Last year we had to replace 2 of our original tires on a single trip. I purchased 2 Goodyear Marathon ST tires. I need to purchase two more now to get rid of the junk tires that came with the trailer (purchased 2 years ago). I have been reading about the Endurance and have a stupid question. Since this is just being towed, can I put 2 different tires on? If so, is there a better placement? I.E. both Endurance on the front axle, both Marathon on the rear?