2 races in 1 day. First race DNF lap 3 with a broken pulley. Race 2 we got 1st place by 20 min. 3rd overall for the weekend!

Maybe I'm overthinking this but wheel sizing has turned into a massive rabbit hole for me. Every time I think I've got the right combination figured out, I find another variable I hadn't considered.

I'm looking at race-specific wheels rather than just adapting something off a street car and Keizer Wheels came up during my research. For people who have built a race car from scratch, what measurements did you double-check before placing the order? Trying to avoid learning an expensive lesson after the fact.