Just a little nugget of information, Simple Tire sells Sailun S637T tires pretty cheap. They are Chinese tires but are built to a very high standard, have an impressive load rating and are good for 75 mph speed rating. Quite a few folks on the Redwood forum swear by them, and Redwoods are moderately heavy 5ers. Mine maxes at 17,900 lbs. I have 17.5 load range H tires and when it’s time, I’m getting the Sailuns.
For the folks who wear 16” tires, take a look:
https://simpletire.com/sailun-235-80...SABEgKCn_D_BwE