[Kevan]

We race allsorts in 1/32 with rubber tyres (not foam or silicone or urethane).

The fastest anyone can get round our club track with a plastic chassis is 5.8 seconds

Fibreglass Allslot f1's can do 5.6 seconds with 14mm wide rears

Mack chassis (or modified Eurosports with front wheels) can do 5.5 seconds

That's why we classified all plastic chassis in our Standard classes and everything else in the Scratch/Open classes

Basic Falcon powered JK X32 with fresh dry ungooped foams can get round in 4.8 seconds

...I wouldn't like to guess how quick a proper BSCRA car could get round with fresh dry ungooped foams