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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > E92 coupe Offset information - Everyone with aftermarket rims plz chime in !!!!!!!!!!



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Wheel offset calculator courtesy of BimmerPost.com. You may use this calculator to calculate what tire sizes you might need if you upgrade your tires, or what wheel sizes/offsets are compatible with your car.
    Current Wheel Width  inches             Current Wheel Offset  mm.
         New Wheel Width  inches                  New Wheel Offset  mm.
 
TIRE WIDTH
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ASPECT RATIO
- WHEEL DIAMETER
ORIGINAL TIRES
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NEW TIRES
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Based on your stock wheel setup, your new wheel will have:
Original Tires Diameter (in.)
      New Tires Diameter (in.)
  Difference in diameter (in.)
           Percent Difference %
                     
Speedo @60mph will read: mph
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      04-09-2008, 07:05 PM   #45
Bogo Shipyo
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^ that is true

im drop with h and r sport springs

from what offset to what offset can i fit in the front ?
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      04-09-2008, 07:08 PM   #46
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Quote:
Originally Posted by bogoshipyo View Post
^ that is true

im drop with h and r sport springs

from what offset to what offset can i fit in the front ?
You can go from a 30 - 40 on an 8.5"

On a 8" you can go from 25 - 45

of course the higher the offset, the more it will tuck

However, if you are going with 245's, i'd suggest doing at least a 32mm on 8.5" or 27mm on an 8"
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      04-10-2008, 12:37 PM   #47
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The width of the wheel also depends on what wheel you go with. Some wheels are only available in 19x8, and some wheels are only available in 19x8.5.

Quote:
Originally Posted by bogoshipyo View Post
one question , would 245 on a 19x8 be to much ? (for the front of course)
or im better off with 19x8.5

kim
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      04-10-2008, 07:47 PM   #48
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^ thanks a lot
this is very useful information
i was planning to get a used set of equips with 19x8 front with 245/30 tires


thanks once again

kim
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      04-10-2008, 10:40 PM   #49
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kudo for joeb and exclusivealloysE90. cheers for kimchi power!!
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      04-11-2008, 06:57 PM   #50
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So I came across this rims/tires. Do you think it will fit? Yes, it is 5x120.

Rims - SSR GT3

20"x8.5" Offset 43 (Front)
20"x9.5" Offset 43 (Rear)


Tires - Pirelli PZero Nero

245/30/20 (Front)
285/25/20 (Rear)
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      04-11-2008, 10:01 PM   #51
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anybody?
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      04-11-2008, 11:30 PM   #52
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Quote:
Originally Posted by hun77777 View Post
So I came across this rims/tires. Do you think it will fit? Yes, it is 5x120.

Rims - SSR GT3

20"x8.5" Offset 43 (Front)
20"x9.5" Offset 43 (Rear)


Tires - Pirelli PZero Nero

245/30/20 (Front)
285/25/20 (Rear)
It'll fit but fitment might be tight; you may need to run spacers front & rear. Most of the 20" fitments I've looked at are showing offsets of 35ET or less.
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      04-11-2008, 11:42 PM   #53
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I thought higher the offset, more sit flush with fenders, no?

Say, if I put 5 or 10 mm spacers, which makes the offset 33~38, don't you think it will stick out and rub on fenders?

Is 43 offset too much for E92 to handle? I don't want rims touching control arms nor to roll/shave the fenders. So these set up won't fit without doing any of these?

david
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      04-12-2008, 01:34 AM   #54
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Quote:
Originally Posted by hun77777 View Post
I thought higher the offset, more sit flush with fenders, no?

Say, if I put 5 or 10 mm spacers, which makes the offset 33~38, don't you think it will stick out and rub on fenders?

Is 43 offset too much for E92 to handle? I don't want rims touching control arms nor to roll/shave the fenders. So these set up won't fit without doing any of these?

david
For more info about offset, look at this http://www.tirerack.com/wheels/tech/...jsp?techid=101

There's a ton of info on Tirerack's site that's useful in educating yourself about wheel fitments. In addition, you can do test fitments on the site by choosing a vehicle and seeing how the wheels & tires look on the car.

The original fitment for a bone-stock E9x-series is 7x16 wheel w/ a 205-55-16 tire. Going to 20" wheels means going to a Plus 4 fitment. There will be a number of compromises for the look you want to achieve.
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      04-12-2008, 03:11 AM   #55
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Well, while I do appreciate your help, I must say I do understand what +/- offset means. I just wanted to know these specific setup will work on E92 due to high offset.

It seems that tireracks's site has variety of rims/tires choice for 335i sport package and offsets scatter from anywhere inbetween 30 to 40 which is very close to the offset that I mentioned above. As I put down on the #1 post, I know that these set up will work if offset is right.

I just wanted to be extra curious/careful because, 1) E90 and E92 has 5mm difference in rear fender width, and 2) if I do decide to buy, it will be several thousand dollars I'm talking.

So my question is... will these setup work with just merely spacer?
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      04-13-2008, 11:27 PM   #56
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anybody? joeb?
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      04-15-2008, 06:19 PM   #57
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hm..
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      04-15-2008, 06:47 PM   #58
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I am currently running with on my E92 328i:

19x8.5 et35: Kumho SPT 235/35/19
19x9.5 et35 Kumho SPT 265/30/19

- I am running on H&R sport springs and no fenders rolled
- NO RUBBING even with 4 people in car w/ full tank of gas and stuff in the boot
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      04-15-2008, 09:12 PM   #59
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Quote:
Originally Posted by ehhhwik View Post
I am currently running with on my E92 328i:

19x8.5 et35: Kumho SPT 235/35/19
19x9.5 et35 Kumho SPT 265/30/19

- I am running on H&R sport springs and no fenders rolled
- NO RUBBING even with 4 people in car w/ full tank of gas and stuff in the boot
Thanks for the update. Keep them more coming...
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      04-16-2008, 09:10 AM   #60
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I used the calculator above but...

I'll stick with the OE Michelin rft's but change the wheels to 18x8 front and 18x9 rear. All wheels have offset of 38. According to the calculator the fronts will tuck in 4mm and the rears will extend 5mm. Anyone see any problems with this approach on a stock ride height E92?
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      04-16-2008, 12:05 PM   #61
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Yeah. The calculator above is not correct in lot of occassion. That's why I made this thread to see some real result and hear some opinions.

As far as your offset is rediculous, I think you should be fine.

David
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      04-22-2008, 12:44 PM   #62
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updated. any correction or any more opinions?
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      05-06-2008, 07:11 AM   #63
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up
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      05-06-2008, 01:29 PM   #64
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im really hoping i wont rub with my 275s in the rear on my 19x10 iforged
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      05-06-2008, 11:09 PM   #65
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if iforged is made for your vehicle spec, chance is really slim...
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      05-07-2008, 12:05 AM   #66
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Quote:
Originally Posted by hun77777 View Post
So I came across this rims/tires. Do you think it will fit? Yes, it is 5x120.

Rims - SSR GT3

20"x8.5" Offset 43 (Front)
20"x9.5" Offset 43 (Rear)


Tires - Pirelli PZero Nero

245/30/20 (Front)
285/25/20 (Rear)
Yes that will work fine.
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