Ok, as it stands, I know little about this subject. I am starting this thread so others like me will be able to find all they need in one place. I understand that spidertrax and all pro seem to be the brands to buy. Please discuss the pros and cons along with any experiences regarding the use of wheel spacers, including success (better wheel clearance, etc.) and failures (ball joint problems, etc.). Hopefully this helps others considering wheel spacers other than myself.