Check the roll out dimensions of both slicks. I had a set that were brand new and very different measurements. Car would launch left. Drove me nuts till I caught it. Also you can play with slick pressures also
Yep. I always roll out all my tires. I know some guys do it with a tape, but that’s not very accurate. When the tire wrinkles, it changes the roll out. More or less pressure changes the roll out. I’ve seen tires that roll out differently with a half a pound of air change, meaning, one tire with a half pound more air would change the roll out more than the other tire with the same pressure change. Wrinkle wall tires do weird things when they wrinkle.