Michelin 15" LTX M/S2 cold inflation pressure
I recently put a set of Michelin LTX M/S2 P235/75R15 108T 's on my FC25FB. I'd like to hear what the forum members who run this tire are using for their cold inflation pressure. In the recent Defender thread, it was reported that the Michelin load and inflation chart says that the maximum tire load, 1,985 pounds (derated load capacity) is achieved at 41 PSI. Senior forum member Switz who provides a lot of great information and insight, said that Andrew at CanAm in Ontario, who was an early proponent of this tire, recommended 44 PSI. Switz says he uses this tire and inflation pressure on his 23' and 25' Airstreams. I think this makes sense.
Now my here's my dilemma. Tireman9, one of our two tire engineers on this forum, has long advocated using the maximum inflation pressure noted on the tire sidewall as the cold inflation pressure for those of us with double axle travel trailers. Using the maximum rated inflation pressure helps to reduce the side loading stress imposed on the tires in tight turns which could eventually result in belt separation and tire failure.
Lots of ST tires fail from belt separation. I haven't read of any reports on this forum of similar belt failures on the Michelin tires. So, does running the tire sidewall maximum pressure of 50 PSI make the most sense or just bump up the Michelin recommendation of 41 PSI as many forum members probably do?