Should i concerned when the TPMS light comes on?

That depends on how long it has been on. Your TPMS light will typically come on when the weather has gone from somewhat warm to stark cold. Drastic changes in temperature could deplete or inflate air pressure in your tires causing your TPMS sensor to trigger. Waiting a day or two after the light comes on to get your tires checked won’t be the end of the world. However, if you ignore it for too long, you could find yourself in a bit of trouble. Below are the disadvantages to under-inflated tires: 

  • Gas mileage will go down
  • Shortened tire life due to uneven tread wear
  • Decreased ability in steering handling
  • Tire blowout due to stress from under-inflation