225/45/18 and 255/40/18 on 335xi E90 - BMW 3-Series (E90 E92) Forum

NJ335xi · 04-08-2008, 08:28 AM

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?

Rt66er · 04-08-2008, 11:38 AM

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.

TofuTurkey · 04-08-2008, 04:50 PM

I hope the front won't rub when you drop it...

adamalexxx · 07-07-2010, 03:31 AM

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

04-08-2008, 08:28 AM	#1
NJ335xi Enlisted Member Drives: 335xi Join Date: Jan 2008 Location: NJ Posts: 41 iTrader: (0)	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? Attached Images __________________ 2008 335xi Sedan, Sport, Premium IPod, Winter Pack, M-Tech Spoiler, V1
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04-08-2008, 11:38 AM	#2
Rt66er Private First Class Drives: 335i Coupe Join Date: Apr 2007 Location: Arcadia, Oklahoma Posts: 111 iTrader: (0)	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. __________________ 335i Coupe ~ Space Gray ~ Black 'ette ~ ZSP ~ Step w/paddles ~ Gray Poplar trim

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04-08-2008, 04:50 PM	#3
TofuTurkey Gobble gobbledygook Drives: 08 335xi Coupe Join Date: Dec 2007 Location: North Jersey Posts: 287 iTrader: (0)	I hope the front won't rub when you drop it...

07-07-2010, 03:31 AM	#4
adamalexxx New Member Drives: E92 320D Join Date: Jun 2010 Location: Romania Posts: 27 iTrader: (0)	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