i have a few old john deeres,we are building A to pull and iam trying to decide which tires to put on it, ive got a like new set of 14.9x38 safemarks 23 degree tread, a set of 14.9x38 goodyear dyna torques 45 degree tread that have like 60% tread left, slightly rd wore and a set of 15.5x38 firestone f&R all traction 23 degree tread 45% tread left, slightly rd wore. my A has front cut tires that iam not allowed to run in div 2 so iam selling them. out of the 3 sets of tires i have, what would be best for my A, it will pull 1st gear sometimes 2nd gear where permitted. will make about 60 hp