I just picked up 58 lightly used to somewhat worn kart racing tires. There are many that still have life on them. I'm not going to use all of them. I'm willing to sell some for cheap, or I may be willing to barter for stuff. PM me if you're interested. I will sell them for $10 for a set of 2 plus shipping. I believe they are all 4.5" wide, but I can check tomorrow when it's light and warmer. they are off of a Junior Sportsman chassis. I have friends that moved up to a bigger kart, and they had all of these in the garage. A deal was struck. Now they are in my garage, and I won't ever use all of them. These are slicks. I thought they'd make cheap tires for someone needing to put together a bike that is in need of cheap tires. I'll keep 4 and unload the rest. PayPal only. If you're looking for a set of 4, I can work with you.