Recent 30+ 700 X 23 Tires. Unfollow 700 x 23 tires to stop getting updates on your ebay feed. The 23 (also mm) was the size of the tire (more or less the diameter of cross section). Get it as soon as fri, oct 16. Alibaba.com offers 936 700x23 tires products. 700 X 23 Tires - 700 X 23c Tubes Mr Cycling World Tannus 700x23c solid tire installation video.