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
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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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Tire repair set
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,
Tire chains
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
Tire pressure monitor
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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Antilock Braking System
ABS
The Antilock Braking System (ABS) prevents
locking of the wheels during braking.
The vehicle maintains its steerability even during
emergency braking, which increases the active
driving safety.
ABS is operational every time you start the engine.
Brake assistant
The Brake Assistant effects maximum
Distribution Box, Power
REPLACING DISTRIBUTION BOX (LUGGAGE COMPARTMENT)
WARNING: Observe safety instructions for handling vehicle battery.
Necessary preliminary tasks:
Disconnect battery negative lead.
Remove flap in luggage compartment panel on right.
Release expansion rivet (1).
Remove insulating mat (2).
Fig. 143
