When we bought our RV, it was 8 years old and it still had the OEM tires from the 9-year-old chassis build date. They were GYs, on 19.5 rims.
On the way home from picking the rig up from the seller (private sale 30 miles from home), I was so ticked off at the noise and harshness of the GY tires, I stopped at the Schwab store in town and got them organised to get me a set of 6 Toyos. Two days later the new Toyos were installed. Their mold date was only 6 weeks earlier than installation.
Compared to the old GYs, the ride was much quieter. Since they were new, I expected the ride to be smoother, but I was surprised how good it was.
Since there are lots of Schwab stores in this part of the world, and their prices are very competitive, we've been their customers since the mid-1970's, when we came back to Washington State from a 3-year stay in Virginia.