We only got 7 months out of the OEM tires... but there's more to the story. We lost one tire to road debris (rebar, I think) and a second tire had the outer shoulder worn off due to alignment issues. After realignment, we replaced all four with new Sailun load range Gs on the existing 16" high pressure, high load range rims with metal valve stems. BTW, the TPMS saved us a lot of heartache and damage when we hit the rebar.
Rob