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      03-10-2017, 07:10 AM   #1
dawg1
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New wheel offset, size help

On a 640/650 F13 (2014), would these size wheels fit well enough to use and look good?

Front:
9" wheel with 11mm less inside (compared to stock) - 15mm more outside

Rear:
10" wheel with 3mm less inside - 23mm more outside

I suppose the front 'could' rub at extreme turns -is that right? Is the extension on the outside going to look ok?

Thanks for any input.
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      03-10-2017, 12:16 PM   #2
ndinh
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Looks like your offsets are very aggressive (low) for both front and rear. The fronts will be ok because alot of guys run a 10mm spacer with their stock wheels anyways so it'll stick out another 5mm or so, not extremely bad. The rears will be very aggressive and may look strange. If your car isn't lowered then you won't have rubbing issues. What are the ET numbers? Recommended ET's for 20x9 are between 30-36 +/- and 20x10.5 are 36-42 +/-.
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      03-10-2017, 12:34 PM   #3
dawg1
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Thanks for the reply. The wheel size I was considering for the rear has these specs:

10X20 ET:34

I think that's the spec for the M5 343 rear wheel in which I found a number of threads saying people use that wheel on their 640/650 F13. I may be mistaken but I guess the rear 'should' look ok if I go by the other threads (??). Please correct me if I've made an error somehow though. Thanks.
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      03-10-2017, 12:48 PM   #4
ndinh
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That offset should be fine. I'm running 20x10.5 ET42 in the rear and after plugging your 20x10 ET34 into willtheyfit, yours will stick out 1.7mm further than mine which will be fine. My rears are perfect, even slightly aggressive when looking at the car from the rear so yours will be a tiny bit more aggressive.
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      03-11-2017, 09:50 PM   #5
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There are many people running on 343M (M5) and are fine.
343M (M5) front : 9x20 ET 32 ; rear : 10x20 ET 34
Compare to 373 front : 8.5x20 ET 33 ; rear : 9x20 ET 44
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      03-23-2017, 01:52 PM   #6
drmlee
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im running 21x10.5 et34 295/25/21 lowered, it sits perfect.
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      03-28-2017, 06:41 PM   #7
MSUGOGRN
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Okay fellas. Need your help again based on some comments I had in the lowering thread. Please let me know your thoughts on the following set up.

I have purchased (and they have now been milled) the following wheels:
Front: 20x9 et30
Rear: 20x10.5 et38

I am having the car lowered with Eibach pro kits (0.8" rear / 1.0" front)

I am buying Bridgestone S04 Poles
Suggested tires are 245/35/20 front & 285/30/20 rear

I really don't want rubbing but I also can't stand a stretched look. Will going 255/35/20 front & 295/30/20 rear be good or even better? Just want to make sure rubbing is not a possibility.

Thanks!
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      03-29-2017, 11:33 AM   #8
ndinh
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Quote:
Originally Posted by MSUGOGRN View Post
Okay fellas. Need your help again based on some comments I had in the lowering thread. Please let me know your thoughts on the following set up.

I have purchased (and they have now been milled) the following wheels:
Front: 20x9 et30
Rear: 20x10.5 et38

I am having the car lowered with Eibach pro kits (0.8" rear / 1.0" front)

I am buying Bridgestone S04 Poles
Suggested tires are 245/35/20 front & 285/30/20 rear

I really don't want rubbing but I also can't stand a stretched look. Will going 255/35/20 front & 295/30/20 rear be good or even better? Just want to make sure rubbing is not a possibility.

