Louis, sorry I didn't get back to you earlier. But it looks like you made a wise choice. I bought those same wheels and tires in Jan'13, I bought 5, so if I have to put on the spare it can stay there and the repaired tire will become the spare. We haven't moved yet with them on, but will be on the road probably the end of April. A few stops then on to Mor/ryde for their IS upgrade to go along with the tire/wheel upgrade already done. I've made the comment to several at RW that they are doing a dis-service to them selves and their customers putting Marathons on these units, but have been told it all comes down to dollars and cents (and not common sense).
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top