nitrogen filled tires.....how do you add?? is air OK?

It's also a good idea to remember to R&R the muffler bearing(s) when you change the seasonal air.

I dont even do that anymore. I paid my mechanic 1K to install permanently lubed muffler bearings so I don't need to do this annually now. It will save me a lot of money but hey if you want to be the suckers that keep lubing them up every year then go for it. Now who will be laughing...huh....who...