Julian,
Quite right, and as we converse discussions are taking place allowing the use of treaded racing tyres for next season. Class D was formed to allow tyre and wheel variations thus enabling me to race my wider rimmed 40 but sadly not many people out there want to risk bending their pride and joy, and what with the escalating costs of racing sadly few 40,s come out to play with us!!!!!!
Regards,
GTA Racing.