jimh425 wrote:
I suspect people are adding 19.5s to NOT push their luck.
Perhaps if you think that tires are all that make the difference. They are certainly the weakest link, but the fact is that the other parts of a 1 ton pickup are well-matched to E rated tires.
Installing 19.5" tires doesn't fix the underlying problem that the truck, and therefore its axles, springs, bearings, steering, etc., are probably significantly overloaded.
If all it took were airbags and G or H rated tires, there'd be no such thing as a DRW 1 ton; a SRW 1 ton with H rated tires has more than enough capacity to significantly exceed the GVWR of a 1 ton DRW with E rated tires without overloading or even stressing the G or H rated tires.
It takes a lot longer to see the wear and damage caused by overloading components that take a lot more time to fail than a set of tires, but it doesn't mean that they're not loaded beyond their design limits.