I have a chow-coyote mix who has a lot of excess energy. She has a big back yard to run in, but needs more exercise. So I have started taking her out with my bike on a leash. She runs along side my bike at 12 mph and does really well. After 20 minutes or so, she has had a good workout. But I'm worried her foot pads will wear out on the asphalt. I guess going on a trail with a mountain bike would be better, but all I have is a road bike. Anyone have any experience with this?