Quote:
Originally Posted by XenaBimmer
I've looked into it more, and believe I'll go with the 8.5" width all around w/ +35 offset. I think the 9.5" in the rear w/ that offset may be an issue w/ rubbing
For 20" tires w/ 8.5" width, I'm looking at 245/40-20 to keep the overal tire diameter as close to factory as possible so the speedo will not be thrown off
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You can play with various wheel and tire sizes/offsets here:
http://www.venommotorsports.com/libr...calculator.asp
I prefer the more aggressive look of wider tires, and wheels should also move out closer to the fenders. This improves what we(euro tuners) call "stance". A fat wheel and tire should sit as close as possible to the fenders.
This is what I got playing with sizes for the TSW Nurburgrings I am considering. I believe with a Tire & Wheel Outboard increase (inches): Front 0.958 and Rear 0.261, there should be no rubbing. The speedo should also not be thrown off.
Stock Sport
F 8.5x19 245/45/19 38
R 9.5x19 275/40/19 48
vs.
TSW Nurburgring
F 9.0x20 275/35/20 35
R 9.0x20 275/35/20 35
Front
Ride height difference (inches):-0.05
Wheel Inboard increase (inches):0.131
Wheel Outboard increase (inches):0.368
Tire & Wheel Inboard increase (inches):0.721
Tire & Wheel Outboard increase (inches):0.958
Rear
Ride height difference (inches):-0.04
Wheel Inboard increase (inches):-0.761
Wheel Outboard increase (inches):0.261
Tire & Wheel Inboard increase (inches):-0.761
Tire & Wheel Outboard increase (inches):0.261
Of course "stance" is a personal preference. I also am not an engineer, but there are minimal aftermarket installs on this forum so I decided to research a bit myself. I look forward to any input good or bad. This is what stance looks like on a e92. The wheels and tires are almost flush with the fenders.
http://www.e90post.com/forums/showthread.php?t=424758
Of course there are more extreme drops and wheels sitting flush, but those are show cars and take away in performance.