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Technical Topics Wheels and Tires 330e 20" fitting guide

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      02-13-2020, 07:42 AM   #1
AbsolutRufuus
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330e 20" fitting guide

Hi!

I'm looking at fitting Borbet BY 20" rims on my G20 330e and I'm trying to find a good fit. I saw the Borbet rims first in a previous post on Bimmerpost by @joca and thought they might be a cheaper alternative than the M795 rims.

Post:
https://g20.bimmerpost.com/forums/sh....php?t=1596409

But I haven't been able to get an answer on what specs he has on the rims. I'm looking at:

Front: 8x20 5x112 ET25
Back: 9x20 5x112 ET45

Do you guys think this is a good fit or do you have any suggestions or input?

Thank you!
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      02-13-2020, 09:29 AM   #2
Gdiddy23
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Quote:
Originally Posted by AbsolutRufuus View Post
Hi!

I'm looking at fitting Borbet BY 20" rims on my G20 330e and I'm trying to find a good fit. I saw the Borbet rims first in a previous post on Bimmerpost by @joca and thought they might be a cheaper alternative than the M795 rims.

Post:
https://g20.bimmerpost.com/forums/sh....php?t=1596409

But I haven't been able to get an answer on what specs he has on the rims. I'm looking at:

Front: 8x20 5x112 ET25
Back: 9x20 5x112 ET45

Do you guys think this is a good fit or do you have any suggestions or input?

Thank you!
Love the way these look and looked at potentially buying these same ones myself. I want a wider 10" tire in the rear tho and don't think these are offered that wide.
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      02-14-2020, 03:17 AM   #3
AbsolutRufuus
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Quote:
Originally Posted by Gdiddy23 View Post
Love the way these look and looked at potentially buying these same ones myself. I want a wider 10" tire in the rear tho and don't think these are offered that wide.
I agree, I think they look great! I don't believe they make them in 10.0x20 either. But for me I'm happy with 9.0x20 in the rear I believe the specs I wrote should be a good fit (but not if you want wider back rims, of course).
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      02-14-2020, 05:20 AM   #4
Denys_BMW
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Quote:
Originally Posted by AbsolutRufuus View Post
Quote:
Originally Posted by Gdiddy23 View Post
Love the way these look and looked at potentially buying these same ones myself. I want a wider 10" tire in the rear tho and don't think these are offered that wide.
I agree, I think they look great! I don't believe they make them in 10.0x20 either. But for me I'm happy with 9.0x20 in the rear I believe the specs I wrote should be a good fit (but not if you want wider back rims, of course).
I think it would be better to take 9jx20 ET35 for rear axle, because OEM is 8,5jx20 ET40.
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      02-17-2020, 04:36 AM   #5
AbsolutRufuus
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Quote:
Originally Posted by Denys_BMW View Post
I think it would be better to take 9jx20 ET35 for rear axle, because OEM is 8,5jx20 ET40.
You sure? I guess it all depends on if the rim should poke out or be closer to the suspension. I have no idea hos close it is to the suspension with stock rims. Here's pictures of the difference from stock rim to between ET35 (left picture) and ET45 (right picture). But if I get ET45 I guess I could always put on spacers if needed.
Attached Images
  
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      02-19-2020, 08:26 AM   #6
Denys_BMW
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9jx20 ET45 will be inside wheel arch. For my taste when wheel stands flush with the arch. And I don't like spacers. In my opinion spacers are not safe.
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      02-19-2020, 09:01 AM   #7
sspdw
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Quote:
Originally Posted by Denys_BMW View Post
9jx20 ET45 will be inside wheel arch. For my taste when wheel stands flush with the arch. And I don't like spacers. In my opinion spacers are not safe.
On a 9" you should go for et35. Its 11.25mm further out ant it will be perfect.
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      02-19-2020, 09:51 AM   #8
Denys_BMW
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Quote:
Originally Posted by sspdw View Post
Quote:
Originally Posted by Denys_BMW View Post
9jx20 ET45 will be inside wheel arch. For my taste when wheel stands flush with the arch. And I don't like spacers. In my opinion spacers are not safe.
On a 9" you should go for et35. Its 11.25mm further out ant it will be perfect.
The answer above I say exactly the same thing.
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      02-20-2020, 06:01 AM   #9
AbsolutRufuus
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Quote:
Originally Posted by Denys_BMW View Post
The answer above I say exactly the same thing.
Alright, I trust you guys. ET35 it is It's probably going to be a few months before they're on but I'll keep you posted. Thanks for your input!
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      Yesterday, 07:30 AM   #10
AbsolutRufuus
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Update: Just ordered the following.

Borbet BY MTP
2x 8x20 5x112 ET25
2x 9x20 5x112 ET35
2x Toyo Proxes Sport 225/35-20
2x Toyo Proxes Sport 255/30-20
4x TPMS sensors
1x Balancing and fitting at reseller

As said, it's probably going to be a couple of months before they're on. But I'll keep you guys posted if you're interrested in the result
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      Yesterday, 10:10 PM   #11
Gdiddy23
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Quote:
Originally Posted by AbsolutRufuus View Post
Update: Just ordered the following.

Borbet BY MTP
2x 8x20 5x112 ET25
2x 9x20 5x112 ET35
2x Toyo Proxes Sport 225/35-20
2x Toyo Proxes Sport 255/30-20
4x TPMS sensors
1x Balancing and fitting at reseller

As said, it's probably going to be a couple of months before they're on. But I'll keep you guys posted if you're interrested in the result
Nice! There's a set of Borbets somebody else posted pics of and it looked amazing. Just wish I had the option to get them at 10" wide in the rears. Kinda a deal breaker for me, love the fat back tire look
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