Same tires (but not 20") on my 04, 06, and now the 08. BF Goodrich; mileage above 50,000 and still have plenty left.

I did replace my front tires on the 08; but the wear problem is an alignment problem (that Ford says doesn't exist); and I don't rotate on the dually. I had a local alignment guru do an alignment after I replaced my fronts at +40,000 and the slight pull is gone but it looks to me that I still have a problem with wear on my RF; my solution will be to trade next spring.

I have never gotten over 50K tire mileage with cars or trucks; so I have been pretty impressed with the BF Goodrich tires.

Just my 2 cents,

Bob