The car comes in right at 3200 lbs with driver. The 2.3 to 2.5 60' times are due to the limited tire size that can be put on the old Vette. The street tires are a joke off the line. If he was running alone you could hear his tires squealing when he went into third gear. From our street tests these slicks really hold well. That is why we are hoping the parts don't start breaking until we get a few good passes in.