I have not put a track on yet. Apparently 1.5" fitsHey Ottawa Joe. Did you make the swap yet? I am in Aylmer QC and have a 08 tz1 and like you want a taller track. Have you run a 1.5 without any clearance issues? What about two riders with some gear and the suspension maxed out from hitting something? Is there potential to damage the rad and cooling tubes?