JMHO, but I don't like tire rules, my opinion is it locks you to whatever the market will bear, as for as price. Tires would be my last choice, especially since there are so many CAR OWNERS, with a purple ring around their toilet seat, but I know, you can't eat all them tires, so here's what I'd do, at least till you get this series off TDC, or BDC, which ever, lighten up on the tires, hell, let em use up what they got, don't make no difference, as long as you got 4 on the car, you're good to go. I like things simple, and I have a feeling that's what you're trying to do, I'd open the tires for now, get er goin, then worry about them! Bob