Before an ASM Smog test, if the vehicle has a bald tire, what action is recommended?

Before an ASM Smog test, if the vehicle has a bald tire, what action is recommended?

• A. Tell the customer the vehicle is unsafe to test and replace the tire.
• B. Proceed with the test after inflating the tires.
• C. Test only the engine emissions and skip the dyno portion.
• D. The tire condition is not relevant to the test.

Answer: (D)

Before a dynamometer-based smog test, the vehicle must be in safe operating condition. A bald tire can slip on the rollers, risk a blowout, and produce unstable wheel-speed readings, which jeopardize both safety and the accuracy of the test results. The correct action is to tell the customer the vehicle is unsafe to test and replace the tire before proceeding. Inflating a bald tire doesn’t restore tread, and skipping the dyno portion or changing only the engine-emission test would ignore safety and accuracy concerns.

Before a dynamometer-based smog test, the vehicle must be in safe operating condition. A bald tire can slip on the rollers, risk a blowout, and produce unstable wheel-speed readings, which jeopardize both safety and the accuracy of the test results. The correct action is to tell the customer the vehicle is unsafe to test and replace the tire before proceeding. Inflating a bald tire doesn’t restore tread, and skipping the dyno portion or changing only the engine-emission test would ignore safety and accuracy concerns.