Defender. Manual — part 23
Wheels and Tires - Wheels and Tires
Description and Operation
GENERAL
Dependent on specification and model type, the vehicle is equipped with pressed steel or alloy wheel rims, both using
tubeless radial ply tires.
Tire codes
The text, codes and numbers moulded into the tire wall vary between tire manufacturers, however most tires are
marked with the information shown in the illustrated example.
• NOTE: The illustration is an example of the type of markings moulded into tires and is for guidance only. For specific
tire specifications.
For additional information, refer to:
Specifications
(204-04 Wheels and Tires, Specifications).
Item
Part
Number
Description
1.
-
Type of tire construction - Radial Ply
2.
-
Load index - 104
3.
-
Speed symbol - S or T
4.
-
USA Tyre quality grading - Tread wear 160 Traction A temperature B
5.
-
Tread wear indicators moulded into tread pattern are located at intervals around the tire and marked
by a code - E66 103S6
6.
-
Tyres with 'Mud Snow' type tread pattern are marked - M and S
7.
-
Tyre reinforcing mark - Reinforced
8.
-
USA Load and pressure specification - (900Kg(1984LBS) at 340KA (50PSI) MACS PRESS
9.
-
Tyre size - 205 16 or 235/70 R16
10.
-
Type of tire - TUBELESS
11.
-
Country of manufacture - MADE IN GREAT BRITAIN
12.
-
USA Compliance symbol and identification - DOT AB7C DOFF 267
13.
-
European type approval identification - E11 01234
14.
-
Tire construction - SIDE WALL 2 PLIES RAYON. TREAD 2 RAYON 2 STEEL
15.
-
Manufacturers brand name/type - TRACTION PLUS mzx M
GENERAL INFORMATION
WARNING: This is a multi-purpose vehicle with wheels and tires designed for both on and off road usage. Only use
wheels and tires specified for use on the vehicle.
The vehicle is equipped with tubeless 'S','T' or 'H' rated radial ply tires as standard equipment. The tires are of
European metric size and must not be confused with the "P" size metric tires available in North America.
Vehicle wheel sets, including spare wheel, must be fitted with the same make and type of tire to the correct
specification and tread pattern. Under no circumstances must cross-ply or bias-belted tires be used.
WARNING: DO NOT fit an inner tube to an alloy wheel.
For tire specification and pressures.
For additional information, refer to:
Specifications
(204-04 Wheels and Tires, Specifications).
Steel wheels
Tubeless tires are mounted on 5.5 or 6.5 inch wide by 16 inch diameter steel wheels.
Alloy Wheels
Tubeless tires are mounted on 7.0 inch wide by 16 inch diameter cast aluminium alloy wheels. The surface has a paint
finish covered with a clear polyurethane lacquer. Care must be taken when handling the wheel to avoid scratching or
chipping the finish. The alloy wheel rim is of the asymmetric hump type incorporating a safety hump to improve location
of the tire bead in its seat. If difficulty is experienced in fitting tires to this type of rim. See
For additional information, refer to:
Wheel and Tire
(204-04 Wheels and Tires, Removal and Installation).
TIRE INSPECTION
Inspect tires at weekly intervals to obtain maximum tire life and performance and to ensure compliance with legal
requirements. Check for signs of incorrect inflation and uneven wear, which may indicate a need for balancing or front
wheel alignment, if the tires have abnormal or uneven wear patterns. See Tire Wear Chart in this section.
Check tires at least weekly for cuts, abrasions, bulges and for objects embedded in the tread. More frequent inspections
are recommended when the vehicle is regularly used in off road conditions.
To assist tire inspection, tread wear indicators are moulded into the bottom of the tread grooves, as shown in the
illustration above.
When the tread has worn to a depth of 1.6 mm the indicators appear at the surface as bars which connect the tread
pattern across the width of the tread as shown in the illustration above.
• NOTE: DO NOT attempt to interchange tires, e.g. from front to rear, as tire wear produces characteristic patterns
depending on their position. If tire position is changed after wear has occurred, the performance of the tire will be
adversely affected.
• NOTE: Territorial vehicle regulations governing tire wear MUST be adhered to.
When the indicators appear in two or more adjacent grooves, at three locations around the tire, a new tire must be
fitted.
Wheel inspection
Regularly check the condition of the wheels. Replace any wheel that is bent, cracked, dented or has excessive runout.
Valve inspection
Check condition of inflation valve. Replace any valve that is worn, cracked, loose, or leaking air.
Tire pressures
Maximum tire life and performance will be obtained only if tires are maintained at the correct pressures .
Tyre pressures must be checked at least once a week and preferably daily, if the vehicle is used off road.
The tire inflation pressure is calculated to give the vehicle satisfactory ride and steering characteristics without
compromising tire tread life. For recommended tire pressures in all conditions.
For additional information, refer to:
Specifications
(204-04 Wheels and Tires, Specifications).
Always check tire inflation pressures using an accurate gauge and inflate tires to the recommended pressures only .
Check and adjust tire pressures ONLY when the tires are cold, vehicle parked for three hours or more, or driven for less
than 3.2 km (2 miles) at speeds below 64 km/h (40 mph). Do not reduce inflation pressures if the tires are hot or the
vehicle has been driven for more than 3.2 km (2 miles) at speeds over 64 km/h (40 mph), as pressures can increase by
0.41 bars (6 lb/in!) over cold inflation pressures.
Check ALL tire pressures including the spare. Refit the valve caps as they form a positive seal and keep dust out of the
valve.
WHEEL BALANCING
CAUTION: It is essential that all wheel balancing is carried out off the vehicle. The use of on the vehicle balancing
could cause component damage or personal injury and MUST NOT be attempted.
• NOTE: Before attempting to balance a wheel and tire assembly clean all mud and dirt deposits from both inside and
outside rims and remove existing balance weights.
Remove stones from the tire tread in order to avoid operator injury during dynamic balancing and to obtain the correct
balance.
Inspect tires for damage and correct tire pressures and balance according to the equipment manufacturer's instructions.
Steel wheels
Clean area of wheel rim and attach balance weights in position shown.
Alloy wheels
Clean area of wheel rim and attach adhesive balance weights in position shown. Cut through rear face of weight strip to
detach required weights.
CAUTION: Use only correct adhesive balance weights to avoid damage to aluminium wheel rim. DO NOT attempt
to use a steel wheel weight on an aluminium wheel.
Static Balance
Wheel tramp
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