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Old 01-30-2013, 06:02 PM   #1515
Scooby Newbie
Member#: 195573
Join Date: Nov 2008
Location: SSF, CA
2012 WRX


Originally Posted by Mach V Dan View Post

Mach V
Originally Posted by Mach V Dan View Post
Conti DWS, 275/35R18.

Swift springs.


Mach V
Thanks to Dan's post on his Rota D-Force thread, I now have a(nother?) very useful data point as far as fitting Conti DWS tires (which I happen to currently run year-round).

- 275mm at +40 offset clears on swift springs and rolled rear fenders. (97.5mm of tire after the hub)
- Swift springs for 08+ STi's are 252 lbs/in front and 235 lbs/in rear and drops 0.8"
- In comparison, RCE "regular guy" black springs are a little stiffer at 275 front 250 rear, (275/250) are slightly stiffer than swifts (252/235), so that makes things slightly even better
- Since I want to run "only" 255/35/18 or 255/40/17 of the same tire, I can in theory go with an offset as low as +30.5 and still be ok. Though I think I'll stick to +35 to +42
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