I went to walmart a month ago and told me that they could not put a passenger car tire on a trailer rim....But come guys after the Goodyear deal with ford you know they are going to do all then can to avoid that again. I run Marathons on my Allison and I have a slow leak in one of the tires and I never run under 65 and I have 35 lbs before the leak down I will boost the pressure up some now but I have never had a problem...there 7 years old now.