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      12-16-2012, 10:37 PM   #31
RPM90
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Drives: 340i M-sport AT
Join Date: Mar 2006
Location: Chicago

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Quote:
Originally Posted by utenigma View Post
You could put a 245 on the stock 8" rim, but that's right at the limit - it might look a little rounded off, but not a lot more than the stock 255 on 8.5" rims in the back on a stock staggered setup (2.7 mm more "pinched")

I've got the stock 18" sport square rims (style 397 8" front and back) - maybe I'll just try shoeing them with 245/40 non-run-flat rubber and see how that goes

Might buy you some rim protection from scuffing as well
I went with 235/45/18 on the front, stock 255/40/18 on the rear.
Works great.
Could have done 235/40, which would have been .3" less diameter over stock.
235/45 is .3" larger than stock.
Not much difference either way. I figured the slightly taller sidewall would be beneficial if I hit a pothole.
Since I'm going with AS tires I decided not to any wider on the front.
245/40 all around sounds like a good option too, especially for people not driving in all season areas.

I like the steering feel with these Conti DWS tires. Seems to be a touch more "road feel". Also, I upped the psi front and rear by 6psi as the DWS have a bit less initial steering. With the upped psi it feels about the same as the OEM S001's at stock pressure. Ride quality is excellent and bump absorbtion is a good bit better than the RFT's.
I had these on my 135i with the higher pressures too. I'm loving these tires and the extra width on the front feels very good.
Plus these tires remove over 20lbs of unsprung weight compared to the RFT's.

Last edited by RPM90; 12-16-2012 at 10:43 PM..
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