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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes Wheel offset question
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      04-27-2014, 08:14 PM   #1
deepat04
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Wheel offset question

I am planning on installing 20" aftermarket wheels.

The wheels only come in a 20x8.5 35 offset and 20x10 40 offset

I will be lowering the car with H&R sport springs.

I would like these wheels to sit flush as possible without causing any rubbing. I am considering adding 10mm spacers to the two front wheels and 5mm spacer to the two rear wheels. Final specs would be 20x8.5 25 offset and 20x10 35 offset?

Are the above specs with spacers appropriate for the F10 body or should I go with a different size spacer?

I am looking to run a 245/30/20 tire up front and either a 275/30/20 in the rear OR 285/30/20, could someone advise me on which set up is ideal.

Thank you

Deepat04

Last edited by deepat04; 04-27-2014 at 08:21 PM..
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      04-27-2014, 08:19 PM   #2
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245 35 20
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285 30 20
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      04-27-2014, 08:37 PM   #3
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Rear setup will be a tad aggressive but should work. You say get some slight rubbing, think it is pretty close. Fronts should be good to go.
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      04-27-2014, 08:50 PM   #4
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You'll be fine. You may even want to run a 12 or 15mm spacer up front
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      04-27-2014, 10:02 PM   #5
deepat04
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Quote:
Originally Posted by Dan1416 View Post
You'll be fine. You may even want to run a 12 or 15mm spacer up front
20x8.5 20/22.5 offset will not be too aggressive?

-Deepat04

Last edited by deepat04; 04-27-2014 at 10:08 PM..
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      04-27-2014, 10:07 PM   #6
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Quote:
Originally Posted by bake View Post
Rear setup will be a tad aggressive but should work. You say get some slight rubbing, think it is pretty close. Fronts should be good to go.
I can stay with 20x10 40 offset. I am wanting to avoid any issues, from what I have read 36 is flush with a 20x10 offset so I figured 35 is not too far off and 40 is about 4mm off based on those recommendations.

My goal is to be flush without any rubbing.

I typically never drive with a full car.

-Deepat04
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      04-27-2014, 10:07 PM   #7
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Quote:
Originally Posted by deepat04
Quote:
Originally Posted by Dan1416 View Post
You'll be fine. You may even want to run a 12 or 15mm spacer up front
20x8.5 20/22.5 offset will not be too aggressive?
Nope. I run a 21x9 with a final offset of 25 and I'm lowered on H&R springs with no rubbing and it could probably come out another 5mm easily
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      04-27-2014, 10:33 PM   #8
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Quote:
Originally Posted by Dan1416 View Post
Nope. I run a 21x9 with a final offset of 25 and I'm lowered on H&R springs with no rubbing and it could probably come out another 5mm easily
Based on that information, I will look into a 15mm spacer on the 20x8.5 35 offset as well as well as an 18mm.
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      04-27-2014, 11:59 PM   #9
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you can safely go to 20 up front and
30 out back (there is a guy selling 3mm spacers on ebay for $30)
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      04-28-2014, 12:46 AM   #10
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Quote:
Originally Posted by MELLOWYELLOW06 View Post
you can safely go to 20 up front and
30 out back (there is a guy selling 3mm spacers on ebay for $30)
20x8.5 20 offset.
20x10 30 offset?? hmm..based on what I have read 30 would poke....?
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      04-29-2014, 08:12 PM   #11
deepat04
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Decided to go a different route with the wheels.

20x8.5 front 34offset-
20x9.5 rear 37 offset

What would be the recommended offset?

I'm looking into 12.5mm front and 12.5mm rear?

Deepat04

Last edited by deepat04; 04-29-2014 at 08:36 PM..
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      04-29-2014, 11:08 PM   #12
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Quote:
Originally Posted by MELLOWYELLOW06 View Post
245 35 20
&
285 30 20
This plus ET20 Front and ET33 rear should be very flush.

I am running ET35 on a 20x10.5 rear setup and its flush with zero rubbing with ACS springs. Might even be able to squeeze another 2-3mm honestly...

Alan
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      04-30-2014, 01:23 AM   #13
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I'm sorry
I just noticed my phone corrected to 30 rear

35 to 36 will be a safe bet out back
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      04-30-2014, 12:06 PM   #14
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What is everyone considering flush? I tried VMR v710s 20x9 et 20 front and 20x10 et 25 rear and the rims themselves are just visible from the side of the car, poking out.
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      04-30-2014, 12:41 PM   #15
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For me i am looking at it from top dead center. 12'oclock position. I wanted my tire/wheel as flush to the fender at that area without rubbing and I think I accomplished that. Looking at it from the back side view from the lower bumper area my wheel and tire does look like its stick out.

Alan
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      04-30-2014, 02:21 PM   #16
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Quote:
Originally Posted by Alan l. View Post
This plus ET20 Front and ET33 rear should be very flush.

I am running ET35 on a 20x10.5 rear setup and its flush with zero rubbing with ACS springs. Might even be able to squeeze another 2-3mm honestly...

Alan
I will now be running 20x9.5 with a 37 offset

Looking for a recommendation on that...

Thank you

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      04-30-2014, 11:51 PM   #17
deepat04
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Plan to run a final offset on the front of 20.. 20x8.5 wheel
Rear 20x9.5 final offset 25

Will the rear work?

Also on a 9.5 rim what tire size is recommended 275 or 285?

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      05-01-2014, 11:22 AM   #18
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Quote:
Originally Posted by Alan l. View Post
For me i am looking at it from top dead center. 12'oclock position. I wanted my tire/wheel as flush to the fender at that area without rubbing and I think I accomplished that. Looking at it from the back side view from the lower bumper area my wheel and tire does look like its stick out.

Alan
Thanks Alan, mine definately stick out and it bugs me. I am getting these replaced with a set with higher offset, using spacers if I have to so they can be brought out to flush if need be,.
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      05-01-2014, 12:05 PM   #19
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^^ 20x10 ET25 is VERY aggressive for the F10. Def. not a look for everyone especially if the car isn't lowered.

Alan
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      05-01-2014, 12:33 PM   #20
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These are my 20x8.5 & 20x10

+20 front and +35 out back with 245/35/20 & 285/30/20 Toyo T1S
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      05-01-2014, 10:54 PM   #21
deepat04
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Quote:
Originally Posted by MELLOWYELLOW06 View Post


These are my 20x8.5 & 20x10

+20 front and +35 out back with 245/35/20 & 285/30/20 Toyo T1S
Thank you for the reference picture.

Nice set up! Have seen other pictures of your ride, well done.

I am going to do 20 up front on the 8.5x20 wheel

Still trying to confirm the rear....25 or 27 offset on a 20x9.5
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      05-01-2014, 11:48 PM   #22
deepat04
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Went with a
20x8.5 20 offset
20x9.5 25 offset

245/35/20
275/30/20

Bridgestone tires

Last edited by deepat04; 05-02-2014 at 08:32 AM..
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