* Speedometer Inaccuracy: Your speedometer will read slower than your actual speed. This can lead to speeding tickets and unsafe driving.
* Odometer Inaccuracy: Your odometer will record fewer miles than you actually drive. This can be a problem for maintenance scheduling and resale value.
* Transmission Problems: The smaller tire diameter will alter the gear ratios, potentially causing the transmission to work harder and potentially leading to premature wear.
* ABS and Traction Control Issues: The change in wheel rotation can interfere with the proper functioning of your anti-lock brakes (ABS) and traction control systems.
* Rubbing: While less likely, the smaller sidewall (60 vs 70) *might* cause rubbing depending on suspension setup and any modifications made to the vehicle.
In short, the difference in tire size is too substantial to be ignored. Stick to the recommended tire size for your 2002 Chevrolet Trailblazer LT. Check your owner's manual or the sticker on your driver's side doorjamb for the recommended tire sizes. Using the correct size is crucial for safety and vehicle performance.
