Chery QQ Service Manual Chassis System
8、Rim sections and tires non-circularity
（1）Lift the car and support it securely;
（2）Place the probe of the dial gauge on the rim
section and measure the extent of non-circularity for
each turning of a circle.
Limit for non-circularity: Unit mm
- 61 -
Inspection on the tire non-circularity
Longitudinal 1.5(0.06)
Sideways 2.5(0.10) steel rim section
2.0(0.08) aluminum rim section
（3）Replace the tire if necessary
9、Readjustments of tire positions
In order to extend the operational life of tires and to
determine the tears and wears of the tires, readjustments
of tire positions should be carried out for every 6,000km
(3,750 miles) of driving.
As shown in the Figure:
Readjustment of tire positions
Attention:
* Best-quality tires must be used for the front wheels;
* After readjustments of tire positions, make sure that the air pressures for the tires are
adjusted to the specified air pressure values.
10、Adjustment of tire balance
After the tires are filled with air, fix the protective
capsfor the air valve nozzles tightly and then make the
testson dynamic balance. Place the balance blocks with
appropriate weights on the inner and outer edges of the
rims as required. According to the specifications, the
imbalance of the final assembly should be no larger than
100g/cm, which is approximately equal to the 5g balance
blocks on the inner and outer edges of the rims. It should
be noted that at most one balancing block is allowed to be
placed on each side of each wheel, with the maximum mass no larger than 70g. During the
process of assembling, excessively heavy shocks should be avoided to the balancing
blocks. In the case that excessive shocks are felt, the balancing blocks should be replaced
in time. The balance blocks taken down in the replacement should not be used again.
Chery Automobile Co., Ltd
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