We have a 1995 Mallard model 19n (21ft)by Fleetwood, dual axles.It's time to buy new tires. What brand do you like? I just started the online research and finding a lot of mixed reviews.
I put Goodyear Marathon on about 6 years ago. I use 303 for UV protection and cover when in storage. I only put on about 1000 miles a year and they're still like new.