NASA has the rules. Waiting on them them to post. No "have to" changes proposed. So tires should be be it if NASA doesn't add anything.
Did the size get changed ?
Tony Nadalin
2018 SOVREN Big Bore Champion
2015 SCCA Oregon Region VP3 Champion
2012 ICSCC ITE Class Champion
FFR MkII Challenge Car, Spec Racer, Street Legal, SCCA, ICSCC and NASA Racing
818R Build in progress