Amongst other changes for 2025, the street touring class is getting reworked! STS, STX, STU, STH and STR are no more!
New for 2025 will be AST, BST, CST, DST, EST and GST. Thankfully, most of them are just replacing the old ST classes but there is one new class which is very exciting.
STH is now GST
STS is now EST
STX is now DST
STR is now CST
STU is now BST
But AST is new! The Miata ND is being taken out of STR/CST and put into AST along with other cars like the NB mazdaspeed miatas and Fiat Spiders.
Check out this video for more details and make sure to check out the 2025 Solo Rules here