Quote:
Originally Posted by Expert@ApexRaceParts
Hi there,
As far as spacers go, for most modern BMWs you will not run into any issues as long as you avoid spacers larger than 5mm and smaller than 12mm. This is due to the fact that most modern BMWs have a 10mm hub lip, so any spacers larger than 5mm or smaller than 12mm do not typically have enough material to mount flush with both the hub lip and the wheel. This is why most negative things you hear from BMW owners running spacers typically are using a 10mm, which can increase wheel hardware stress and will have a higher chance of increasing NVH. Other than that, as long as you are also using the correct extended hardware with said spacers, you shouldn't have any issues.
Camber plates are one of the best modifications you can do if you plan on taking the car to the track. Since most modern BMWs do not have any way to adjust front negative camber from the factory, camber plates are typically the best mod to get additional front negative camber dialed-in. Not only will camber plates help you run a wider/more aggressive wheel/tire setup but they will also greatly improve the car's turn-in response and handling feel. When using more aggressive track-focused tire compounds, additional negative camber will also help avoid prematurely wearing the outer shoulders of your tires.
For street use, as long as you stay under -2.5 degrees up front, you should not notice any camber-related inner-tire wear or adverse driving characteristics, such as tramlining.
Hope this helps clarify those two topics! If you have any additional questions, please do not hesitate to reach out! 
-Geirsen |
Great info. Thanks for the reply!