24-06-2014, 01:04 PM
The pikey method can end up with crabbing or steering wheel out of alignment, better off using a plumbline each side - set it equidistant from front and rear wheel centres, then measure front and rear edges of the rim to that. Don't measure from the tyre as different tyres will sit differently on the rim and any slight run out or bulge will give you skewed readings.