Just purchased a new set of BBS CH-R 20" x9 +24 and 20X 10.5 +24 running on 255/30/20 and 285/30/20. The fit is good, but I feel like the front wheels need to come out a few mm, and maybe even the rears. I was running the stock OEM 19" on a 2010 coupe with 12 mm and 15mm, which seemed to have a better stance. Can I add a 3" spacer in the front and no spacer in the rear with out problems? One recommendation was a 3mm and 5mm spacer. But there was also mention of potential problems with the larger CH-R wheels. Any advice would be greatly appreciated.
Originally Posted by rzm3
A great article by TMS... copied from http://www.turnermotorsport.com/html...cer_tech.shtml
This is a thread that we've been thinking of for a long time. We also created a page on our website
with the same information (more to come!). It consists of everything Turner Motorsport has learned about wheel spacers for BMWs. A lot of this info also applies to other makes as well. It's a very long and comprehensive collection of data, tips, and technical info and it's a bit Turner-centric but should prove useful to everyone. If you should have any further questions, please call or e-mail us.
Why Use Wheel Spacers?
Once you know WHY you need spacers, you can figure out what size to use...
- Appearance. You want to push the wheels out for a better stance and more aggressive look. This is totally subjective to your personal tastes. And we can't tell you what to like...
- Clearance. Many wheels are not compatible with big brake kits. The spoke of the wheel will scrape the new brake caliper and you need a wheel spacer to push the wheel spoke away from the caliper.
- Correction. You may have bought a set of wheels that don't have the correct offset for your car. The offset may be too high, resulting in the wheels sitting too far inward. This is both ugly and incorrect as the tire can now rub on the inside wheel well, or on suspension components, etc. A wheel spacer will push the wheel out and 'correct' the offset.
- Handling. By spacing the wheels further apart, you can make the car more stable and corner better. You can gain a similar effect as adding a wider wheel without the added weight and expense.