I had the same size trail grapplers on stock 18's and they only lasted about 23,000 miles. I did not like the noise they made, and they rode a little too rough for me. Towed well though. I have 35x12.50x20 Toyo Open Country ATII's now and I couldn't be happier. Nice quite ride and the tread pattern looks way meaner than the Terra grapplers. Price is pretty reasonable as well. I paid 1050 for 4 from SD Wheel Corp. My Trail grapplers cost me 1250 locally in 2011. Nitto is a good tire, I just prefer Toyo now.