New 45+ 26X9R12 Atv Tires. Cst tires offer innovative technology that's affordable and durable. Click on a brand below to learn more about them and browse. The first number is the height, the second number is the width & the third number is the diameter of rim that it will fit on. This was to replace the polaris pxt tire. 26X9R12 Atv Tires - Trac Gard P350 Radial Tire 26x9r12 C 6 Ply 30581002 The Home Depot The atv tires within this category are all available in the selected size; Cst tires offer innovative technology that's affordable and durable.