Yes the contact we run has that lilac stripe and they are 38. We run 10.5 open esc on a huge track.
I have run it only once and didn't have as much as steering I wanted. I did some changes on that race day which make it better still not as I wanted it.
XRAY ::: Set-up Sheet - X10'18
For this Sunday I have made some more changes
XRAY ::: Set-up Sheet - X10'18
(not everything is filled as I haven't decided yet tire diameter/height)
Either it will be perfect or crap