LISTA DE FORMATOS Y DOCUMENTOS QUE COMPONEN LA OFERTA TÉCNICA Orden Referencia Documento de la Oferta Técnica Formato

Brakes: do not rest your foot on the brake pedal while the car is in motion. Even slight continuous pres- sure on the brake pedal could cause overheating, brake pad wear or even brake system failure.

Aquaplaning: when driving on wet or slushy surfaces, reduce speed to pre- vent a wedge of water from forming between the tyre and the road. This sit- uation means that the tyre can actually lose contact completely with the road surface, so that the car can neither be steered nor can the brake be properly applied.

Water on the road: when there is water on the roads, only drive through to a max. depth of 30 cm (12 in), and no faster than a walking pace, otherwise damage to the engine, electrical system and transmission may be caused. Rear-window shelf: do not place heavy or hard objects on the shelf, or these could injure the car's occupants when the brakes are applied.

Coat hooks: items of clothing hung from the hooks must not obstruct the driver's view. Do not hang heavy objects from the hooks, otherwise they could endan- ger the car's occupants in the event of

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Anti-lock Brake System ABS

The principle

ABS prevents the wheels from locking when the brakes are applied, and thus increases active safety.

With ABS in action, the car achieves the shortest possible braking distances for the prevailing conditions – straight-line braking or cornering, on asphalt, ice, wet roads etc.

Braking with ABS

You use ABS most effectively by apply- ing maximum brake pressure in situa- tions which call for this (full braking). The brake pedal pulsates and the noise of the hydraulic control system is audi- ble, warning the driver that the ABS is active.

Dynamic Brake Control DBC

DSC incorporates the DBC functional- ity, see page 79.

When you apply the brakes rapidly this system automatically ensures maximum brake-servo boost, thus helping mini- mise braking distance in an emergency. The advantages of ABS are also uti- lised.

While braking is in progress, do not reduce the pressure applied to the brake pedal. DBC is deactivated when you release the brake pedal.

Cornering Brake Control CBC

CBC is a development based on ABS. When the brakes are applied on a cor- ner when lateral acceleration is high, or during a lane change, it further

improves the car's stability and makes it easier to steer.

Brakes

Brake fluid level

If the brake fluid level is too low and if brake pedal travel is longer than usual, one of the two hydraulic brake circuits may have failed.

Visit your nearest BMW Service. When driving the car in this condi- tion, note that higher brake pedal pres- sure and longer brake pedal travel may be necessary. Modify your driving style

accordingly.<

Disc brakes

If the car covers only short distances, stands out of use for lengthy periods and is only used infrequently or gently, corrosion and dirt will affect the brake discs and pads more severely, because the minimum loads needed to achieve the desired self-cleaning effect of the disc brakes were not reached.

When the brakes are applied, corroded discs tend to judder, and even lengthy brake applications usually fail to elimi- nate this effect entirely.

Ov ervi ew Contr ol s M ai nt enan ce M in or repai rs Da ta or ds

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In damp weather or heavy rain it is advisable to apply the brakes from time to time. When doing so, make sure that no other road-user is endangered. The resulting heat dries the brake discs and pads. Full braking power will subse- quently be available when needed. When descending long or steep hills, select the gear or range which calls for a minimum amount of braking. This avoids brake overload. Bear the engine- speed limits in mind: see page 70.

Never drive with the clutch pedal depressed, with the shift lever or selector lever* in neutral, or while the engine is switched off, otherwise engine braking action will not be present with the transmission in neutral and there will be no power assistance for the brakes and steering while the engine is switched off.

BMW 325xi, 330xi, 330xd: always have the brakes checked by BMW Service, as otherwise parts of the all-wheel drive

could be damaged.<

Brake pads

For your own safety: use only brake pads approved for your car by the manufacturer. The manufacturer cannot assess the suitability of unap- proved brake pads and therefore can-

not warrant road safety.<

117 Wheels and tyres

Tyre pressures

Information for your safety

The factory-approved radial-ply (braced tread) tyres have been chosen to match your car's performance and to ensure driving safety and the desired standard of ride comfort.

The condition of the tyres and mainte- nance of the correct tyre pressures not only influence tyre life but are also deci- sive factors in ride quality and above all in road safety.

Incorrect pressures are often a cause of tyre problems. They also have a consid- erable effect on the roadholding of your BMW.

Check tyre pressures regularly (see page 24) – including your BMW's compact or full-size spare wheel – at least every two weeks and before you start a long journey. Incor- rect tyre pressures can adversely affect the car's roadholding and cause tyre damage, which could result in an acci-

dent.<