09-05-2021, 06:09 PM | #24 |
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F3/4 series bolt patter is 5x120. if the wheel has a centerbore that's smaller than 72.56 it will not fit over the hub. if the cb is larger, hubcentric rings are recommended but not absolutely necessary. there are numerous choices of OEM and aftermarket wheels with specifications in 18"x 8" or 8.5" and offsets between ET30-ET38.
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09-06-2021, 01:35 PM | #25 | |
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09-06-2021, 01:38 PM | #26 | |
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09-06-2021, 06:54 PM | #27 |
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all wheels have an ET or offset associated with them. it is alternately denoted with a + or -, i.e. +35. it is distance from the hub mounting surface to the centerline of the wheel barrel.
higher offset is tucked in, lower offset is further out. if offset is too high, tires may rub something within the fenderwell i.e. struts or wheel spoke may contact the brake caliper. too low may result in the tires rubbing the outside fender lip or fenderwell liner while turning. excessive offset deviation changes suspension geometry, scrub radius and track width and may positively or negatively affect turning, handling, braking, and spring rate, depending on how far you're deviating, if it's outwards or inwards from the factory offset and depending if it's front or rear. use of spacers lowers offset. OEM is ET34 or ET36 front and ET47 for the rear on staggered setups and ET34 all around for square setups. please use google or [search] function for "wheel offset" to further inform yourself on this matter. |
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09-20-2021, 01:10 AM | #28 |
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Quick question would 40 ET be too big ? Would I need rings for that or should it be fine ?
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09-20-2021, 01:23 AM | #29 | |
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09-20-2021, 01:37 AM | #30 | |
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car. see wdeerfields car, https://f30.bimmerpost.com/forums/sh...0&postcount=15 . Last edited by alohasurftoad; 09-20-2021 at 01:45 AM.. |
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09-20-2021, 01:40 PM | #31 | |
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Last edited by Roach1; 09-20-2021 at 02:02 PM.. |
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09-20-2021, 05:18 PM | #32 |
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using a tape ruler like that is too inaccurate. you need to measure with a vernier caliper. from the pic, it looks like it could be 72.56mm.
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09-29-2021, 10:06 AM | #33 |
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If you don't have M Sport brakes, 17s should fit despite what all the tire sites claim. 17s will perform better in snow and obviously significantly cheaper
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