CACC Rule Change Proposal
RCP-2023-1222

11.1.1.5 Hill Climb participants in Max Class should make note of the tire TW rating exception found in section 18.7.2 of this document.

18.7.2.7.1 For Hill Climb events, Max class cars which have safety equipment that meets the CACC GCR Roll Cage Specifications will be allowed to run DOT tires from 199TW to 40TW.

This option is ONLY for Hill Climb events and Max class is currently regulated to 200TW tires.
The Unlimited Classes are going to be very full (hence the decision to incorporate an Unlimited 3 class which is another rule change request). This move to allow Max class cars with the appropriate safety equipment and the appropriate setup to run on Hoosier A7's, for example, in a class which may be far more appropriate for their car than an Unlimited class. There is no loss of safety as, while these cars meet Max classification, they have safety equipment that meets the CACC GCR Roll Cage Specifications just as the Unlimited class.
Cars that DO NOT have safety equipment that meets the CACC GCR Roll Cage Specifications in Max Class will be limited to 200TW tires within the same class. This is a potential disadvantage to those drivers; it will also hopefully be an incentive to put a full cage in their car.