NANO

470

WHEELS AND TYRES

MAINTENANCE AND INSPECTION OF TYRE/

WHEELASSEMBLY

(a) Visual inspection

Visually inspect the tyre and replace the same if any

of the following defects are found :

1. Bumps or bulges in the tread or the side of the

tyre.

2. Cuts, splits or cracks.

3. Excessive tread wear or non uniform tyre wear.

(b) Inflation of tyres

Check tyre pressures when tyres are cold.

Correct tyre pressure is necessary to give the best

combination of riding comfort, handling, tyre life and

better fuel efficiency.

It is normal for tyre pressure to increase when the

tyres become hot during driving. Do not bleed or

reduce tyre pressure after driving. Bleeding reduces

the “Cold Inflation Pressure”.

Recommended tyre pressures are :

Front: 28 psi / 190 kPa

Rear: 30 psi / 230 kPa

Spare: 30 psi / 230 kPa

WARNING :

Driving with uneven pressures on different sides may

reduce handling performances during certain driving

maneuvers. The balance of the vehicle is also upset

and tyre wear will be uneven.

Higher than recommended pressure (Over -

inflation) can cause :

1. Bumpy and harsh ride

2. Tyre brushing or carcass damage

3. Rapid tread wear at the center of tyre

Unequal pressure on same axle can cause :

1. Uneven braking

2. Vehicle pull

3. Reduced handling

4. Swerve on acceleration

Lower than recommended pressure (Under -

inflation) can cause :

1. Tyre squeals on turns.

2. Hard steering

3. Rapid and uneven wear on the edges of the tread

4. Tyre rim bruises and rupture

5. Tyre cord breakage

6. High tyre temperature

7. Reduced handling

8. High fuel consumption

Excessive shoulder wear can indicate under inflation

while wear to the centre of the tread can mean over

inflation.

Both - over inflation and under inflation tread wear

pattern are shown below.