Am looking to replace original tires on Outlander Max Ltd, 2011. Treads are almost gone but biggest problem is flats. First couple of years ran on sharp rocky terrain and also had leaking. Dealer reseated and slimed seamed to fix it. Now better terrain am getting slow leaks again. Ride dirt trails and roads without sharp rocky terrain now. Also plow with chains in the winter. Current tires are Carlisle 560441, 560442, AT26X8R12, and AT26X10R12. Any suggestions?