I replaced my tires with the Goodyear Flight Custom III's with Leakguard tubes all bought at Desser. I have been very happy with the performance to date so far. They seem to be wearing incredibly well. I will have to look at my log book but I replaced them somewhere around 300 hours and now have 100 hours on the Goodyears and notice a huge difference. I also have noticed that the new tubes don't need air nearly as much as the stock ones from Van's do.