specification for a car in Class 7( c).
7.1312. Class 2 Vehicles must use cross-ply tyres( which need not be listed in Ch. 8 App. 4 Lists 1 or 2 but which must not be of Grip Town & Country or Dual Purpose pattern).
Appendix 4 – Technical Regulations- Car Trials Formula
3. Safety
3.1. Vehicles must comply with Construction and Use Regulations and be fitted with safety belts if appropriate. The following are recommended:
a. Safety roll-over bar to safety criteria Ch. 7 App. 3 Art. 22. b. The wearing of seat belts is optional when fitted to the Vehicle.
c. 3.2. At single site Events handheld fire extinguishers to a level of safety criteria specified in Ch. 7 App. 6 Art. 3. are recommended and which are accessible to the crew( note a 1.75ltr minimum for AFFF or 2x1ltr AFFF or 2x1kg Powder is permitted).
3.3. At Events which utilise the public highway handheld fire extinguishers to a level of safety specified in Ch. 7 App. 6 Art. 3. are mandatory and which are accessible to the crew( note a 1.75ltr minimum for AFFF or 2x1ltr AFFF or 2x1kg Powder is permitted).
Appendix 4 – Technical Regulations – Car Trials Formula
5. Engine 5.2. If forced induction is used, no the coefficient will apply be 1.4:1 unless specified in the Official Documents.
Motorsport UK National Competition Rules 2026 Edition 4
Chapter 22 Appendix 17- Trials( Chapter 17) 817