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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Need some advice on spacers



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      03-26-2015, 10:37 AM   #1
Alex12
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Need some advice on spacers

Okay guys I have a 2008 328i on h&r race springs with style 189 wheels,
Tire sizes are rears 255/35-18 & fronts 225/40-18, would a 15mm spacer fit in the front & 18mm in the back?
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      03-26-2015, 10:57 AM   #2
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Quote:
Originally Posted by Alex12 View Post
Okay guys I have a 2008 328i on h&r race springs with style 189 wheels,
Tire sizes are rears 255/35-18 & fronts 225/40-18, would a 15mm spacer fit in the front & 18mm in the back?
There's a great basic test/trick you can do:

http://www.turnermotorsport.com/t-wheel-spacers.aspx

There's also a more simple version of taking a piece of string, taping it to the top of the fender (center) then taping a penny to the bottom to the center of the wheel hub with the wheel still installed. From there, basic measurement and math is required to calculate the desired spacer needed.

Edit: For rears, have a few chubby friends sit in the back seat to give you the extreme dips of driving to avoid inner fender rubbing* Thanks for the below post for reminding me.
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      03-26-2015, 10:59 AM   #3
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Your best bet is to measure it as most posts will describe when looking at spacers. I think 12 front 15 rear would be a safer bet but might get rub during dips. But then again it's better that you measure amount of space you have for spacers.
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      03-28-2015, 09:30 AM   #4
Alex12
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Alright but no one has ran a 18mm in the back yet??
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