Here we are at a huge Truck Show we do every year in Clifford Ontario for the Great Lakes Antique and Classic Truck Club. Australian road transport has a reputation for using very large trucks and road trains.
This means that Australian single semi-trailer trucks will usually have 22 tires, which is generally more than their counterparts in other countries. Super single tires are sometimes used on tri-axle trailers. The suspension is designed with travel limiting, which will hold the rim off the road for one blown or deflated tire for each side of the trailer, so a trailer can be driven at reduced speed to a safe place for repair.