Toyota Regear Calculator
Calculate the optimal gear ratio for your Toyota vehicle. Select your specific model below to get started.
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Tire & Gear Configuration
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Calculate the optimal gear ratio for your Toyota vehicle. Select your specific model below to get started.
Use the Toyota Regear Calculator to evaluate gear and tire changes and their effects on driveline behavior and speedometer accuracy. It supports many Toyota truck and SUV models.
.Enter your vehicle specs and test gear/tire combinations to compare results. We source data from OEM materials and flag uncertainties; please use https://regearcalculator.com/contact to report problems or inaccuracies.
Toyota's solid-axle and heavy-duty applications include the 8.4" rear axle on the Tacoma, the 9.5" rear on the Tundra, and the well-regarded solid axles on the Land Cruiser and older 4Runner.
Replaced the "Toyota Pickup" nameplate. Ratios commonly ran 3.73 to 4.56 depending on engine/drivetrain.
Introduced the 4.0L 1GR-FE V6. Factory ratios generally ran 3.73 (V6/automatic) up to 4.10 (4-cylinder 4x4). 2009 models switched from a mechanical limited-slip differential to an electronic system.
Toyota specifically updated the suspension, rear differential, and rear axle for this generation — one of the few times a manufacturer has explicitly called out a mid-cycle axle change as a stated design goal.
Built on Toyota's TNGA-F platform with turbocharged and hybrid powertrains. Factory ratios: 3.60 with the automatic, a much lower (numerically higher) 4.30 with the manual.
The Tundra runs higher numerically than the Tacoma — 4.10 standard, 4.30 with the tow package — with no 3.73 option at all.