Went shopping for a set of Sailun S637's for our fifth wheel, It appears that they are difficult to get right now. Two tire dealers told me they are back logged until June. The main two players in ...
Depending on your rig, the HANKOOK F19 might be a viable option. Not a true G rated but an F (7.50R16LT) at 3330 lbs. HERE is a 2011 article. I have had good luck with Hankook on my tow vehicle!