The Stovebolt Site Forums The Shop Area General Truck Talk extending tire life, not mileage

Dont know its a "Ol Wives Tale" or not ...but I was always told by my pappy to never store my motorcycles or vehicles just on the concrete, always have some 2'X 2' chunks of plywood to put under the tires when storin for a long time to keep the tires off the concrete and help keep em from rotting and developing flat spots?
Tim