Inspirational 49++ 700 X 32C Tires. The 700c designation means it was the third version of a nominal 700mm wheel, the first two being 700a and 700b. Unfollow 700 x 32c tires to stop getting updates on your ebay feed. You'll receive email and feed alerts when new items arrive. The 700 part describes the rim they fit, signifying that the diameter of the wheel/rim is nominally 700 millimeters.