We were talked into it when we bought our Cougar. Probably would not have happened if not for the fact that we had just had a tire blow and put a hole in the floor under our dinette on the previous TT.
On our first trip out, we picked up a nail and woke up to a flat the next morning. Instead of the mobile service man being able to the repair at the campground, he had to take it back to the shop. It took almost triple the amount of time to get the tire repaired (not including travel time) than it would have without the Tyron.
Would we purchase this item again? NOPE!