On: Farm vehicles approaching weights of sauropods exc...

[throwaway0a5e]

It's not the tracks that cost you. It's the idlers, sprockets, etc.

[supermatt → throwaway0a5e]

My comment was is in response to metal treads causing damage...

[thatcat → supermatt]

It's the pressurized air in the tire that reduces applied ground pressure from the vehicle not just the surface material.

[supermatt → thatcat]

Not sure why you are responding to my comment either... but what you are saying makes no sense to me.

Obviously the pressurised air itself has mass, but I think its more to do with tyre deformation modifying the contact surface area. The air inside is just to distribute the load across the contact area.