Tire Size - Speedometer vs Actual MPH Calculator | Jeep Wrangler Forums (JL / JLU) - Rubicon, Sahara, Sport, 4xe, 392 - JLwranglerforums.com
Can tires with a lower aspect ratio be replaced than the recommended? The tires recommended are 245/60/18. Can I replace it with 245/45/18? - Quora
![Speedo error calculator – speedometer error as a result of tyre size change – Speedometer calibration Speedo error calculator – speedometer error as a result of tyre size change – Speedometer calibration](https://www.tyresizecalculator.com/images/articles/speedo-error-calculator.gif)