regarding thruxton and tyres, it's not like the dunlop/goodyear racing tyre, where the circuit is a bigger percentage of their racing programme. it's one race a year across all of their racing activity with gt3/gt4. apparently it's not worth the ballache which is probably an attitude that prevails across the entire series.
it must be not at all viable if they'd rather go to donington twice, look at it that way
