The bigger tires go over obstacles better than small tires. Small tires are lighter and spin faster. You can’t get a big giant tire to move under a body or turn as sharp as a small tire. That is of corse giver the same suspension. It’s a real test and tune thing.
With portals some times the...
The rules changed after 2022.
I think this is the new rule sheet. Double check
But anytime you compete in anything get the full rules sheet or booklet and read it completely.
https://thecrawlspaceco.com/sorrca-rules