The Air Care Colorado Inspection and Maintenance (I/M) Program is a network of 18 vehicle emissions testing stations conveniently located throughout the Denver metropolitan and North Front Range areas. Additionally, 18 RapidScreen roadside emissions testing units are rotated among state-approved locations throughout the program area.
Depending on the vehicle model year, Air Care Colorado uses three different testing methods to measure and evaluate emissions:
LOW PROFILE RIMS & OVERSIZED TIRES - Please note that front-wheel and all-wheel drive vehicles with low-profile rim sizes 17 inches or larger in diameter or vehicles with wheel sizes larger than 34 inches must be tested on special dynamometers capable of testing vehicles with these unusual features. Please take your vehicle to the Sheridan, Boulder, Ken Caryl, or Fort Collins stations for inspection. These are the only stations in the program area equipped with specialized dynamometers that can test these vehicles.