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Old 01-30-2013, 02:29 PM
upallnight upallnight is offline
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Location: Crook County
 
Join Date: Nov 2012
Posts: 520
Mein Auto: BMW, Lotus, Porsche
A 1998 540i is a BMW E39. For that year for some reason only known to BMW they decided to install larger hubs on the E39 series cars that were larger than previous years car. If the wheels on A BMW was center by the lug nuts (BMW uses lug bolts) instead of the center hub you wouldn't have to use hubcentric rings. If you can find aluminum hub rings I would go with aluminum instead of plastic. But to eliminate the problem I would just go back with the original rims for the X or get a set of rims that doesn't require the hub rings.
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