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20inch Profile Problem
20-05-2019, 09:36 AM
Post: #1
20inch Profile Problem
Hi Gents
Can anyone please assist & guide me in the right direction.

I’ve recently purchased 20inch mags & tyres & have them fitted on a E93 330i

Rear tyres are touching the fenders & fronts are rubbing on the inside of the arch.

Wheel size is as follows
Rear: 275/30/20 10.5j
Fronts: 243/30/20 9.5j

Before making the purchase I’ve done some research & to my knowledge this is the recommended profile. Not sure what I’m missing here.

Any help please

[Image: DSC01390_zpsb1ef0d93.jpg.html?sort=3&o=3]Current E36 328i
E92 Coupe
Convertible (97)
Current: VW Polo Playa ('13)
Ex: M-Benz C230K Coupe ('05)
Ex: Audi A3 1.8T ('02)
Ex: Civic Vtec (970
Ex: E36 318i Motorsport
Ex: Toyota Tazz 1.3
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20-05-2019, 09:59 AM
Post: #2
RE: 20inch Profile Problem
If I'm not mistaken, I think those wheels are too wide for the car. I think the stock wheels from factory are 8J and 8.5J, the most you could go on the back are 9.5J and I don't think a profile change will help.

Best bet is to wait for the wheel experts to help, else call someone like Shaheen for advice.

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20-05-2019, 10:02 AM
Post: #3
RE: 20inch Profile Problem
[Image: images (5)_3355753105.jpg]

Current: F10 520D M Sport
Current: Audi A4 B8.5 1.8T
Ex: E92 325i M LCI
Ex: E90 323i Exclusive LCI
Ex: E90 320i Individual LCI
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20-05-2019, 10:23 AM
Post: #4
RE: 20inch Profile Problem
Firstly your profile is wrong, the rear profile aspect needs to be lower then your front

Secondly, whats the offset of your wheels? You have to look at both the width and the offset to get an idea on correct fitment.

Lastly, I had 20's on my e92 and it was lots and lots of work to get fitted, i had to modify fender liners front and rear, roll the arches and modify the bumper carriers, it didnt help that my car was lowered quite a bit
for reference i had 285/25/20 , 10j 35et at the rear
and 245/30/20 9j, 33et upfront
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20-05-2019, 10:45 AM
Post: #5
RE: 20inch Profile Problem
Offsets

current: BMW E92 M3 (bearings could be fcukd)
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Steph745
20-05-2019, 10:52 AM
Post: #6
RE: 20inch Profile Problem
Personally, i think the tyres are oversized, but thats not always the issues ( or the only issue)

if a stock wheel on an E90 is 225/40/18 and 255/35/18, the closest 20in size is 225/30/20 and 265/25/20 or 275/25/20

This is trying to keep within the 3% bigger circumference which is considered acceptable.

The next issue would be the width and offset, going from 8j 35 offset in front to say 9.5j 35 offset(assuming offset remained the same), means the wheel sit almost 18mm closer to both the fender and the suspension parts.

The same applies to the rear if going from 9j to 10.5j, keeping the offset the same.

I am curious to know the offsets of the wheels

No, no, he didn’t slam you, he didn’t bump you, he didn’t nudge you… he *rubbed* you. And rubbin, son, is racin’. – Harry Hogge, Days of Thunder

Current Rides
2007 530d MSport (DP, 76mm exhaust, RK Motion tune, OEM M6 wheels)
2012 X1 2.0D MSport
1996 200 Si Camry
[Image: photo from sashchern_5592516823.jpg]
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20-05-2019, 10:53 AM (This post was last modified: 20-05-2019 10:55 AM by cheslynp.)
Post: #7
20inch Profile Problem
So I’ve just went back & looked @ very old pics of my E92 that had 20’z as well.

Tyre profile was the same 275/30/20 Rears & 245/30/20 Fronts.
There I had no touching or rubbing on the fender liners.

The only difference is the E92 was fitted with 9.5j Rear & 9j fronts.

(20-05-2019 10:52 AM)sash Wrote:  Personally, i think the tyres are oversized, but thats not always the issues ( or the only issue)

if a stock wheel on an E90 is 225/40/18 and 255/35/18, the closest 20in size is 225/30/20 and 265/25/20 or 275/25/20

This is trying to keep within the 3% bigger circumference which is considered acceptable.

The next issue would be the width and offset, going from 8j 35 offset in front to say 9.5j 35 offset(assuming offset remained the same), means the wheel sit almost 18mm closer to both the fender and the suspension parts.

The same applies to the rear if going from 9j to 10.5j, keeping the offset the same.

I am curious to know the offsets of the wheels


I have someone coming over to Roll Rear Fenders. Will update with offset info

[Image: DSC01390_zpsb1ef0d93.jpg.html?sort=3&o=3]Current E36 328i
E92 Coupe
Convertible (97)
Current: VW Polo Playa ('13)
Ex: M-Benz C230K Coupe ('05)
Ex: Audi A3 1.8T ('02)
Ex: Civic Vtec (970
Ex: E36 318i Motorsport
Ex: Toyota Tazz 1.3
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20-05-2019, 11:01 AM
Post: #8
RE: 20inch Profile Problem
offsets are probably also different between your previous set and this one?

No, no, he didn’t slam you, he didn’t bump you, he didn’t nudge you… he *rubbed* you. And rubbin, son, is racin’. – Harry Hogge, Days of Thunder

Current Rides
2007 530d MSport (DP, 76mm exhaust, RK Motion tune, OEM M6 wheels)
2012 X1 2.0D MSport
1996 200 Si Camry
[Image: photo from sashchern_5592516823.jpg]
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