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Tyre Wear
All tyres should wear in a smooth, even wear pattern when the tyres are maintained with the correct air pressure for the load on the tyre. If tyres begin to show an irregular wear pattern, and the vehicle alignment is correct, sometimes just rotating the tyres by changing direction of rotation and wheel position will allow the tyres to wear evenly.
Toe Wear
A feathered wear pattern on the front tyres typically indicates misalignment (toe in or out). Sometimes a radial tyre will not have this wear pattern unless the toe condition is severe. Instead of the feathered edge wear, the tyre will be worn on the inside or outside shoulder which could be confused with camber wear. A skewed rear axle could show feathered edge wear on one shoulder of one front tyre and feathered edge on the opposite shoulder of the other front tyre. In order to correctly diagnose a tyre wear condition, the motorhome should have the alignment checked on all four wheel positions before any corrections to alignment are made.
Camber Wear
Also known as edge wear, camber wear shows up on the inside or outside shoulders of the tread. Wear on the inside edge of both tyres may be due to negative camber or toe-out, a misalignment. If only one tyre shows edge wear, check for worn kingpin bushings, bent or worn steering components, or excessive positive camber setting.