Wheels and Tires: Description and Operation

Wheels and Tires

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Part 2:

WARNING: Do not mix different types of tires on the same vehicle such as radial, bias or bias belted tires except in emergencies (temporary spare usage). Failure to follow these instructions may result in personal injury.

WARNING: Never run the engine with one wheel off the ground, for example when changing a wheel. The wheel resting on the ground may cause the vehicle to move. Failure to follow these instructions may result in personal injury.

WARNING: Aftermarket aerosol tire sealants are extremely flammable. Always question the customer to make sure these products have not been used. Failure to follow these instructions may result in personal injury.

WARNING: Always wear safety goggles or a face shield when performing any work with wheel and tire assemblies. Failure to follow these instructions may result in personal injury.

WARNING: Retighten the wheel nuts at 800 km (500 miles) after any wheel change or anytime the wheel nuts are loosened. Failure to follow these instructions may result in personal injury.

WARNING: Failure to retighten the wheel nuts at the specified mileage could cause the wheels to become detached while the vehicle is in motion. Failure to follow these instructions may result in personal injury.

WARNING: Each individual axle, wheel and tire has its own maximum weight or tire inflation rating. Do not overload or overinflate beyond the capacity of the lowest rated components of the system. Failure to follow these instructions may result in personal injury.

WARNING: When changing a wheel, make sure that the vehicle cannot move. Always apply the parking brake and select the transmission park position. Failure to follow these instructions may result in personal injury.

WARNING: Reduce air pressure as much as possible by pushing the valve core plunger in before removing the valve core. Failure to follow these instructions may result in personal injury.

CAUTION: Do not clean aluminium wheels with steel wool, abrasive type cleaners or detergents. Failure to follow these instructions may result in damage to the vehicle.

Locking Wheel Nuts
Locking wheel nuts are fitted to certain markets and are available as an accessory in other markets.

One locking wheel nut is fitted to each road wheel and may only be removed by using the correctly coded socket.

Locking wheel nuts are available in one length. The correct socket is supplied with the vehicle tool kit Sets of sockets are available to Jaguar dealers.

Recommended Tires
The radial ply tires recommended by Jaguar meet the high speed performance of the vehicle. Only tires of identical specification may be fitted as replacements. Under no circumstances must cross-ply tires be fitted.

Tire inflation Pressures
All recommended tires, including winter tires, must be inflated to the pressures shown in the Specifications sub-section. Inflation pressures must only be checked when the tires are cold.

Tire Replacement and Wheel-interchanging
When the replacement of a tire is necessary, it is preferable to fit a complete set. if two replacement tires are fitted (to one axle), they must be of the same manufacturer and type as those on the other axle.

New tires must be balanced before fitting to the vehicle.

Winter (Snow) Tires
Winter tires must only be fitted in complete four-wheel sets of the same type and size. The maximum speed with winter tires fitted (without snow chains) is 210 km/h (131 mile/h) for H rated tires or 240 km/h (149 mile/h) for V rated tires.

When using snow chains, note that
^ Snow chains must only be fitted to the rear wheels.
^ Only Jaguar snow chains should be used.
^ Snow chains must not be used on roads which are clear of snow.
^ The maximum speed with winter tires and snow chains fitted is 48 km/h (30 mile/h).
^ Traction control (where fitted) must be switched OFF when using snow chains.

Rotational indicators
Some recommended winter tires may have an arrow moulded in the sidewall to indicate the correct direction of rotation. it is essential tires are fitted so that the arrow is pointing in the direction of rotation.

Some of the recommended tires for normal and winter use have an asymmetric tread pattern. These tires have inside and outside markers which should be fitted appropriately to the wheel.

Temporary-Use Spare Wheel
In certain markets, the spare wheel supplied with the vehicle is of the temporary-use type. it is narrower than the normal road wheel and takes up less room in the wheel luggage compartment

When using this type of spare wheel note that:
^ Maximum speed must not exceed 80 km/h (50 mile/h).
^ The normal road wheel must be replaced as soon as possible.
^ Only one temporary-use wheel may be fitted to the vehicle at any time.
^ Traction control (where fitted) must be switched OFF.

Tread Wear indicator
Tread wear indicators are molded into the bottom of the tread grooves across the width of the tire. The tire must be renewed when tread wear indicators become visible at the surface of the tread, in two or more adjacent tread grooves.

Note that tire tread depth and condition must comply with prevailing local legislation.