TYRE SHOULDER

A tyre retreading process in which new rubber is apphed as tread, on the tyre shoulders and on the tyre sidewalls. 

Irregular wear is said to be initially attributable to tyre design, service use, maintenance and the state of the vehicle on which they are used. Rapid irregular shoulder wear is caused primarily by excessive low contact pressure in the shoulder area. River wear or tramlining is caused by high compression which forces the rib edges to spread and abrade on the road. These defects are examined along with the effects of poor tyre and vehicle maintenance. USA... 

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