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Running spacers on stock 326M wheels?

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Felixlamb
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Running spacers on stock 326M wheels?

Post by Felixlamb » Wed Mar 22, 2023 4:12 pm

Hey,

I currently have my winter wheels installed, but will be moving back to my summer wheels this weekend. The winter wheels are Style 103s (ET 47) with 225/45/17 tyres.

I'm getting my summer tyres put on this weekend and am getting some fresh tyres too. The wheels are the standard 326Ms (ET 29 front, ET 40 rear) but I'm up-tyring to 235/35/19 front and 265/30/19 rear.

With the winter wheels, I've been running 10mm spacers at the front and 15mm at the rear, and previously when swapping back to the summers I've been taking them off.

However, I wouldn't mind trying to get the wheels more flush, so I'm wondering whether I could just keep the spacers on or if the wheels would then rub.

Does anyone else run a similar set up who could confirm if there would be rubbing?

Cheers!
E89 sDrive20i M Sport

True-Blue
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Running spacers on stock 326M wheels?

Post by True-Blue » Wed Mar 22, 2023 7:19 pm

Personally I think ET 19 is too much for the front on an E89, which is where you’ll be with 10mm spacers

Rears will probably be ok, but I’d hazard a guess that they’ll be very close to the arch lip.
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Previous Z4’s :E89 30i, E89 20i, E85 3.0Si (X4) E85 3.0i, E86 3.0 Si, E85 2.5si, E85 2.5i

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B21
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Running spacers on stock 326M wheels?

Post by B21 » Wed Mar 22, 2023 11:59 pm

Personally I’d keep the front spacers to 5mm if you must…10mm ok on rear May catch on big bumps depending on ride height and rear camber
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard..

Pondrew
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Running spacers on stock 326M wheels?

Post by Pondrew » Thu Mar 23, 2023 12:16 am

All I have to say about spacers is "fulcrum points". They change them. And not for the better! :thumbsup:
All good things come to those who wait. I'm really impatient which explains a lot.

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Felixlamb
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Running spacers on stock 326M wheels?

Post by Felixlamb » Thu Mar 23, 2023 8:55 am

Cheers guys.
Definitely sounds like anything on the front is a no-go then. Out of interest, I compared the proposed set up to B21’s Dropbox doc. Fronts will poke far too much, however the rears do end up quite similar. I’m at standard ride height so it might be ok. Could always use the 10mm spacers instead if there’s major rubbing.

Fronts:
Image

Rears:
Image
E89 sDrive20i M Sport

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