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Old 07-20-2019, 10:16 PM
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Rim Size Variance

I'm shopping for new rims/wheels, depending on what you call them and am trying to find an acceptable amount of deviation on offset, and width, since 18in diameter are a factory option anyway that should be fine. Some wheels I like are like 18x8 +35 offset which is 0.5in thickness difference from both the 8.5 and 7.5. Is this acceptable or will this damage the vehicle? and what is a reasonable offset variance, since I've read it doesn't have to be exact, but it should be close.
(Edit) Is it possible to convert do a different lug size? I feel like this would go back to doing a lug bolt to stud conversion.
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Last edited by lkv0315; 07-20-2019 at 10:25 PM.
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Old 07-21-2019, 01:34 AM
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Some factory wheels are 315s. Use the tire rolling circumference calculator to keep the rolling circumference as close as possible I wouldn't want to do more than 1% difference. Tires will often have a rim width recommendation and I would stay close to that.

255/55/18 I've mounted on 7.5 to 8.5 rims without any issues but I would not recommend going thinner unless you run a thinner tire like 235/60/18.

I would not change the lugs. The bolt method like BMW uses is superior in numerous ways


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Old 07-21-2019, 10:13 AM
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Quote:
Originally Posted by andrewwynn View Post
Some factory wheels are 315s. Use the tire rolling circumference calculator to keep the rolling circumference as close as possible I wouldn't want to do more than 1% difference. Tires will often have a rim width recommendation and I would stay close to that.

255/55/18 I've mounted on 7.5 to 8.5 rims without any issues but I would not recommend going thinner unless you run a thinner tire like 235/60/18.

I would not change the lugs. The bolt method like BMW uses is superior in numerous ways
But will cone seat lug bolts fit any kind of aftermarket wheels? that was my big concern about the whole thing.

And would anyone be willing to message with me privately to figure out which wheels will fit and won't? I have a list of wheels that I like compiled already.
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Last edited by lkv0315; 07-21-2019 at 10:26 AM.
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Old 07-21-2019, 10:49 AM
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Just post here. There are many people here to die problems. I wouldn't myself consider putting on wheels not hub centric. I'm not sure if the BMW wheels have cone or sphere bolts but I would modify the wheel if needed to match and of course use hub rings to match the center.

I have e70 wheels for my wife's X5 for example. They require a ring that fits on the hub to make up the difference of the hub and wheel.
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Old 07-21-2019, 11:45 AM
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Just post here. There are many people here to die problems. I wouldn't myself consider putting on wheels not hub centric. I'm not sure if the BMW wheels have cone or sphere bolts but I would modify the wheel if needed to match and of course use hub rings to match the center.

I have e70 wheels for my wife's X5 for example. They require a ring that fits on the hub to make up the difference of the hub and wheel.
Oh okay, that makes sense, my issue is that I can’t find wheels I like that have a similar tire size so hopefully I can just take the ones off of the factory wheels since they’re only 2 months old
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Old 07-21-2019, 01:15 PM
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There are like 400 styles of BMW wheels


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