I replaced the OEM rear tire with the same at 7000 miles. Approaching 14000 miles, and will need a new rear tire. Front OEM tires lasted about 11000 miles. Any suggestions for a rear tire that lasts longer? And, can I mix and match, as my front ite only has 2000 miles. I should say, I ride 90% on road, TC set to 1 unless it rains.