Got 10,745 miles out of the front and rear OEM Bridgestone BT020's on my '04 FJR, could have gone probably another 750-1000 miles before fully hitting the wear bars. Front tire was fairly badly cupped. Always ran the front and rear at 40 psi.

Replaced with Avons, running 42/42 psi, just turned 8500 miles on the Avons, estimate I will get at least 11,000, maybe 12,000 miles total miles wear, absolutely NO cupping on front tire.

No need to try anything else as far as I'm concerned, staying with the Avons.
Lee in the Mountains of Northern California 8)