Preventative maintenance.
If you have never sat on a lonely hot runway with a blown tire with no support available, you will not enjoy the experience! Change it and buy the best tube available!
I agree with Vern. Recently, an arriving Cherokee at our airport blew a main tire and sat for a while on the runway before FBO and fire department could assist in movement. Not a fun time. Could have been a bigger hassle at a rural unstaffed airport.
While on a cross-country trip, I got a flat nosewheel on landing, apparently due to a fold in the tube that had been there from the first tire installation. (I think I had about 150 hours, and unknown number of landings, at the time.) The good folks (FBO manager and a pilot friend of his) at KUBX, the Cuba, Missouri airport worked rapidly to help me dismount the tire, get to a tire shop for a tube repair, and back underway in about 3.5 hours. But, it could have been a show stopper had the nose tire not been reusable. The RV-sized nosewheel tire, particularly, is not a common FBO item.
I think of tires as a vulnerable single-point-of-failure, and I dont hesitate to repair one that looks like trouble. Unless you fly only locally, always carry a nose and main tire and tube, or can count on finding another RV owner during your travels, I recommend erring on the side of preventative replacement. Even with small odds of a blowout, the cost of an overnight stay, overnight shipping of a tire and/or tire, and losing time on an overnight trip, (not to mention possible wheelpant damage or worse), makes replacement the economically sound choice.