My stock ones lasted about 7 years - then I bought some used ones for $ 100/set and those are lasting 4 years thus far. I need to change tires in a few months so most likely, I will get them replaced at that time to avoid issues. It is interesting - but if you get some used ones, they can last quite a bit provided that the haven't been used - kind of like batteries.

Man thats awesome, I have change the ones on my twice or 3 times since I got her. she's turning 11 years in July.
What do you guys suggest? Its getting annoying paying the dealer $1000+ for something thats a battery problem.