Going from Los Angeles to Bakersfield.
Going 75 on the 99 freeway and am almost there when I start to feel a vibration.
Feels like when the road gets rough.
Slow down a little, no change.
Change lanes in case it's that particular lane, no change.
Other than the vibration, car feels normal, no pulling, and doesn't feel or sound different when you hit a bump
Decide to get off freeway, when I'm on the off-ramp vibration goes away.
Now I'm thinking it may have been the freeway surface, but I'm going to check anyway.
Park in parking lot near exit, and start to smell burning rubber......
Get out and find left rear tire flat.
When I finally get the tire off, I can see a tiny little piece of sheet metal in the tread.
Evidently it didn't seal the hole like a screw or a nail would. (where the tire goes flat overnight sitting parked)
Wonder how long it took to slowly lose enough air to start a vibration.
And I think the tire is ruined because the sidewall is soft all the way around where the side wall would have folded against the ground.
Never thought the tire pressure monitor systems were worth anything till now. Wonder if I would have had a warning if the car actually had a TPMS....