-The number and size of the blocks, sipes, and grooves
on a tire's tread determines how much rubber contacts
the road, how much water can be displaced,
and how quiet the tire will be during travel.
-To maximize tire performance, inspect for signs of
improper inflation and uneven wea4 which can indicate
a need for balancing, rotation, or alignment.
Tires should also be checked frequently for cuts,
bruises, abrasions, and blisters, and for stones or
other objects that might have become imbedded in
the tread.
-A properly inflated tire gives the best tire life, riding
comfort, handling stability, and even gas mileage during
normal driving conditions.
-To equalize tire wear. most car and tire manufacturers
recommend that the tires be rotated. It must be
remembered that front and rear tires perform different
jobs and can wear differently, depending on driving
habits and the type of vehicle.
-Most tires used today have built-in tread wear
tors to show when tires need replacement.
-There are three popular methods of tire repair:
type plug, cold patch repai4 and hot patch repair.
-There are two types of wheel balancing: static
and dynamic balance.
-The bearings on an axle that drives the wheels
called axle bearings. Wheel bearings are used on
driving axles. Axle bearings are typically
with the drive axle. Wheel bearings require periodic
maintenance service and are often serviced with
pension and brake work.
-Bad axle and wheel bearings will cause handling
tire wear problems.
-The front wheel hubs on ball or tapered roller bearings are lubricated by wheel bearing grease.
-Rear wheels are bolted to integral or detachable hubs.