Juddian:
Wear isn’t the only consideration here, too high pressure in drive axle tyres in particular can make an artic skittish, especially and obviously worse in the damp.My new tractor felt unstable at first, which i put down to new tyres needing to bed in and scrub off the mould releasing agent, however after 3 weeks and no improvement called in at our regular tyre bay, who found the drive axle set in particular over by 10psi, surprising the difference lowering them to our standard spec instantly made.
Dont forget a cold trye inflated to 125psi,when hot can easily reach in excess on 135psi