Thanks!
Can't really help with the 295 with I've had or have 3 of the 4 sizes mentioned on the same size wheels. The 245 and 255 fronts and 285 rear won't look stretched at all. I guess if money isn't a factor, I'd go for 255/295. I believe upstate650 and another member are running 295's without issues. FYI, I'm running 255/285 currently.
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      03-29-2017, 01:07 PM   #9
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Quote:
Originally Posted by ndinh View Post
Can't really help with the 295 with I've had or have 3 of the 4 sizes mentioned on the same size wheels. The 245 and 255 fronts and 285 rear won't look stretched at all. I guess if money isn't a factor, I'd go for 255/295. I believe upstate650 and another member are running 295's without issues. FYI, I'm running 255/285 currently.
I am running 255/295 without issue, but I'm not lowered, so I cant answer his question with certainty. I would take issue with your statement that a 285 tire wouldn't look stretched on a 10.5" wheel. I haven't seen it myself, but 295's on my 10" wheel look perfect I guess it depends on your definition of stretched. Msugogrn is more limited in tire combinations than you, due to xdrive.
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      03-29-2017, 08:00 PM   #10
MSUGOGRN
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Thanks fellas as always. I made an executive decision and went with the 255 and 295's. I actually searched a lot for that exact same size of wheel with the exact same Bridgestone tire and found multiple forums discussing this set up and concluded the look would be a little bit stretched with the 285 and 245's. Thanks again.
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      03-30-2017, 08:24 AM   #11
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Quote:
Originally Posted by MSUGOGRN View Post
Thanks fellas as always. I made an executive decision and went with the 255 and 295's. I actually searched a lot for that exact same size of wheel with the exact same Bridgestone tire and found multiple forums discussing this set up and concluded the look would be a little bit stretched with the 285 and 245's. Thanks again.
you wont be disappointed - post some pics once you get them on!
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      03-26-2019, 02:05 PM   #12
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hello guys, I want to buy new wheels and I doubt about offsets.
Rear 10,5J ET42 does it fit to f06 640d?

Last edited by Sergejevs; 03-26-2019 at 02:18 PM..
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      03-26-2019, 02:49 PM   #13
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Quote:
Originally Posted by ndinh View Post
That offset should be fine. I'm running 20x10.5 ET42 in the rear and after plugging your 20x10 ET34 into willtheyfit, yours will stick out 1.7mm further than mine which will be fine. My rears are perfect, even slightly aggressive when looking at the car from the rear so yours will be a tiny bit more aggressive.
Do you have photo with your 20x10,5 ET42?
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      03-27-2019, 04:58 PM   #14
ndinh
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Here ya go

Quote:
Originally Posted by Sergejevs View Post
Do you have photo with your 20x10,5 ET42?
Found a picture from a couple years back. 10.5 ET42. Wheels are flush with the fender but the Michelins stick out a few mm.
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      03-28-2019, 12:00 AM   #15
thiscarlife
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I run rear 11 20inch et 42
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      03-28-2019, 12:04 AM   #16
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Quote:
Originally Posted by thiscarlife View Post
I run rear 11 20inch et 42
295 rear tyres

Lowered on h&r springs (biggest regret and useless)
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      03-28-2019, 01:40 AM   #17
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Quote:
Originally Posted by thiscarlife View Post
295 rear tyres

Lowered on h&r springs (biggest regret and useless)
Perfect offset and tire combination in my opinion (of course if car is lowered)
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      03-28-2019, 03:33 AM   #18
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Quote:
Originally Posted by thiscarlife View Post
295 rear tyres

Lowered on h&r springs (biggest regret and useless)
Why the regret/useless? I just got my H&Rs in this week. Id like to know your issues before I pay to have them installed.
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      03-28-2019, 03:49 AM   #19
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Quote:
Originally Posted by ndinh View Post
Found a picture from a couple years back. 10.5 ET42. Wheels are flush with the fender but the Michelins stick out a few mm.
Thank you. What tyre size?
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      03-28-2019, 03:50 AM   #20
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Quote:
Originally Posted by thiscarlife View Post
295 rear tyres

Lowered on h&r springs (biggest regret and useless)
Very nice
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      03-28-2019, 04:01 AM   #21
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640i and 640d is the same by offsets, maybe someone know?
I want to buy ispiri ffr1 wheels 10,5J ET42. Forged, light wheels. I'm affraid that tyre will scrub fender.
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      03-28-2019, 10:58 AM   #22
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Quote:
Originally Posted by mjd41985 View Post
Why the regret/useless? I just got my H&Rs in this week. Id like to know your issues before I pay to have them installed.
I think what he means by that is the rear end is not low enough compare to the front, like a rake stance.
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