From
http://www.purestockdrags.com/p/rules.html here are the tire and wheel rules.
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Tires and Wheels:
Reproduction tires or radial tires only. No soft compound tires of any kind allowed. Retread tires are not allowed. Use of traction compounds or rubber-softening chemicals on tires is strictly prohibited. Suspicious tires will be durometered. You are allowed to run tires one size over stock, with G70s being the largest size allowed for cars with 70-series tires, and G60s the largest allowed for cars that came with 60-series tires. All four tires must be the same size. No 60-series tires will be allowed unless they were originally available for the car's year and model. 60-series tires must be run on 15-inch rims as they were originally. <span style="font-weight: bold">Cars built before the introduction of 70-series Polyglas or Wide Ovals are allowed to upgrade to 70-series of appropriate size. Factory wheels only. Wheels must be correct in size, offset, and style for the car's make, model, and year.</span> All four wheels must be the same size and offset.
EXCESSIVELY WORN OR BALD TIRES ARE STRICTLY PROHIBITED! TIRES CANNOT BE WORN DOWN TO THE TREAD WEAR BAR INDICATORS.</div></div>
Fact is, the reproduction Polyglas and Wide Oval bias ply tires are worlds better than anything that was available back when they were original equipment. They almost border on the same quality as having slicks did back in the day. Call Rusty Small if you want to talk tires. Cell phone is 816-654-3400. He is your best bet when it comes to reproduction Goodyears, and he even delivers to the Pure Stock Drags.