No restrictions other than they have to fit the car properly. i.e. correct wheels and sizes.dcb said:This is for JFW.
What are the restrictions - what's legal - with rain tires?
Yes, right after that the "Group 4 Nazis" had me write into the rules that you couldn't groove the tires.Glenn Stephens said:In my class we are supposed to use Dunlop 204 tires. I have always assumed that is rain or shine. Is that true?
Dunlop 204s really really suck in the rain, especially if they have any wear on them.
That reminds me of a story. Back in the heyday of Group 4 (in the 80s), the competition was pretty fierce. The racers had to run the Dunlops and it started to rain. Brian MacEachern cut V grooves in his Dunlops and smoked everybody. His competitors went apoplectic but I think it was just good car prep.