Are the lug nuts like on a Volkswagen (the whole bolt comes off)? Mounting the wheel centered on the hub is important on European cars where the wheel bolts come off and you cannot put the wheel back on the bolts like you would do on a japanese or american car, because on European cars it's the hub that centers the wheel, on jap/am the bolts will center your wheel, the hub is like an insurance if you will... It will be important to have the wheel centered on the hub (on jap/am) on offroad rigs or cars that are driven in harsh conditions (where you could snap the bolts off from an impact).

From my experience, that's my 2 cents...