Largest Wheel/Tire Sizes with Stock BMW 330 ZHP Suspension?

I'm reviving this old thread.

I was running a set of 255/35/18's in the rear but those were shredded so I went with 255/40/18 in the rear and now I'm rubbing a little more than I expected but nothing too major. The only reason I went with the 255/40/18 is because thats what came on my car when I bought it. Then I switched to the 255/35's so I figured going back to 255/40 wouldn't be an issue. The fronts are 235/40/18 with 18x8.5 et34 BBS CK's on all 4 corners.

I planned on rolling my fenders anyways so I could lower the car a little more so now I'm curious if running a 255/40 in the rear will be an issue. I'm also curious if running these tires will throw off my speedo at all.

Thanks in advance!

Surprisingly I have not replied to this...

stock staggered

245/40 front
264/35 rear

I think that difference doesn't match size though does it JP? The fronts will be larger than the rears in diameter.


I ran 235/265 combo on mine and it was pretty full.

IIRC it's a 1.6% difference biased to the front, my thinking was that the slightly extra sidewall will help make the ride a little softer. I'll eventually put the 17" style 68s I have on so there is more cushion, I just haven't had time to get around to it. Also, I drive the E21 most of the time so it's not a huge priority for me to change them at the moment

17x8.5 ET40
265/40/17 Dunlop Z1 star spec
Square


Attachment 16456



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any spacers, wyatt? i have been contemplating those wheels, with 255/40/17's.

peter

Quote:

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Originally Posted by slater

any spacers, wyatt? i have been contemplating those wheels, with 255/40/17's.

peter

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Peter, no spacers.

I'll be running 255/40/17 RS3's next.


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The wheels in my sig are running 19x10 ET41 with 265/30/19 rear, 19x8 ET35 with 235/35/19 front. Needed pretty major rolling to make clearance in the rear.

Can I run a 255/35R19 on a 19x8.5 ET43 square set, or would it make sense to drop it down to 255/30R19, or to a 245 wide tire?

EDIT: Stock ZHP suspension, maybe coilovers at some point. Not afraid of getting into some fender rolling or adding spacers if I have to.

Looking at buying a set of rims from 2011 535i 18x8 et 30 will these fit with out issue on my ZHP stock suspension.

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