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Need Help...with wheels.
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04-20-2009, 07:36 PM | #1 |
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Need Help...with wheels.
Sorry, I have read other post on this but I want to make sure.
Will these wheels be ok, or do I have to get new tires. I have a 2008 335xi with 17's. 19x8.5 front, 19x10 back 245/35/19 front, 275/30/19 rear Thanks in advance. |
04-20-2009, 08:19 PM | #2 |
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That tire combo is no good.
The difference in the rotating diameter is at 1%. The maximum difference for an Xi vehicle is 1%. Running right on the high end of the limit is a risk in my opinion. The best set of wheels are 235/35/19 Front 275/30/19 Rear The rotating diameter difference with this set is only 0.1% which is pretty much 0% difference. Much safer. |
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04-20-2009, 08:44 PM | #4 | |
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Quote:
However OP is putting a staggered setup on his car which means having a rotating diameter difference between fronts and rears of no more than 1% (high end) is allowed. |
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04-21-2009, 09:00 AM | #5 |
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depending on offset and suspension setup, 275s may rub in the rear. This is the reason many go with 235/35 up front and 265/30 in the rears
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04-23-2009, 05:47 AM | #6 |
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Ok, I am currently using this setup and there is no rub because I am on stock suspension. Im really trying not to buy new tires if not needed. What would be the affects if I continue to use this setup?
Thanks again. |
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04-23-2009, 12:30 PM | #7 |
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Well with that set up you are at 1.01% differance. since that is right at the maxium limit, you will be putting a little more stress on the transfer case, and might trigger a DSC fault. I would really recommend to get a set of 235/35R19 for the front. Then you will have a .08% difference.
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04-23-2009, 01:58 PM | #8 |
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You do have an increase risk of blowing the AWD transfer case.
Keeping the difference below 1% is fine by BMW. I guess the margin of error they set was 1%. |
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