Yeah, there is a difference between the two pads.
Due to the location of where the spring sits in relation to the wheel (spring is further forward) changing the length of the spring will have a larger effect on the ride height than it appears. I've seen the ratio posted as 1:1.7, meaning, a 1 inch change in the spring length would be a 1.7 inch change in ride height.
Doing the conversion, it works out to 5mm spring pad = 1/3" in ride height change and a 10mm spring pad = 2/3" ride height change.
The E46 Xi models came with 15mm spring pads that can also work on our cars, they would raise the rear by about an inch.
Edit- there is also a 7.5mm spring pad, which I believe is the stock pad, that would be a 1/2" change. __________________ ~Dave~
98 328ti Morea Grun slicktop
11 128i space gray slicktop
13 JGC WK2 Deep Cherry
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Last edited by spidertri; 01-12-2011 at 06:19 PM. |