Originally Posted by Nucking Futs!
I'm trying to retain the oem overall (rear) tire diameter of 26.3" so the speedo is accurate. With that in mind, the 285/35 would have an OD of 26.9" & the 295/30 will have an OD of 26.0". Both of which IMO are no bueno but that's just me.
On my old e46 M3, I had the same size rear wheels (19x10.5) & tires (275-series width). It looked a tad (but not by much) stretched but it didn't look weird/ghetto at all thus I'm sticking to that this time as well.
Sounds good. Please post some pics of those dummy tires mounted if possible since that's the exact rear tire size I'll probably go with. I was thinking about going w/H&R springs too but I want more adjustibility when I get on the track so I'm leaning towards the KW v3's. The only problem is that they're boo-coo $$$.
Don't know where you get those diameters. The 19" wheel diameter alone is 24.13 cm and a 285/30 would give you an additional 8.55 cm for a total of 32.68cm. Stock would be 0.73cm higher. Plus I think the speedo is measured in the front tires.