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      05-01-2012, 10:43 AM   #1
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F30 328i wheels offset ?

Dear Brother,

I want to change to 19'x8.5J, which is the best Front & Rear offset, Thanks!

Alex
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      05-01-2012, 10:55 AM   #2
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Standard offsets



F30:

18"
8Jx18
ET 34

19"
Front 8Jx19 ET:36
Rear 8,5Jx19 ET:47

20"
Front 8Jx20 ET:36
Rear 8,5Jx20 ET:47
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      05-01-2012, 11:06 AM   #3
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Quote:
Originally Posted by E90Fleet View Post
Standard offsets



F30:

18"
8Jx18
ET 34

19"
Front 8Jx19 ET:36
Rear 8,5Jx19 ET:47

20"
Front 8Jx20 ET:36
Rear 8,5Jx20 ET:47
Thanks buddy, do u know the pcd?
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      05-01-2012, 12:30 PM   #4
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I believe its the same as the E90 , 5x120
But i cannot confirm that.
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      05-01-2012, 12:51 PM   #5
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Kinda noob question here but could someone explain what this "offset" is?
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      05-01-2012, 11:19 PM   #6
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Quote:
Originally Posted by J1n View Post
Kinda noob question here but could someone explain what this "offset" is?
source Tirerack

http://www.tirerack.com/wheels/tech/...jsp?techid=101

The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types (measured in millimeters).*

Zero Offset

The hub mounting surface is even with the centerline of the wheel.

Positive

The hub mounting surface is toward the front or wheel side of the wheel. Positive offset wheels are generally found on front wheel drive cars and newer rear drive cars.

Negative

The hub mounting surface is toward the back or brake side of the wheels centerline. "Deep dish" wheels are typically a negative offset.

If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset also changes numerically. If the offset were to stay the same while you added width, the additional width would be split evenly between the inside and outside. For most cars, this won't work correctly. We have test fitted thousands of different vehicles for proper fitment. Our extensive database allows our sales staff to offer you the perfect fit for your vehicle.
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      05-02-2012, 01:41 AM   #7
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Thanks for that. So every wheel will have different offsets ?
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      05-15-2012, 02:51 PM   #8
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You can run the 19x8.5 ET35 up front and the 19x9.5 ET40-45 in the rear without any issues on the F30!
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      09-05-2013, 01:26 PM   #9
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what about et25 with 19x8.5 will that fit??? what tire size do I need?
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      09-11-2013, 04:12 PM   #10
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Quote:
Originally Posted by **********s.com View Post
You can run the 19x8.5 ET35 up front and the 19x9.5 ET40-45 in the rear without any issues on the F30!
Have you tried 245/45 for front ?
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      06-30-2014, 10:54 PM   #11
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Help please!!!

what's the correct off set if I want to put 19x9 front and 19x9.5 rear on a F30(2014 328i)???

Thank you!
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      07-01-2014, 12:10 AM   #12
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Quote:
Originally Posted by CAL_F30-M View Post
what's the correct off set if I want to put 19x9 front and 19x9.5 rear on a F30(2014 328i)???
Around 35 front and 40 rear.
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      07-01-2014, 02:57 AM   #13
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I will get 18" with 8-8.5 wide & 18" 8-9 wide depending on wheel and I have 12mm & 15mm wheel spacers.. any idea what wheel & what offset to use with spacers
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      07-01-2014, 03:12 AM   #14
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Quote:
Originally Posted by rustyminded View Post
I will get 18" with 8-8.5 wide & 18" 8-9 wide depending on wheel and I have 12mm & 15mm wheel spacers.. any idea what wheel & what offset to use with spacers
Why do you want to use spacers?

If you look for new wheels isn't it better to find a direct fit for F30?
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      07-01-2014, 04:16 AM   #15
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Quote:
Originally Posted by ss0803 View Post
Why do you want to use spacers?

If you look for new wheels isn't it better to find a direct fit for F30?
First time to get an aftermarket wheel, I want aggressive look with normal tires because of the availability of tires in my country 18" are good but 19 no good
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      07-01-2014, 06:21 AM   #16
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Quote:
Originally Posted by rustyminded View Post
Quote:
Originally Posted by ss0803 View Post
Quote:
Originally Posted by rustyminded View Post
I will get 18" with 8-8.5 wide & 18" 8-9 wide depending on wheel and I have 12mm & 15mm wheel spacers.. any idea what wheel & what offset to use with spacers
Why do you want to use spacers?

