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M2 Technical Topics > Wheels / Tires -- Sponsored by The Tire Rack > Disadvantage of Adding Spacers to Setup?

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      10-11-2019, 01:22 AM   #1
mscdman
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Disadvantage of Adding Spacers to Setup?

I am adding a winter wheel square set 18x8 ET29 for my winter wheel setup. According to the fitment calculator, the front will be set in from the fender about 12.7mm and the rears 14.4 less. I’m thinking about adding 12.5mm spacers to the front and rear for visual appearance. Aside from being even further from the inside strut, what are the disadvantages of this?

Wondering if I should put 12.5 spacers in front and 14 in rear also...

Last edited by mscdman; 10-11-2019 at 05:08 AM..
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      10-11-2019, 02:03 AM   #2
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Changes scrub radius hence puts more load onto suspension and steering components; effects your insurance premiums; too wide esp at the rear in your case and you will rub tyre outer shoulder and fender
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      10-11-2019, 05:09 AM   #3
mscdman
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Originally Posted by Bee Pee View Post
Changes scrub radius hence puts more load onto suspension and steering components; effects your insurance premiums; too wide esp at the rear in your case and you will rub tyre outer shoulder and fender
Wow - too wide at rear even though I’m only trying to bring out to stock level with these 12.5 spacers and my setup?

Would any size spacer bring it out to look more stock and not cause the rubbing?
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      10-11-2019, 06:15 AM   #4
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I've seen 10mmF & 7.5mmR and they look flush
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      10-11-2019, 06:38 AM   #5
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If it helps, this is what 18x8 et29 looks like. If they are set wider with spacers, I assume the car will throw even more rocks at the rear fenders.

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      10-11-2019, 03:15 PM   #6
mscdman
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Originally Posted by CTSean View Post
If it helps, this is what 18x8 et29 looks like. If they are set wider with spacers, I assume the car will throw even more rocks at the rear fenders.

thanks! That doesn’t look as bad as I thought. I thought 18x8 ET29 would look way sunken in
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      10-13-2019, 03:03 PM   #7
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Quote:
Originally Posted by mscdman View Post
I am adding a winter wheel square set 18x8 ET29 for my winter wheel setup. According to the fitment calculator, the front will be set in from the fender about 12.7mm and the rears 14.4 less. I’m thinking about adding 12.5mm spacers to the front and rear for visual appearance. Aside from being even further from the inside strut, what are the disadvantages of this?

Wondering if I should put 12.5 spacers in front and 14 in rear also...
Rims might be set in a little, but what about the tyre shoulder?

The picture above shows a tyre that is wider for the rim than the summers. That helps fills the gap to arch even with rim set back.

Best get them fitted first then decide if you want spacers.

I put square winters on my old E91 335i. Ended up going for 10mm on the rear only, but again depends on tyre brand as shoulder widths are different even at same stated size.
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