What tyre sizes will fit my E90?

[joelwtk 0]

Hi all,

Currently have an E90 M-Sport with the stock style 194 wheels - 17x8J ET34 fronts and 17x8.5J ET37 rears.

Stock tyre sizes are 225/45/17 fronts and 255/40/17 rears.

Need new tyres for the rears - there's not many options for this tyre size out there, but looking at a tyre/wheel size calculator online, it says a 225/45/17 would fit my rears.

I'm new to this, so would fitting a square tyre setup on a staggered rim setup even work? Alternatively, is there a different size tyre that would fit my rears?

Cheers

Edited November 13 by joelwtk

[Vass 859]

Check out Hyperdrive, seems to be plenty of options for that size. Alternatively, you could go 245/40R17 whilst retaining much of the tyre width. I wouldn't go 225 on a RWD car, not sure if they would work on a wider rim but hey, I'm not gonna tell you off either.

[Olaf 3339]

8 hours ago, joelwtk said:

Hi all,

Currently have an E90 M-Sport with the stock style 194 wheels - 17x8J ET34 fronts and 17x8.5J ET37 rears.

Stock tyre sizes are 225/45/17 fronts and 255/40/17 rears.

Need new tyres for the rears - there's not many options for this tyre size out there, but looking at a tyre/wheel size calculator online, it says a 225/45/17 would fit my rears.

I'm new to this, so would fitting a square tyre setup on a staggered rim setup even work? Alternatively, is there a different size tyre that would fit my rears?

Cheers

You don't want 225/45R17 on the rear - it's a stretch.  On the 8.5" wide rear you want the 255/40R17 as recommended.  

Why would you not want 255/40R17?

[Olaf 3339]

FWIW I run 245/40R17 on my rears, Style 194 on e46.  it's the right circumference and fit for e46 staggered setup on Style 68.
245/40R17 probably the closest thing with a few more options than Bridgestone RE-050 runflats in 255/40R17.

Unless you're running with a spare tyre, you will want runflats again.

Another option is to get square setup rims and whatever the standard tyre size is for E9x with factory square setup.