The situation is the concrete rear driveway to the garage is so steep that the
riding mower (home brew) spins its old tires rather than climb up the grade. The tires are 18 inch outside diameter with fairly coarse knobs, therefore costly.. The problem is thay are so old they have become hard and cracked. I had to put tubes in them to hold air. Is there some way to give them new life? I have let alot of air out hoping a bigger foot print would work and it only seemed to help a little. I also tried chains but they spun on the concrete. The concrete has a broom finish, not smooth. The traction is so close that if someone pushes the mower it will go. Don't always have two people available. Any ideas welcomed. Thanks, Scott