You can drive a small distance at a reduced speed until you can get to a safe place and then change the bad tire, if there is a blow out you will hear the bang and you will hear the tire ripping apart, the RV will also be lower on that side.
Your RV should have a spare tire and you should be capable of changing it on the road, get a good 3 foot braker bar with an extension and the correct deep socket, a good strong bottle jack and a jack stand and a couple of wheel chocks.
Always chock one opposite tire and use the jack stand, safety first, also take some boards to set the bottle jack and the stand, and set the parking brake.
Should a tire blow, change it and when you reach the tire store have the mechanic check the tire next to the blown one by removing it and inspecting the side walls visually, if OK have them remount and re balance.
Always check the tire pressure on all tires, there are tire chucks that are longer and are specific for dually's, proper inflation is very important.
navegator