1. I've got 17" rims with Bridgestone Potenza's fitted. They are wearing on the outer shoulder of the front tyres. Other than normal cornering wear, should this really happen or is there some alignment issues?
I am extra careful with tyre pressures so I know it isnt that!
2. With regards the tyre changing, do all four have to be changed at once or can two be done without damaging the drive systems?
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