Wolfus, I like your thinking on this. I don't know for certain about aluminium or magnesium wheels, however. Lots of the alloy wheels are heavier than steel ones. I would have to imagine this is because most of the alloy wheels seem to be designed for looks, rather than weight savings. But a carefully designed alloy wheel might be just the thing. Doesn't Alcoa make something we might could use ? I really like the high pressure tire idea. I went and looked at the wheels and tires on the UPS truck that comes every day to my shop. It had 9x19.5 tires on it. They were load range E, and were about 37 inches tall, with about a 6 inch wide tread face. If one could find some 19.5 wheels with a bolt pattern to fit our trucks, that might be a neat size to try. DF, @ his Dad's house