Accurate Speedometer Calibration for Lifted Trucks

Installing larger tires on your Jeep or Ram is a rite of passage, but it often leads to inaccurate speedometer readings and erratic shift points. The Rough Country Speedometer Calibrator is the ultimate solution, designed to sync your vehicle's computer with your new tire size in minutes. Stop guessing your speed and restore factory-level accuracy with this simple, effective tool.

Key Features and Benefits

• Plug-and-Play Installation: Connects directly to your vehicle's Diagnostic Link Connector (DLC) port—no complex wiring required.
• Instant Calibration: Quickly reprogram your ECU to account for larger tire diameters, ensuring precise speed and odometer readings.
• Optimized Shift Points: Restores factory transmission shifting logic, which can be thrown off by larger tire sizes.
• User-Friendly Interface: Designed for ease of use, allowing you to update settings whenever you change your wheel and tire setup.

Don't let a misaligned speedometer affect your fuel economy or lead to unwanted traffic tickets. This device is an essential companion for any serious suspension build. By correcting the data your vehicle's computer receives, you ensure that your transmission, ABS, and traction control systems operate exactly as intended. Whether you are running 33s, 35s, or larger, this calibrator is the smart choice for maintaining vehicle health. Trust GGCRACING for all your performance calibration needs.