How many of you guys use hubcentric wheel spacers to achieve the clearance/stance needed. Mostly concerned about their safety. I presently run ICHEBA V2 15mm in the front and 25mm in the rear for about 2yrs now on my 500+ rwhp FD. Am I taking a risk?

 

slip on spacers are better (with appropriate longer studs)... but bolt on spacers are fine.

I have 30mm bolt ons on my widebody auto-x/track FC (which runs 315 wide r-comps) and they're fine so far.

mine are a bit nicer though. They're made by motorsport-tech.com

I made a thread about this not too long ago:
Using 30mm+ bolt on wheel spacers on the track? - RX7Club.com

 

I'm trying to figure out what I need for my fc , seems hard to figure out

Rotary > Pistons