19.5 tire wear

My F250 had 30K miles on the 19.5's when I sold it and they still had healthy tread. OEM 17" Continentals used to last only 35K miles to the wear bars, but I could buy those cheap as dealer take offs. I sold my 18" Michelins with about 30K miles on them and they were probably past their halfway point when I switched over to the 19.5's.

My 5500 has over 45K miles on the 19.5's and they will age out before wearing out. Both trucks average 10k miles a year carrying the camper with few miles running empty.

I had 19.5 Hancock on my flatbed and calculating what PO drove on them, they aged at over 90,000 miles.
Than I put cheap Sailug (?) and got honest 60 k out of them.

I don't put very many miles per year. I traded my SRW with about 43K on the 19.5s. They were getting ready to age out, but otherwise looked almost new. Those were Hankook DH01s. I have 45K on my current tires. The rears are doing fine with plenty of tread left. I did change the front. I think 60K is doable even though mine was loaded all of the time.

I will probably get the Toyos again, I guess there are not many here with 19.5" tires.

I have those on my truck camper. My rig is around 7200 pounds rear axle and 5300 front axle. I run 90psi on the rear and 70 on the front. I've only got around 15,000 miles on them though. I rotate them every 5,000 miles and they are rebalanced at at that time. (Les Schwab was where I bought them and it's included with the purchase.) I rarely drive over 65mph and usually 60mph on highway as I either tow my Suzuki Samurai or a small boat trailer.
I like the sound of the tires on the road. Makes me feel like a real 'trucker'. Ha! But with the windows up, I don't hear them, so it's all good.