[Towmaster]

Phil, I believe the classes are <5 litre, 5 to 6 litre & over 6 litre + supercharged. Street tyres for overall champion, slicks for race car class. I'll be running grooved tyres this year but will take slicks for Friday practice. Pete (<5litre), Proc (5 to 6 litre) John (Gt40), Warren & Warwick (racecars) & I (6 litre & over) will all be down for the event. There may be others as well I am not sure.