION TANK FOR HYDRAULIC
BRAKE ACTUATION
Necessary preliminary tasks:
Read and comply with Gene
The turbocharger is driven by the engine's exhaust gases, i.e. exhaust gases
under pressure are routed by the turbocharger turbine and in this way delivers
the motive force to the compressor, which rotates on the same
shaft.
It is here that the induction air is precompressed in such a way that a