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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > 225/45/18 and 255/40/18 on 335xi E90



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      04-08-2008, 09:28 AM   #1
NJ335xi
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225/45/18 and 255/40/18 on 335xi E90

I decided to keep my rims and sell my run flats.

I purchased Goodyear Eagle F1 All Seasons tires. I bump the profile up 5 to 225/45/18 front and 255/40/18 rear. More tire between the rims and the road. The profile is higher by 1/2" or a full inch in diameter front and back.

The tire tread is a full inch wider because these tires are a little more square.

They ride great, no issues. I have seen only a slight (3%) mile per hour difference from Speedo to actual.

Here are the stats on the F1s compared to the OEM. They are better all around and last 3 times longer.

Tire______Tread Wear ___Traction____Asphalt Gs ___Concrete Gs
F1_________400__________AA__________0.54_______0.4 1
BS RF______140___________A__________ 0.47_______0.35

HR springs are next!

What do you think?
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      04-08-2008, 12:38 PM   #2
Rt66er
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Considering the speedo is off about 5% from the factory, your speedo will actually be more accurate now! I have considered doing this just to counteract a most of the built-in speedo error.
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      04-08-2008, 05:50 PM   #3
TofuTurkey
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I hope the front won't rub when you drop it...
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      07-07-2010, 04:31 AM   #4
adamalexxx
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Your post is very helpful me I have the same car BMW E92 193 rims tire package I run flat and I want to make the same change - Non Run Flat tires 225 45 r 18 91w or y -255 40 R18 95W or y ! You think we bonding problem? Thank you
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