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[GreatWhite]

#1
Wheel
18 x 9.5 +22
18 x 10.5 +25

Tire
255/35
275/35

ZCP suspension, no spacer.

will it fit with no rub??

#2
Nitto INVO or Potenza RE-11??

Thank you.

[slicer]

The tire sizes you listed are correct for 19" wheels but not ideal for your 18" wheels. Here is what I would suggest:

Front:
275/35/18 or 265/35/18 (you could also do 255/40/18 but that would be more stretched and you might as well go wider since you have the wheel width to support it)

Rear:
285/35/18 or 295/35/18 (you could also do 275/40/18 but I wouldn't - same reason as above)

Nitto Invo are junk IMO and not anywhere near the same performance level as the RE-11. The Nitto NT05 is more competitive with the RE-11. I would suggest Michelin PSS for street use and Hankook RS3, Nitto NT05, or BFG G-Force Rival for Street / Track use in the sizes I suggested. RE-11 is a good tire but it's not available in decent 18" sizes for the M3.

[GreatWhite]

Very informative, thank you.
Would you do 275/35 and 285/35 in PSS(does not come in 295/35) or 275/35 and 295/35 in PS2??

By going 275 in the front will there be any rub issue against fender or spring?
stock ZCP, and trying to stay away from spacer.

Originally Posted by slicer

The tire sizes you listed are correct for 19" wheels but not ideal for your 18" wheels. Here is what I would suggest:

Front:
275/35/18 or 265/35/18 (you could also do 255/40/18 but that would be more stretched and you might as well go wider since you have the wheel width to support it)

Rear:
285/35/18 or 295/35/18 (you could also do 275/40/18 but I wouldn't - same reason as above)

Nitto Invo are junk IMO and not anywhere near the same performance level as the RE-11. The Nitto NT05 is more competitive with the RE-11. I would suggest Michelin PSS for street use and Hankook RS3, Nitto NT05, or BFG G-Force Rival for Street / Track use in the sizes I suggested. RE-11 is a good tire but it's not available in decent 18" sizes for the M3.

[slicer]

Originally Posted by GreatWhite

Very informative, thank you.
Would you do 275/35 and 285/35 in PSS(does not come in 295/35) or 275/35 and 295/35 in PS2??

By going 275 in the front will there be any rub issue against fender or spring?
stock ZCP, and trying to stay away from spacer.

I would do the PSS over the PS2 considering that PSS is better and costs less. 275 in the front won't be a problem on the inside spring unless you switch to KW which will require a 3-5mm spacer. You may graze the back of the liner at full lock but if so it will be very minor (I have ran 275's on 8 sets of wheels on my car and some offsets hit the liner slightly but never enough to wear through it - only a minor scratch) You will also want a little negative camber in the front for best fitment (I pulled my alignment pins to get -1.8ish in the front when I was on Eibach springs). If all of that sounds like too much, go with 265/35/18.