Triumph TR6 PI Operation Manual page 380

WHEELS AND TYRES
Damage
WHEELS AND TYRE BALANCE
74.15.00
Excessive localised distortion such as is sometimes caused
by severe contact with kerbs or stones can cause the tyre
casing to fracture and may lead to premature tyre failure.
Tyres should be periodically examined for cracks and cuts,
exposed cords etc., and all imbeded objects such as stones
and glass, removed from the treads. Oil or grease on the
rubber should not be allowed to remain but should be
removed by the sparing use of fuel. Do not use kerosene
which has a detrimental affect on rubber.
Heat
The balancing of wheel and tyre assemblies is
necessary to eliminate the undesirable and unpleasant
effects of vibration which can be induced by the rotation of
out-of-balance forces.
Balancing is advised when a tyre is renewed or if a
tyre is removed for repair and refitted.
It is recommended that the servicing and
reconditioning of wire wheels is entr.usted only to those
who are equipped to fulfil this specialist function. It is
pointed out that the renewal of a single spoke may
necessitate extensive readjustment to spoke tension
throughout the wheel.
The average spoke torque in both rows should not be
less than 60 lbf/in (0.69 kgf/m). With spokes fully
tightened the nipples must not be at the extremities of the
fitted flush with the nipple. **P.V.C. tape may be
wrapped round the wheel over the nipple heads to give
added protection for the tyre inner tube.
**
Continued
When paint respraying is carried out and the car is
subjected to a drying or baking oven it is recommended
that the wheels be removed or at least that the weight of
the car is relieved from the tyres.
Repairs - Tyres
A temporary repair can be made to tubeless tyres
using a special kit, provided that the puncturing hole is
small and is confmed to the central tread area. The
. following precautions must be observed:
1. Use only one plug in each hole.
2. Following a temporary repair do not use the car at
high speeds.
3.
Remove the tyres from the wheel and make an
internal, proper repair at the earliest opportunity.
Repairs - Tubes
A vulcanised repair must be made.
WHEELS
Wire Wheels
74.20.00
Winter tyres
Winter tyres are designed to provide improved
traction and braking in mud and snow. Their performance
on hard surfaces may, however, be inferior to normal road
tyres and extra care is therefore required when using them
under normal conditions. The tyre manufacturers
recommendations regarding speed restrictions must be
observed.
Racing and competition tyres
Should the vehicle be tuned to increase its maximum
speed or be used for racing or competition work, consult
the respective tyre company regarding the need for and use
of tyres of special, or racing construction. Racing tyres are
not recommended for normal road use.
Valves
When a new tubeless tyre is fitted the snap-in type
valve housing should also be renewed. To facilitate fitting,
lubricate the valve housing with a soap solution and use a
special
to~l
to enter the housing squarely into an airtight
position in the wheel rim.
74.10.00 Sheet 2
74.20.00 Sheet 1
Triumph TR6 Manual. Pan No. 545277 Issue 2