After adding larger wheels and tires to your Jeep, your speedometer will no longer read accurately. The Rough Country Speedometer Calibrator provides a convenient solution to this issue with a few added benefits. Not only will this plug-n-play tool recalibrate your speedometer, but it will also allow you to set automatic transmission shift points to accommodate larger tires. It can also be used to diagnose check engine lights and adjust ESC (Electronic Stability Control).
Note: Not Compatible with Rubicon 392 or 4xe Models
Note: Not for use with Jeeps equipped with Adaptive Cruise Control
CARB Notice
- Legal in California, or other states adopting California emissions standards, only for racing vehicles that may never be used, registered or licensed for use, upon a highway. Can not be shipped to California residents.
Speedometer Calibration: When larger wheels and tires are added to a Jeep, the speedometer no longer reads correctly. This tool allows you to easily recalibrate your speedometer for tire and gear changes.
Automatic Transmission Optimization: With a greater rotational force from larger wheels and tire, your Jeep’s transmission does not know when to shift. The Rough Country Speedometer Calibrator can also be used to set ideal shift points.
Engine Diagnostics: Whether you have a “check engine light” or a “service needed” message, then Rough Country Speedometer Calibrator can both read and clear your codes.
Electronic Stability Control (ESC): After lifting your Jeep you may have noticed that the ESC light on your dash comes on often. This issue can be eliminated by using the Rough Country Speedometer Calibrator to optimize your stability control.
Vehicle Specific Design: The Rough Country Speedometer Calibrator is meant for use with all JL Wranglers and JT Gladiators. It is compatible with all engine and trim options on both 2 and 4 door models.
- Speedometer Calibrator
- USB Update Cable
- OBDII Cable
- Carrying Case
- Features: Plastic
- Color: Red
- Shipping Weight: 1lb
- Shipping Dimensions: 7in x 5in x 2in (L x W x H)
Jeep Gladiator (JT)
- 2025 Jeep Gladiator (JT)
- 2024 Jeep Gladiator (JT)
- 2023 Jeep Gladiator (JT)
- 2022 Jeep Gladiator (JT)
- 2021 Jeep Gladiator (JT)
- 2020 Jeep Gladiator (JT)
Jeep Wrangler 2-Door (JL)
- 2025 Jeep Wrangler 2-Door (JL)
- 2024 Jeep Wrangler 2-Door (JL)
- 2023 Jeep Wrangler 2-Door (JL)
- 2022 Jeep Wrangler 2-Door (JL)
- 2021 Jeep Wrangler 2-Door (JL)
- 2020 Jeep Wrangler 2-Door (JL)
- 2019 Jeep Wrangler 2-Door (JL)
- 2018 Jeep Wrangler 2-Door (JL)
Jeep Wrangler Unlimited 4-Door (JL)
- 2025 Jeep Wrangler Unlimited 4-Door (JL)
- 2024 Jeep Wrangler Unlimited 4-Door (JL)
- 2023 Jeep Wrangler Unlimited 4-Door (JL)
- 2022 Jeep Wrangler Unlimited 4-Door (JL)
- 2021 Jeep Wrangler Unlimited 4-Door (JL)
- 2020 Jeep Wrangler Unlimited 4-Door (JL)
- 2019 Jeep Wrangler Unlimited 4-Door (JL)
- 2018 Jeep Wrangler Unlimited 4-Door (JL)
- Shared By Others
- Share a Photo
- Ask a Question
- Write a Review
Rough Country Speedometer Calibrator Reviews
Shipped fast, and included shock resistant case. Extremely easy to set up program, both new Jeeps in less than ten minutes. Well worth the price.
This doesn't work on my 2022 Jeep Gladiator. I tried updating via RC's site but the updater says that mine is already updated.