Not sure what tyres Darren was on, may have been kit, may have been JConcepts, sure he may confirm?
What I do know is that following discussions with Maritime Racing the understanding is that as and when the permanent Off-Road track is built and running (due Autumn 2011

) all three off-road classes (2WD, 4WD and SCT) that ONLY recognised SCT tyres will be allowed!
None of those cheaty 1:8 rallycross tyres but proper 2.2/3.0" SCT tyres, but I'm sure Maritime will confirm as and when they get nearer to the eagerly awaited opening date?