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Tired of 18's, want to downgrade to 17
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12-11-2013, 04:07 PM | #1 |
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Tired of 18's, want to downgrade to 17
Right now I have a 2006 330 with the Style 162 staggered 18" rims. But at least 2 or 3 of them are bent. So I want to downgrade to 17" rims, specifically the Style 286 from a newer E90.
Old --------------------> New Front 225/40-18 -----> 225/45-17 Rears 255/35-18 -----> 255/40-17 The rears would have the same rolling diameter, but the fronts would be a tenth of an inch smaller in diameter. Would this screw up the FTM tire monitors? (I have FTM, not TPMS). Also, the rims are the same width (8/8.5 staggered), but the new ones have different offset (34/39 instead of 34/37). This means the rears would be pushed in by 2mm. Would I even notice this? Last edited by Bbox; 12-11-2013 at 04:22 PM.. |
12-11-2013, 04:27 PM | #2 | |
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Quote:
I was fine with +38 rear offset, shouldn't be noticeable. |
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12-11-2013, 04:41 PM | #3 |
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The FTM system on the 2006 measures the rolling diameter to detect whether there's been a pressure loss.
It doesn't actually measure the tire pressure, like the TPMS system does. |
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12-12-2013, 02:20 PM | #4 |
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The tire sizing you have selected looks fine, so you shouldn't have any issues.
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12-13-2013, 09:33 AM | #5 |
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I agree with the above two posts.
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