Funnily enough I have been speaking with Paul from the BRCA today as I noticed a slight difference between the rules and the entry forms, the control tyre for 2wd is on the driven wheels, and for 4wd it is the REAR axle only,this is why according to Paul.....
"Rule 23.11 was changed last year to accommodate the possibility (although unlikely) of a manufacturer making a 2WD car with front wheels driving. Therefore it was changed to "driven axle on 2WD". (There can only be one driven axle on 2WD)."
23.11 At Sanctioned events two types of control tyre will be adopted for the driven axle on 2WD cars and the rear axle of 4WD cars. The choice of tyres for the non-driven axle on 2WD cars and the front axle on 4WD cars will be free, subject to conforming to rule 23.7. The Section committee will approve the choice of control tyres. The make and type of the control tyres to be used at National events will be specified on the National Championship entry form and also in the confirmation document. There will be no restriction on the number or compound of tyres used.
So look out for a free choice on the front axles of 4wd's :-)
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