I just traded my 2000 Nav with 17in LTX's---there was probably a good 5K miles left and I would have replaced them this fall. But decided to buy a new Nav. The 2000 Nav had the LTX's on for 70,000 miles and they were still going strong---they were just great---we off roaded in Wyoming and got into terrible sharp rock areas---the tires held up great and continued to run strong. Highly recommended---great riding tire and I did get the mileage---I paid about $900 for them but that was a few yrs ago. A tire person warned me to not run them after that off road as we probably broke belts---but they ran with no problems for two more yrs coast to coast!