[rohrmann]

On our 2012 3402RL, it was delivered with the ST 235/80R16 load range E Marathons. After going through five of them due to various failures in less than one year we upgraded to the Goodyear G614's. This worked, as the G614's were an option from the factory, using the same wheels that the rig came with, and with the addition of metal valve stems, the tires were the answer for the tire failures with the E range Chinese tires. There is plenty of space between the tires, so this was never a question, and I'm pretty sure most Montana's come with axles spaced far enough apart to not be a problem using either the 80 series or the 85 series tires.