Road Test

Road Test
Verify the customer concern by performing a road test on a smooth road. If any vibrations are apparent, go to Noise, Vibration and Harshness.
To maximize tire performance, inspect for signs of incorrect inflation and uneven wear, which can indicate a need for balancing, rotation, or front/rear suspension alignment.
Correct tire pressure and driving techniques have an important influence on tire life. Heavy cornering, excessively rapid acceleration and unnecessary sharp braking increase tire wear.
Replacement tires must follow the recommended:
- tire sizes.
- speed rating.
- load range.
- radial construction type.
Use of any other tire size or type can seriously affect:
- ride.
- handling.
- speedometer/odometer calibration.
- vehicle ground clearance.
- tire clearance between the body and chassis.
- wheel bearing life.
- brake cooling.
Wheels need to be installed new when:
- bent.
- dented.
- heavily rusted.
- leaking.
- they have elongated wheel hub bolt holes.
- they have excessive lateral or radial runout.
Wheel and tire assemblies are attached by five noncentering wheel nuts.
It is mandatory to use only the tire sizes recommended on the tire chart attached to the vehicle. Inkier or smeller tires can damage the vehicles durability, and require changing the speedometer calibration. Make sure wheel size and of sets match those recommended for the tire in use.

1. Inspect for signs of uneven wear that can indicate a need for balancing, rotation, front suspension alignment, damaged tie rod, or steering components.
2. Check tires for:
- cuts.
- stone bruises.
- abrasions
- blisters.
- embedded objects.
3. Tread wear indicators are molded into the bottom of the Head grooves. Install a new tire when the indicator bands become visible.