10-15-2019, 10:12 AM | #1 |
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Upgrade tires on stock Comp wheels advise needed
Featured on BIMMERPOST.com Would the following tire setup work on stock X4M Competition wheels? 265 / 40 / R21 fronts 295 / 35 / R21 rears Trying to stay within 1% difference in diameter vs stock. For reference, here are the stock wheel and tire specs: 255 / 40 / R21; 21 x 9.5 fronts 265 / 40 / R21; 21 x 10 rears I know 295 might be a little stretched for the 10" wheel but do you think it will be bearable in terms of both looks and performance? Also, want to make sure that there will be no rubbing issues with increased width of the tires. Thanks in advance.
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10-15-2019, 11:08 AM | #3 |
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That's unfortunate re: the fronts. Will 265s clear with spacers?
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10-15-2019, 12:48 PM | #4 |
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10-15-2019, 01:57 PM | #5 |
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I see. I assume you tried fitting the back wheel in the front? This test would only be accurate if fronts and rears have the same offset. Do you know if that is the case?
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10-15-2019, 03:32 PM | #6 | |
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21" Style 765M M Performance Oribit Gray, Machine-Polished Light Alloy Wheel - 9.5Jx21 ET:31 Part Number: 36-11-8-095-559 255/40/21 Rear 21" Style 765M M Performance Oribit Gray, Machine-Polished Light Alloy Wheel - 10Jx21 ET:39 Part Number: 36-11-8-095-560 265/40/21 |
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10-15-2019, 03:47 PM | #7 | ||
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onfireX5, can you please comment?
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10-15-2019, 05:29 PM | #8 |
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Did not try the rear wheel/tire combo. Ordered 265’s, took their section width over the 255 and measured the clearance. Sent the 265’s back.
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10-15-2019, 09:54 PM | #9 | |
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10-17-2019, 11:02 AM | #10 |
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Since 265s in the front are a no go, what would you guys recommend for the wider rear tires setup?
255/40/R21 fronts (stock size) 295/35/R21 rears OR 255/40/R21 fronts (stock size) 285/35/R21 rears
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10-17-2019, 11:49 AM | #12 |
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I was leaning towards 295s as well. My only concerns were: will it fit without any clearance issues and the fact that I am significantly widening the rears while keeping the fronts stock (don't want it to have any negative impact on the handling). 285s in the rear would be a modest / less aggressive change hence the reason I am considering this option.
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10-17-2019, 11:56 AM | #14 |
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You also may want to contact Ind-Distribution. They are experts on BMW and they recently purchased a X3M comp. Spoke to them and I know they are working on fitment.
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10-17-2019, 12:06 PM | #15 |
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Will do, thanks.
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10-21-2019, 06:05 PM | #17 |
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You say that 265's will hit the front bracket. Which bracket? I see that they could possibly rub the strut. I think small spacer front and rear would solve the problem. Am I wrong? I'm looking at a x3m now, but need to have all-seasons. I've done winter wheels/tires in the past and don't want to go that route. I have found that if you go up one size, 255/265 to 265/275 then all-seasons are available.
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10-23-2019, 12:26 PM | #18 | |
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10-23-2019, 05:43 PM | #19 |
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I'm all for going wider in the rear but are there going to be any adverse effects to the vehicle's handling?
There's got to be a reason why the X3MC came with 255 F/265 R spec. |
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10-23-2019, 06:37 PM | #22 |
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I went with 265/40/21(f) and 285/40/21(r) on stockers with 15mm spacers. I posted some pics on my build thread.
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