Tire tread pattern with symmetrical , asymmetrical patterns and single- oriented patterns , we can clearly ? Is not seen a bit dazzled ? If you can not tell , is a normal thing. Some time ago , Xiao Bian to participate in a regional post new tires , representatives of the local dealer single oriented patterns characteristic of said tire became asymmetric .
Symmetrical pattern , by definition is the center tread grooves prevail on both sides of the same or similar tread . Overall , there are three cases, the first one is folded in the middle , both sides can be completely overlap ; second must be rotated 180 degrees to the other side before completely overlap , because both sides of the patterns are the same, but the location may vary. The third is substantially the same as the left and right , is also considered a symmetrical pattern .
According to special margin  fan clutch  aware, automatic car driving in the city , regardless of speed must be timely resumption of oil . Especially in traffic jams , lights littered the road , if the car was very close to former oil revenues brakes, brake pads wear and tear will be very serious , and very expensive oil .

Therefore, automatic car to see the red light or in front of congestion ahead when oil revenues , not only fuel efficient, saving maintenance costs , but also increase driving comfort .

Autumn temperatures are relatively low, easy to harden rubber brittle, easily lead to a flat tire , so to add pressure, in order to keep within the specified pressure range .

Should also regularly check the tire for scratches , clean up debris within the tread .

It stands to reason , symmetrical pattern of the tire four wheels mounted arbitrary , without fear around, and inside and out, but it is recommended to install small series production date marked on that side of the tire mounted on the outside. Why ? Because tires are guaranteed and are generally tire shelf life is 4-5 years. But careful, well maintained owners , even if the tires have a shelf life , the tire is still as good as new , slightly damaged . Is not the case there is no need to change the tire ? The answer is no.

Tires have a shelf life , it must be replaced for safety sake it. The date of manufacture marked on the outside of that side-mounted , as is easy to observe the owners of the production date of the tire to be replaced.
For traveling 20,000 kilometers of vehicles, vehicle maintenance more content, in addition to regular maintenance of the contents of each , but also check the following: oil leak check the whole car , engine running noise, belt tightness the performance of the brake pedal and the booster , brake disc thickness , hand brake performance , the car doors and windows performance , exhaust pipes and chassis parts loose, finally do what tire rotation .

According to special margin  fan clutch  is understood that many people want to change when an oil change better fully synthetic motor oil, synthetic oil has good oxidation stability , higher viscosity index, better low-temperature lubrication, high temperature stability stable. For the car , that was more conducive to fully synthetic engine oil lubrication protection . However, this oil generally more expensive, so owners can use the same label with the original synthetic motor oil can extend drain intervals and save fuel.