billy t.
+1y
Every tire has a load index. Your right though, a D rated tire is something like 2700 pounds per tire. E is something like 3000+... But what ever the rating on the tire is, is what you can put on it.
They started building 22" tires with some kind high load index once truck and SUVs started running them all the time. Some guys still run car tires, but there are alot of light duty type tires in the sizes you guys want to run on a 22" rim.