I had truoble with mixing bias and radials on my old Duster until I found the "new" idler arm had worn out very quickly
Once I fixed that it didn't matter which tires were on the front or back on the street

I would ask if this pro street car is a street/strip of a street/road track? Do you take the street corner turn at 20- 30 MPH or slicing the asphalt like running from the cops? If you have a spool, I'll figure you are conservative on the turns and high speed maneuvers. It's like everything else, proceed with moderation when other than going straight.