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      04-20-2010, 04:25 PM   #1
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Tires

I have done the search and everything is for 19's only. What is the widest tire on the stock OEM 18's I can go for the front and rear? Are the factory sizes the best? I figure BMW did numerous test for the sizes they pick. I though wouldn't mind going wider for aesthetic and performance purposes if it doesn't have any negative traits.

255/40-18 -front
275/35/18 rears

Thats what I am thinking. Does it sound right? Thanks for the help.
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      04-20-2010, 04:56 PM   #2
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Based on the official wheel width specs with the only difference between a 19 and 18 is the diameter, you should be able to use 255/275 just fine.

18" style 260
Front 8,5J ET:29
Rear 9,5J ET:23

19" Style 220
Front 8,5J ET:29
Rear 9,5J ET:23
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      04-20-2010, 04:57 PM   #3
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exactly.. i was thinking of doing the same thing with a set of OE 18's

255 front and 275 rear.

you can see the PS2 in 245 and 265 are a little rounded on the sidewalls so you could prob fit a bigger tire.
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      04-20-2010, 05:45 PM   #4
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I can confirm that 255/35 and 275/35 fit. I am running those sizes in Toyo R888's for track and autocross.
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      04-20-2010, 06:15 PM   #5
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Thanks so much guys, exactly the info I needed. 255/35 + 275/35 it is.

Any change in ride quality?
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