I always use std size tyres as they come in pack ,find it a bit expensive when you have to true them down to a size that would be good for one race.
I have been running 42 front and 40 rears ,usually run a set for qualifiers and then change for the finals.However ,last club meet I used the same set I used for the nats final a month ago.
Just coming to grips with the gear ratios and overdrive etc...
Im enjoying the learning curve though especially with the sharing of ideas and info on the forums.
would like the more experienced guys or even some of the Pro's to give some tips and info to help the rookies understand how they tweek and tune thier cars.