There is a 15x6x6 turf saver, and it would be fine on the asphalt. I love my snow hogs. There are some more aggressive tires called the xtrac, I think. If you're mostly on the street and around the lawn, go with turf savers. If you're on the trail at all, I'd go snow hogs. If you're only on the trail, I'd go xtrac. Just my opinion.