My 76 barth is in need of at least a couple of tires. When I took a closer look, when the front two tires were replaced the wheels were also replaced. The back wheels and tires are still running tubes. Does anyone know if there is a cost effective way to retrofit my old wheels to tubeless or should I try and find replacement wheels? I am currently running the 7.50x16 tires. Any help would be great!

Most wheels are designed for tubeless tires but sometimes folks will install tubes to overcome slow leaks which are common on old rims. They tend to get rusty over the years and this leads to slow leaks. Take your RV to any truck tire store and they can tell you just by looking if your rim was designed for tubeless or tubes.

Hope this helps,

Our 76/77 had rims that were designed for tubes only--- this can be easlly seen once the tire and tube are removed, as the hole for the tube through the rim is not round, for the older tube type rim.
There are adapters that will cover the oblong hole but I have received inconsistent advice on whether to use them. In the end I bought new rims for the front and run the older style on the rear.

Bud

Pay attention to the holes where the lug nuts seat too. If too worn you might just want to replace the wheels and probably never have to worry about them again. Working on my bus i found a steel wheel that had a crack. Not knowing how old any of them are,(could be original from 1968) but knowing that they have been on there for a long time, i decided to buy 6 new ones......about 100 bucks apiece for 8.25 X 22.5s. One less thing to worry about, Gonna be able to sleep better at night now.