after putting cal-tracs on my 63 belvedere 3400lbs,29.5x9x15 M/T bias 14psi,the car went left first pass right 2nd pass.I just figured it was the track as I had never been there before,anyway lost 1st rd and just loaded car up a few weeks later the track posted picks and there was a good pic of my car just squashing the [censored] out of the slicks.the moral of this is you need someone or or video to see what is going on.I haven't been able to get back to the track and start adjusting shocks,WORK sucks.