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      02-25-2019, 10:15 PM   #1
12bmw535xi
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Aggressive wheel fitment for M550

What would be the best width/offset for a set of 20" wheels maximizing available space without rubbing/fender modifications? I'm thinking about going 20x9 +25 and 20x10.5 +35. Any advice?
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      03-09-2019, 10:31 PM   #2
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Quote:
Originally Posted by 12bmw535xi View Post
What would be the best width/offset for a set of 20" wheels maximizing available space without rubbing/fender modifications? I'm thinking about going 20x9 +25 and 20x10.5 +35. Any advice?

I am trying to figure this one out myself but no one seems to know ....
i was looking at z performance wheels with similar setup..
20x9 et35 and rear 20x10,5 ET33.... I am not sure about those rear wheels...specially as I will lower my car too

It would be nice to have some thread just for 20'' if people would care to share their experience
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      03-10-2019, 05:43 PM   #3
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Quote:
Originally Posted by aadum View Post
Quote:
Originally Posted by 12bmw535xi View Post
What would be the best width/offset for a set of 20" wheels maximizing available space without rubbing/fender modifications? I'm thinking about going 20x9 +25 and 20x10.5 +35. Any advice?

I am trying to figure this one out myself but no one seems to know ....
i was looking at z performance wheels with similar setup..
20x9 et35 and rear 20x10,5 ET33.... I am not sure about those rear wheels...specially as I will lower my car too

It would be nice to have some thread just for 20'' if people would care to share their experience
What I'm getting from wheels company's is 20x9 +25 and 10.5 +38. About 1" of concave in the front and 2.8" in the rear. I hope this helps.
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      03-11-2019, 01:59 AM   #4
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Quote:
Originally Posted by aadum View Post
I am trying to figure this one out myself but no one seems to know ....
i was looking at z performance wheels with similar setup..
20x9 et35 and rear 20x10,5 ET33.... I am not sure about those rear wheels...specially as I will lower my car too

It would be nice to have some thread just for 20'' if people would care to share their experience
I think those rears are too aggressive for G30.

20mm spacers with the OEM wheels is the most popular setup many owners are running.
20x10,5 ET33 would stick out 10mm further than this and I don't think there is room for that. Especially if you will lower your car.
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      03-11-2019, 07:56 AM   #5
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Quote:
Originally Posted by emre View Post
I think those rears are too aggressive for G30.

20mm spacers with the OEM wheels is the most popular setup many owners are running.
20x10,5 ET33 would stick out 10mm further than this and I don't think there is room for that. Especially if you will lower your car.
i' ve seen a guy fitting m5 wheels on his car somewhere on the forum (similar setup), but on the pictures it looked like the the wheels are sticking out.
I want to fit concave wheels but if i go with 9 instead of 10.5 i will loose the 'depth' ....unfortunately that company doesn't make anything in between....
i guess i will have to start search for something else or go for a original wheels
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      03-11-2019, 08:00 AM   #6
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have you seen this ?

https://g30.bimmerpost.com/forums/sh....php?t=1533602
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      03-11-2019, 08:55 AM   #7
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Quote:
Originally Posted by aadum View Post
Yup, I did. After the research I have done, 20x9 +25 and 10.5 +38 are the sizes that I'm going with. I will have the wheels in about 30 days and will let you know how it played out.
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      03-13-2019, 09:29 AM   #8
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Originally Posted by 12bmw535xi View Post
Yup, I did. After the research I have done, 20x9 +25 and 10.5 +38 are the sizes that I'm going with. I will have the wheels in about 30 days and will let you know how it played out.
Thanks.... when you do..please make few pictures from side and rear
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      05-02-2019, 08:49 PM   #9
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any updates
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      05-03-2019, 05:53 AM   #10
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any ideas if 20x10J ET25 will fit in rear?
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      05-05-2019, 11:33 PM   #11
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Originally Posted by aadum View Post
any ideas if 20x10J ET25 will fit in rear?
That's too agressive. You should stick with +30.
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      05-12-2019, 10:43 PM   #12
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what about 11j? what would be ideal et for that ?
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      05-14-2019, 11:20 AM   #13
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what about 11j? what would be ideal et for that ?
According to my calculations, you should be flushed with et45.
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      05-14-2019, 08:43 PM   #14
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Quote:
Originally Posted by 12bmw535xi View Post
According to my calculations, you should be flushed with et45.
i was doing the same math...however i am worried about almost 2cm going closer to the struts...not sure if there is enough space there
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      05-15-2019, 10:25 PM   #15
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Quote:
Originally Posted by aadum View Post
Quote:
Originally Posted by 12bmw535xi View Post
According to my calculations, you should be flushed with et45.
i was doing the same math...however i am worried about almost 2cm going closer to the struts...not sure if there is enough space there
Stick with 10.5
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      05-16-2019, 01:53 AM   #16
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Quote:
Originally Posted by 12bmw535xi View Post
Yup, I did. After the research I have done, 20x9 +25 and 10.5 +38 are the sizes that I'm going with. I will have the wheels in about 30 days and will let you know how it played out.
did you mount those wheels?
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      05-16-2019, 06:22 AM   #17
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Here is a 20x10.5 ET35 on the rear of mine for comparison.
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      05-16-2019, 10:49 AM   #18
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Quote:
Originally Posted by Dobie Dog View Post
Here is a 20x10.5 ET35 on the rear of mine for comparison.
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Originally Posted by Dobie Dog View Post
Here is a 20x10.5 ET35 on the rear of mine for comparison.

Looking good! Has this been lowered?
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      05-16-2019, 10:52 AM   #19
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Quote:
Originally Posted by stk24178 View Post
Quote:
Originally Posted by Dobie Dog View Post
Here is a 20x10.5 ET35 on the rear of mine for comparison.
Quote:
Originally Posted by Dobie Dog View Post
Here is a 20x10.5 ET35 on the rear of mine for comparison.

Looking good! Has this been lowered?
It's not lowered. I will have that completed next week.
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      05-16-2019, 11:38 PM   #20
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Quote:
Originally Posted by Dobie Dog View Post
Here is a 20x10.5 ET35 on the rear of mine for comparison.
Looks good! It will look great when lowered! My offset is et38 as I was making room for 295 tire.
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      06-15-2019, 01:48 PM   #21
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Quote:
Originally Posted by aadum View Post
Quote:
Originally Posted by 12bmw535xi View Post
According to my calculations, you should be flushed with et45.
i was doing the same math...however i am worried about almost 2cm going closer to the struts...not sure if there is enough space there
If the g30 has as much room in the rear wheel wells as the f10, you will have no problem with 11" wide rears.
I got 20x11 ET46 on my f10, and there's still about 2cm of clearance to the strut.
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      07-16-2019, 09:49 AM   #22
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I'm planning to order a set of wheels with parameters 9J +25 10.5 + 38 and put tires 255/30 and 305/25 - could anybody advise will this work?
255/30 and 295/25 will work for sure, but what about rears with 305/25 as for me it will be better for 10.5 and fronts with 255/30
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