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      02-02-2014, 11:39 AM   #1
08z4mroadster
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Will 285/35/18 tyre fit stock OEM rear Z4M wheel?

Does any know will 285/35/18 tyre fit Z4M stock rear wheel?

Many thanks
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      02-02-2014, 12:25 PM   #2
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Most of the major brands I checked require a 9.5" or wider wheel to fit 285/35/R18 sized tires.

Will it fit? Maybe. Is it smart to do so? That's a resounding NO. Those sidewalks will be pinched in too far for the tire to be effective, and may actually generate excessive heat and cause them to fail prematurely.
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      02-02-2014, 01:27 PM   #3
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It might fit, but it would probably bulge a LOT. I have 275/35/18's on my stock rear wheels and I wouldn't go any wider.
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      02-02-2014, 02:12 PM   #4
08z4mroadster
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Thanks all, think I go for 265 rear now. But the problem they r running 94Y would that be fine??? As the vehicle index suggest for 95 at least.
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      02-02-2014, 02:13 PM   #5
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Quote:
Originally Posted by The HACK View Post
Most of the major brands I checked require a 9.5" or wider wheel to fit 285/35/R18 sized tires.

Will it fit? Maybe. Is it smart to do so? That's a resounding NO. Those sidewalks will be pinched in too far for the tire to be effective, and may actually generate excessive heat and cause them to fail prematurely.
+1

Counterproductive, as is running a 275, for most tire types, on the stock rear wheel. Contact patch is compromised. Confirmed via pyrometer readings--load is on the middle of the tire and doesn't use much of the inside/outside. Recommend using "measured" rim as the guide for width, not min allowable.

A 265/35 rear on the stock wheel will outperform a 275 in terms of available rubber on the road for most street tires. In fact, some 265s have wider specs than 275s.
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      02-03-2014, 01:09 PM   #6
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I ran 285/35/18 on 18x10 et25 arc-8's, too meaty of a sidewall for my liking




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      02-03-2014, 01:42 PM   #7
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That's a super good picture to reference. Was curious about fitting 285s on a new set of wheels but wasn't positive it would make it with out serious camber. I like your newer set ups now Platinum Child.
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      02-06-2014, 05:29 AM   #8
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How about 285/30/18 on 10 inch width?
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      03-01-2014, 08:05 PM   #9
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Quote:
Originally Posted by asirvr4
How about 285/30/18 on 10 inch width?
Works great , that's my track set up 265/285 .
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      03-03-2014, 12:03 PM   #10
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These 285 set ups are sitting on stock suspension? Or is some camber involved here?
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      03-03-2014, 08:44 PM   #11
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Quote:
Originally Posted by Skiddish
These 285 set ups are sitting on stock suspension? Or is some camber involved here?
I am on KW V3's -2.2 camber .
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      03-04-2014, 12:36 PM   #12
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That's what I thought and I was just making sure that the "stock" part of this was referring directly to the rim and not the rest of the vehicle. Thanks GMD
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      03-04-2014, 01:38 PM   #13
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Quote:
Originally Posted by Platinum Child View Post
I ran 285/35/18 on 18x10 et25 arc-8's, too meaty of a sidewall for my liking




hmmm. I kinda like all that tire. I might have to go a bit wider next time.

Thanks for pics.
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