The coach came with Goodyear G670 tires. The rears are 275/80R22.5, which have not had any significant problems. However, the front were the infamous G670 295/80R22.5 tires. These are known to have problems, and have a reputation of blowouts even when they were young.
So for safety’s sake we replaced them with Michelin X Coach HL tires. These are more expensive, but are known to be more reliable. Plus they have an additional 1,000 lbs or so carrying capacity. Not cheap, but then safety has no price.