[Rob H]

We have started to run a restricted motor with stock gearing class for the TT-01. I run rubbers for grip on the modified cars with some success but I am getting beat constantly on the restricted class as the car is too slow.

Have worked out that this is mainly due to the rolling radius of my rubbers being less than the foams some of the other guys are running so my car is down on top end.

Can anyone recommend or know of a tyre combo has the greatest diaimeter / rolling radiius, grip on the track we are using is not an issue.