I just noticed the Michelin Defenders LTX m/s have a max rated tire pressure of 44 psi. I’m surprised is that low given the door sticker recommends 35 psi. Anyway, I’m currently at 36.5 cold. Hitting the highway tomorrow and it’s going to be warm by local standards and will be 28C/82F so I’ll be keeping a close eye on how high my tire pressure rises due to both highway speeds (should see 2-3 psi increase) and temp increase as the morning temps rise (probably another 2 psi for that as well). Doesn’t leave a lot of buffer.