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Selection of Tires:
1. Choice of tires must be consistent with relevant state regulations. For different vehicles, the
general choice is that of the factory recommendation.
2. In accordance with conditions of use (vehicles, loading, road, traffic and tire position),
choose the appropriate types of tires (including the specification, the pattern rate and
speed
level etc.).
3. Because different patterns have different characteristics and applications, it is based on
the
actual situation in the form of the appropriate choice of patterns.
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The use of tire management:
Besides the process of manufacturing, the proper application and management of the tire are
also the important factors to prolong the tire life. In order to achieve security (to reduce tire
failure) and economy (to extend tire life), proper application and reasonable management are
that can not be ignored.
1. Tire pressure
(1). Lack of internal pressure
a. Abnormally deformation due to too much flex results in elevated internal temperature of the
tire and reducing the strength and the adhesion force of matrix materials, which will cause
the separation among tread and shoulder or evenblasting.
b. Too much flex easily leads to cracking (mainly on the junction between tread and sidewall),
at the same time too much flex easily also results in fatigue fracture cord.
c. Abnormally deformation causes the friction increasing between the flange and bead parts,
and the damage on bead.
d. Big deformation makes the tires have a lower standing wave of critical speed and easily
generate heat, resulting in early damage.
e. lower pressure than the regular value makes the tire abnormal wear (for example,
shoulder
wearness) to impact the tire life.
f. Low pressure causes the loss of tire rotation to increase the time lag and the waste of
energy.
g. Reduce the available retreading times.
(2). The impact of high pressure
a. too large surface tension easily tears off the tread rubber and causes tread groove
cracking.
b. excess cord tension decreases force performance, which is easily affected by the impact of
blast damage and injury.
c. Increased bead stress easily causes bead steel burst fracture.
d. The prominence in the middle of tread increases the load per unit area, resulting in
abnormal wear (cap wear).
e. Less elastic medium performance impacts comfort of vehicles.
(3). the standard pressure
a. The inflating pressure must be consistent with national standards of different types of
specifications developed by the tire air pressure to inflate accordingly.
b. Various vehicle tires may be inflated based on recommended air pressure in front and rear
positions by the manufacturers of automobiles or tires.
c.The new tire size will change after a period of usage. (Expansion), the corresponding
internal
pressure will also decrease. Therefore the pressure should be checked before
operating,
after 2000 to 3000 kilometers running, it must be checked and compared to the
standard
pressure.
d. Double tires in the same axis should have the same tire pressure.
e. In high speed running, the internal pressure should be around 10% more.
f. The tire pressure will increase due to movement and heat, once cooled it will immediately
return to normal. Therefore, when the pressure goes higher (tires fever), it can not be
deflated.
g. tire pressure measurements should be carried out at atmospheric temperature.
h. Since the tires have a gas leak rate, check gas leakage at 3 months or so to reach a
relative
balance. The regular inspections will be carried out for each tire. Soap water
should be
applied to test whether the valves are leaking after every inflating, and tighten the
valve covers.
j. Spare tire should be available at any time to maintain the state.
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