If you look for new wheels isn't it better to find a direct fit for F30?
First time to get an aftermarket wheel, I want aggressive look with normal tires because of the availability of tires in my country 18" are good but 19 no good
Spacers are often used to give a car a more aggressive stance with existing wheels.

If you buy new aftermarket wheels you can look for wheels with aggressive offsets directly instead of buying wheels that need spacers to result in a wide stance on F30.

An example of a staggered setup for F30 without need of spacers:
F: 8.5x18" ET35
R: 9.5x18" ET40

1/2" wheel width corresponds to 6mm in offset, which means that a 8" ET29 wheel will look similar to a 8.5" ET35.
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      07-01-2014, 06:42 AM   #17
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Quote:
Originally Posted by ss0803 View Post
Spacers are often used to give a car a more aggressive stance with existing wheels.

If you buy new aftermarket wheels you can look for wheels with aggressive offsets directly instead of buying wheels that need spacers to result in a wide stance on F30.

An example of a staggered setup for F30 without need of spacers:
F: 8.5x18" ET35
R: 9.5x18" ET40

1/2" wheel width corresponds to 6mm in offset, which means that a 8" ET29 wheel will look similar to a 8.5" ET35.
That's a lot of info for me lol, what's the offset ? sorry for my ignorance in wheels
the most important thing that I can get 245 & 255 so for instance if i have 9.5 won't it be too much for 255 wide as the rims will be out ? & i don't want that, I want aggressive look while protecting the wheels from road as well
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      07-01-2014, 07:17 AM   #18
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Quote:
Originally Posted by ss0803 View Post
Spacers are often used to give a car a more aggressive stance with existing wheels.

If you buy new aftermarket wheels you can look for wheels with aggressive offsets directly instead of buying wheels that need spacers to result in a wide stance on F30.

An example of a staggered setup for F30 without need of spacers:
F: 8.5x18" ET35
R: 9.5x18" ET40

1/2" wheel width corresponds to 6mm in offset, which means that a 8" ET29 wheel will look similar to a 8.5" ET35.

for your point of view is correctly fitted this setup ? :

F: 8.5x19" ET35
R: 9.5x19" ET35

http://www.ebay.it/itm/111368685264?...84.m1436.l2649
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      07-01-2014, 07:29 AM   #19
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Quote:
Originally Posted by rustyminded View Post
That's a lot of info for me lol, what's the offset ? sorry for my ignorance in wheels
the most important thing that I can get 245 & 255 so for instance if i have 9.5 won't it be too much for 255 wide as the rims will be out ? & i don't want that, I want aggressive look while protecting the wheels from road as well
Offset, also named ET, explain where the hub of the wheel is located relative to the centerline of the wheel. Offset in combination with wheel width is most important when looking for new wheels.

Lower offset results in wider stance.

If you like 245 front and 255 rear tires the most narrow wheels you can choose are 8" front and 8.5" rear. With those wheel and tire widths you can search for wheels with front offset around 30 and rear around 35.

F: 8x18" ET30, 245/40-19 (1% shorter than OEM)
R: 8.5x18" ET35, 255/40-19 (OEM F30 tire size)

If you find wheels you like with higher offset you may fit them with use of spacers.
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      07-01-2014, 07:34 AM   #20
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Quote:
Originally Posted by franzzz View Post
for your point of view is correctly fitted this setup ? :

F: 8.5x19" ET35
R: 9.5x19" ET35
The rear is aggressive for F30, but it works with slightly stretched tires.

Here is a member with very similar setup: f30.bimmerpost.com
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      07-01-2014, 07:41 AM   #21
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Quote:
Originally Posted by ss0803 View Post
The rear is aggressive for F30, but it works with slightly stretched tires.

Here is a member with very similar setup: f30.bimmerpost.com
Ok tnx !!!

I try to find a rear 9JX19 ET 35
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      07-01-2014, 10:23 AM   #22
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Quote:
Originally Posted by ss0803 View Post
Offset, also named ET, explain where the hub of the wheel is located relative to the centerline of the wheel. Offset in combination with wheel width is most important when looking for new wheels.

Lower offset results in wider stance.

If you like 245 front and 255 rear tires the most narrow wheels you can choose are 8" front and 8.5" rear. With those wheel and tire widths you can search for wheels with front offset around 30 and rear around 35.

F: 8x18" ET30, 245/40-19 (1% shorter than OEM)
R: 8.5x18" ET35, 255/40-19 (OEM F30 tire size)

If you find wheels you like with higher offset you may fit them with use of spacers.
Great !! I can't go lower than 45 side because of our roads, so will i be able to fit wheel spacers with this setup or it will rub ?
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