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.
Replace OEM with Maxxis M8008 Spring 2014. One tread separated while driving fall 2016 and caused some damage to the TT. I replaced all 4 with Carlisle Radial HD Spring 2017. So far so good.