What were they originally made for? I have 15" Type H's on my e28 without hubcentric rings.
I picked up a pair of borbet type H rims, and I know I need to run hubcentric rings with them. Tirerack only sells rings for rims that they sell, and Borbet is not on the list. I have found other sites that sell rings of various sizes - how do I know which size ring I need for my 525? The rims are 15 inch.
What were they originally made for? I have 15" Type H's on my e28 without hubcentric rings.
1989 11/88, M30B35 175k-miles 535iM
1988 04/87, M20B27 153k-miles 528e
1987 01/87, M30B34 126k-miles L6
Washington D.C
I believe BMW's, outside of the e39 and z3, have a 72.6mm hub. The e39 has a 74.1mm hub. Measure the inside of the wheel, where it fits onto a hub.
http://www.lakeshorewheelandtire.com...category&id=34
That site has some rings with measurements too.
1989 11/88, M30B35 175k-miles 535iM
1988 04/87, M20B27 153k-miles 528e
1987 01/87, M30B34 126k-miles L6
Washington D.C
I think many aftermarket wheels designed after the intro of the E39 have the larger 74mm hub bore making them usable on all the others with hub rings.
I think it a safe bet to order the 72/74 rings if you need them at all.
"The gas pedal wouldn't go to the floor if it weren't meant to be there"