Ok, I got a brand new GP1 and a brand new Gazelle tires with a project bike I picked up (not sure why they bought mis-matched tires), but I want to make a matching set. So basically I'd like to trade one for the other. I am pretty sure they are both 17x2.25 (but I will go to my shop today to make sure). If no one wants to trade, I'd be interested in buying one or the other tires from you! I'd like it the same size!