I bought a 4320 compact this weekend but wont pick the tractor up until next weekend. I'm planning to load the rear tires and had considered widening the rear tires. Does anyone know the stock width of the 4320 compact with R4 tires? Is the easiest way to widen these tires just switch sides? if so what is width with them switched around? I want to make sure it will still fit on the trailer. Thanks for the help.