>>63886946
Those tires have another problem. If you want to go for low ground pressure and you therefore have low inflation pressure and soft sidewalls in the tire the tires would be very "bouncy. That would be fine for a truck or an artillery tractor but for actual artillery it couldn't take the recoil. The vehicle would need some method of transferring recoil to the ground directly. This was even an issue for some tracked vehicles, the 600mm Karl-Gerat self-propelled siege mortars drove on tracks but would lower their suspension when firing so the bottom of the hull rested directly on the ground for maximum stability.