[DougNBodie]

Anyone know if I can put 235/40/18 on the front and 265/35/18 on the back? Tires rack is confusing as it give conflicting info.
Stock E90 with M Sport package (sport suspension) and 193 rims 8.5 front and 9.5 back
Thanks

[dmatre]

They will fit without rubbing, as long as you don't use spacers - otherwise the rears may rub.

[Fritzer]

Originally Posted by DougNBodie

Anyone know if I can put 235/40/18 on the front and 265/35/18 on the back? Tires rack is confusing as it give conflicting info.
Stock E90 with M Sport package (sport suspension) and 193 rims 8.5 front and 9.5 back
Thanks

Generally a good rule of thumb is +/- 10mm from OEM tire sizes, on the OEM wheels. Sometimes you can push it, I wouldn't. I run those exact tire specs on Style 197 wheels, which came as M-Sport wheels. 18x8 ET34/18x8.5 ET37. Zero issues whatsoever. Use bmwstylewheels.com to lookup exact wheel specs. Then there are some good charts that I'm sure you could find online which essentially show you what the biggest tire size you can run on certain width wheels, and the corresponding aspect ratio needed.(the second number in a tire size)

The largest tire on a non-M3 E9x that I've ever seen actually fit without issues, was 285mm on a 335is. And the owner of that car had rubbing issues on high suspension compression scenarios. Biggest you could fit without rubbing would probably be 275mm. I have a picture somewhere of a light blue E92 Dinan M3 with 335mm tires on the rear that I saw at my local little cars and coffee.

t. someone who used to live and breath rubber for a living

[Fritzer]

By the way, your style 193s are the exact same specs as my 197s. (18x8 and 18x8.5) The off-setting of the wheels as well.

[DougNBodie]

Originally Posted by Fritzer

By the way, your style 193s are the exact same specs as my 197s. (18x8 and 18x8.5) The off-setting of the wheels as well.

Thank you for the information.