hi guys, i have a pr4 on the front(2015 connie). i have prolly 2000 miles on it. i want to put a dunlop RS3 on the back. local bike shop says thats a no-no with such a heavy bike. he also wants to sell me a new TPMS sensor. says they go in 4 years (250$?) for the part :-\ says i should do it while tire is off save labor $160. sheesh, jim