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Vehicles with Tire Pressure Monitoring System (2005–)

If you are concerned because the TPMS lamp is on, please remember that vehicles with the tire pressure monitoring system (TPMS) may experience a situation where the warning light is on, yet the tire pressures are correct. Be sure to check the pressure on all of the tires.

Please be aware of the following:

  • The tire pressure monitoring system (TPMS) will warn the driver of a low tire pressure based on the manufacturer recommended cold placard pressure (the placard is located on the driver's side B-pillar).
  • The tire pressure will vary with temperature by about 6.9 kPa (1 psi) for every 6.5° C (12° F). When the outside temperature decreases, the tire pressure will also decrease. Dodge recommends adjusting the tire pressure for this decrease in pressure. Please refer to the vehicle owners manual for information on how to properly inflate this vehicle’s tires.
  • The tire pressure will increase as the vehicle is driven. This is normal and there is no need to adjust for this increased pressure.
  • The TPMS will warn the driver if the tire pressure falls below the low pressure warning threshold for any reason, including low temperature.
  • The tire pressure monitoring system will continue to warn the driver of low tire pressure as long as the condition exists, and will not turn off until the tire pressure is at or above recommended cold placard pressure. Once the low tire pressure warning has been illuminated, the tire pressure must be increased to the recommended cold placard pressure in order for the TPMS warning lamp to turn off. Once the updated tire pressures have been received, the system will automatically update and the TPMS warning lamp will extinguish. The vehicle may need to be driven for up to ten minutes above 25 kph (15 mph) to receive this information.
  • In order to properly maintain vehicle tire pressure, please refer to the owners manual for additional information regarding tire inflation. Note: Tire pressure should always be set based on cold inflation tire pressure (defined as the tire pressure after a vehicle has not been driven for three or more hours—and in outside ambient temperature).
  • Seasonal temperature changes will affect tire pressure—the tire pressure monitoring system will monitor the actual tire pressure in the tire.

Aftermarket Wheels and Tires on All Vehicles

Installing aftermarket wheels and tires on cars and trucks in the attempt to individualize one’s vehicle with a custom look is very popular. However, installation of these custom wheels and tires presents a number of problems that challenge the performance, handling, and safety of the vehicles. Though it's quite common for people to put oversized custom wheels on their vehicles, changing the diameter of the wheel/tire has a direct effect on the vehicle's emissions.

The problems resulting from these enhancements include:

  • Extremely harsh ride due to excessively low profile of tires
  • Sluggish acceleration
  • Poor handling
  • Decreased fuel mileage
  • Accelerated wear on all components
  • Braking issues due to increased mass (weight of wheels)

The suspension, driveline, and brakes are not designed for the mass and weight of these wheel/tire assemblies. Any change in unsprung weight from design specifications directly affects these conditions. The overall wheel/tire diameters change the way the vehicle tracks and affects wheel alignment. This scenario applies to all vehicles.

Learn more about Tire Pressure Monitor Systems

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Jeep Tire Questions and Answers

tammyrich, 2000 Jeep Grand Cherokee, 4.7L V8, Springtown, TX

I just purchased this Jeep with the Airbag light on? I ordered a used Airbag Control Module to install. If that doesn't work, what else is recommended. I am having doubts that it is the CLock...

vetdoc, 2001 Jeep Grand Cherokee, 4.0L 6 Cylinder, Sanibel, FL

I just had a used complete rear end put in my Jeep by a Tire shop, it cost me $1400. They ordered the rear end from a salvage yard and they told me I had a 1 year labor warranty on any failed part...

jefrsontbc, 2003 Jeep Liberty, 3.7L V6, Huntington Station, NY

What would cause smoke to come from hood and some rubbing noises coming from front tires but car doesn't run hot or stall. All fluid levels that I can check (coolant, oil, transmission and brak...

Mitch75, 2007 Jeep Liberty, Cleveland, OH

Everything was done- alignment, rotation and prior to that I had a tune up done about a week ago the tires were replaced. I didn't hear that sound before with the old tires...

fossil50, 2001 Jeep Cherokee, Sweet Grass, MT

As I drive around 60-90kph my steering wheel starts to wobble harshly in my hand as though the steering is at fault. I dare not drive it until I know what the possible cause could be. Friends say i...