Originally Posted by
Sekine
Put your magnet exactly opposite the valve stem, that would 'balance' the weight.
Not necessarily. The heavy side of most rims is where the joint is, usually directly opposite the valve stem. spin the wheel slowly and see where it stops. On my road wheels I put the magnet close to the valve stem for better balance. On my deep profile aero rims the valve stem is 60mm and is the heavy side so the magnet does go on the opposite side.
Al