Even though the series celebrates and has fun with "lemons" with the $500 cap on your vehicle, it also recognizes the importance of tires and puts no limit on spending, only on minimum treadwear rating (190). This allows everyone to choose tires that will perform best and be up for the endurance challenge. Our personal favorites from both a performance and economical standpoint were the P245/50ZR16 BFGoodrich g-Force Sports on all four corners. Suffice it to say, grip was never an issue. We're planning to use the same set at the upcoming event at Buttonwillow Raceway Park in Buttonwillow, California.