we ran the wheels with AKA Enduros today, 3-5 min heats and the main. the only problem today was about 3/8th of an inch of the inside of one of the rear tires came out. the main was a 10 min with no problem... i'm loving them so far. I checked between each heat and had to snug a little but overall it was a great day....also it was a LRP X11 13.5 BL on a WMD lcg slash 2wd