Unbearable Arch Rub!

mr wilks · Post by **mr wilks** » Thu Feb 09, 2017 11:22 pm

Buckz wrote:
mr wilks wrote:
idej_jedi wrote:
235/35/19 - I think I'll try some 225s and see if that helps.
Just re read the whole thread & penny dropped ! You are running a 235 on 8j rim when others are generally on 8.5j so that would stretch the 235 or 225
On a 8j front you can easily go to 215 35 & i'm pretty sure that will cure it
agreed 215 would be bang on with a little bit of stretch.

Nah , itl be fine

no one will even notice

mr wilks · Post by **mr wilks** » Thu Feb 09, 2017 11:25 pm

& don't worry Dan ,

that pic is not of a 215 35 on a 8j rim

Its very possible 225 35 will cure it but id be almost sure 215 would

sars · Post by **sars** » Fri Feb 10, 2017 9:43 am

mr wilks wrote:

Ah that's such a classy look

z4pilot · Post by **z4pilot** » Fri Feb 10, 2017 11:33 am

Handy ET calculator here that allows you to compare your existing numbers with your intended wheels and tells you how much further out (or in) the new wheels will sit in comparison.

For reference, OEM 18 inch Z4 (E85/86) wheels are 8in wide et47 (front) and 8.5 inch wide et50 (rear). 224 M wheels are different widths and offsets (8 inch et27 and 9 inch et30?)

http://www.1010tires.com/Tools/Wheel-Offset-Calculator#

Dav the wheel nut · Post by **Dav the wheel nut** » Fri Feb 10, 2017 11:55 am

z4pilot wrote: 224 M wheels are different widths and offsets (8 inch et27 and 9 inch et30?)

I think you'll find Z4M wheels are 8'' fronts et42 and 9'' rears et30

z4pilot · Post by **z4pilot** » Fri Feb 10, 2017 2:40 pm

Dav the wheel nut wrote:
z4pilot wrote: 224 M wheels are different widths and offsets (8 inch et27 and 9 inch et30?)
I think you'll find Z4M wheels are 8'' fronts et42 and 9'' rears et30

Thanks - wasn't sure, hence the question mark

stevo///m3 · Post by **stevo///m3** » Sun Feb 12, 2017 7:20 pm

When I went to 19s I asked around, Jamie and Andy were both very helpful. 225 width tyres followed, can't remember the offset on mine but 235s were specifically mentioned as possible troublemakers. When I had it all fitted, the 225s looked very close but I've never had any rub. Lowered on Eibachs and M suspension - not sure if that makes any difference mind! You'll get it sorted

Stevo

idej_z4 · Post by **idej_z4** » Mon Feb 20, 2017 4:08 pm

Getting some 215s fitted tomorrow - will feedback on if its stops the rubbing. Fingers crossed!

Z4M-2006 · Post by **Z4M-2006** » Mon Feb 20, 2017 6:47 pm

215's will look skinny i reckon..

You must have a weird offset to have an 8j that needs a 215 to stop problems.. ...

Where did you get the wheels from ?

mr wilks · Post by **mr wilks** » Mon Feb 20, 2017 6:54 pm

Z4M-2006 wrote:215's will look skinny i reckon..

You must have a weird offset to have an 8j that needs a 215 to stop problems.. ...

Where did you get the wheels from ?

Ive had 215s on 8js & they look ok , to cure the fault 225s could well be ok but if it still rubs then expensive to change again to 215s which i would say 99% will cure the rub . the car sits low on those Eibachs , ive seen it in the real & there's just about room for a rizzla

Z4M-2006 · Post by **Z4M-2006** » Mon Feb 20, 2017 7:04 pm

Really....

What tyres are fitted on them as standard on say a 108?

z4pilot · Post by **z4pilot** » Mon Feb 20, 2017 7:20 pm

My solution to CSL arch rub....

8J 18's ET34, so 13mm further out than standard OEM offset, 225 section tyres. No rubbing, slightly better ride quality and the car genuinely feels a bit lighter on it's toes.

Z4M-2006 · Post by **Z4M-2006** » Mon Feb 20, 2017 7:39 pm

This was mine with 8.5j and 235 tyre with 35mm drop.... No rubbing issues at all..

Im convinced the OP's front wheel must have some wacky offset...

mr wilks · Post by **mr wilks** » Mon Feb 20, 2017 7:47 pm

Here's a pic of OPs coupe at Scartop , the black roadster next to it is also running 19s

z4pilot · Post by **z4pilot** » Mon Feb 20, 2017 7:50 pm

Mine on Eibachs, 235's with 8.5J Et38. Rubbed equally on both sides over sharp dips and compressions in the road. Drove me mad and had me driving like Miss Daisy half the time...

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