Tyres
- Make
- Alfa Romeo
- Model
- 155 Factory Service Manual
- Year
- 1992–1998
- Section
- Tyre pressure and wear › Tyres
CAUTION: The spare wheel must only be used in an emergency and its use must be reduced to a minimum. The speed of the vehicle must not exceed 80 kph. The vehicle will handle differently when the spare wheel is used.
Ensure that the tyre pressure of the spare wheel is 4.2 bars (kg/cm²). The wheel must only be used for a total of 3,000 kilometers and then replaced with another of the same type.
RIM: 4Jx15"
TYRE: 115/70 R15" 90M.
Never fit a traditional tyre to the rim of the compact spare wheel.
No more than one compact spare wheel must be used at any time.
TYRES
GENERALITIES
The tyres fitted to the vehicle are of the tubeless type and do not contain an inner tube. To maintain the characteristics of comfort and safety and to ensure that the tyres last, the following should be observed:
- The wheels should be balanced and the front and rear suspension adjusted correctly.
- Do not insert any object between the rim and the tyre.
- If the rims is bent or damaged, replace it.
- When balancing the wheels, counter-weights which are specific for tubeless tyres must be used.
- The tyre pressure (including the compact spare wheel) must be as specified (see: TECHNICAL CHARACTERISTICS AND SPECIFICATIONS - CHARACTERISTIC DATA).
- Inner tubes must not be fitted to tubeless tyres.
The obtain a uniform wear pattern between the tyres on the front and those on the rear axle, the wheels should be swapped round every 10,000 - 15,000 kilometers, however, so that the direction of rotation is not changed, the tyres must remain on the same side of the vehicle.
CAUTION: Do not cross the tyres over when replacing.
Some types of tyres are fitted with wear detectors and as soon as these indicators can be seen on the tread the tyre must be replaced. Check that the tread is evenly worn.
Worn tyres increase the risk of aquaplaning on wet roads.
Violent knocks against kerb stones, holes in the road surface and various other obstacles and when the vehicle is driven for long periods on badly made roads may result in small cuts on the tyre which are often difficult to see. These result in deformation, swelling and cuts on the side of the tyre which can cause sudden deflation or blow-outs.
TYRE PRESSURE AND WEAR
The correct tyre pressure influences both the duration of the tyre and its road-holding characteristics and consequently the safety of the vehicle and its passengers.
The pressure of each tyre, including the spare wheel, must be checked regularly and especially before long journeys.
When checking the tyre pressure the tyres must be cold. Use a pressure gauge and inflate to the specified pressure.
If the tyre is not at the correct pressure it will not wear correctly:
A. Normal pressure
A correct pressure ensures that the tyre will have a longer life and give better results as the tread will use its entire width and the wear pattern will be more uniform.
This condition leads to:
- Better road holding.
Parts & tools for this job For 1992 Alfa Romeo 155
- TOOLTyre pressure gaugeSearch: digital tyre pressure gauge
- TOOLTorque wrenchSearch: 1/2 inch torque wrench
- TOOLBreaker barSearch: breaker bar
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