<strong>Yahoo Message Number: 86720</strong>Michael,<br/><br/>We have a 2000 Allure with the original Smart Tire senders that were in it when we purchased it used in 2002. All six senders still work just fine, so... apparently ours have lasted at least 10 years, maybe 12 if they were installed when the coach was new. I don't plan to replace them until they expire. When thay happens I will just...