# Tacoma Tire and Wheel Calculators

Free Toyota Tacoma tire, wheel, gearing, and fitment calculators.

## Canonical URL
https://tacotires.com/tools

## Calculators
- [Tire Size to Inches Converter](https://tacotires.com/tire-size-to-inches): Convert any tire size to inches and between metric and flotation formats. See overall diameter, section width, sidewall, circumference, and revolutions per mile.
- [Speedometer Correction Calculator](https://tacotires.com/speedometer-correction-calculator): Calculate Tacoma speedometer error from a tire size change. See your true speed, the percent error, and whether the change is within the safe window.
- [Tire Size RPM Calculator](https://tacotires.com/rpm-calculator): Estimate Tacoma cruising RPM from tire diameter, axle ratio, and transmission gear. See highway RPM to judge lugging versus buzzing and to plan a regear.
- [Gear Ratio Calculator for Tire Size](https://tacotires.com/gear-ratio-calculator): Find the axle ratio that restores stock drivability after a Tacoma tire size change. See the effective ratio you lose and the regear needed for 33s or 35s.
- [Wheel Offset and Backspacing Calculator](https://tacotires.com/wheel-offset-calculator): Convert wheel offset to backspacing and back, and see how an offset change moves a Tacoma tire in or out. Includes factory offsets by generation and trim.
- [Wheel Spacer Calculator](https://tacotires.com/wheel-spacer-calculator): See how a wheel spacer changes Tacoma offset, poke, and track width. A spacer works exactly like reducing offset by its thickness.
- [Plus Size Tire Calculator](https://tacotires.com/plus-size-calculator): Plus-size a Tacoma wheel while keeping overall diameter the same. Find the aspect ratio for a larger rim so the speedometer and gearing stay accurate.
- [Bolt Pattern Calculator](https://tacotires.com/bolt-pattern-calculator): Calculate a bolt pattern (PCD) from a measured stud spacing, and confirm Tacoma wheel compatibility. All 6-lug Tacomas are 6x139.7.
- [Load Index and Speed Rating Lookup](https://tacotires.com/load-index-speed-rating): Look up tire load index and speed rating. Convert a load index to pounds per tire and a speed rating letter to its maximum speed, with Tacoma context.
- [Tire Pressure Calculator](https://tacotires.com/tire-pressure-calculator): Adjust Tacoma cold tire pressure for temperature and understand load-range pressures. Tire pressure changes about 1 psi per 10 degrees Fahrenheit.
- [Tire Size MPG Calculator](https://tacotires.com/mpg-tire-size-calculator): Correct your Tacoma MPG after a tire size change and estimate the annual fuel cost. Bigger tires make the trip computer under-report fuel economy.
- [Tire Weight Comparison Calculator](https://tacotires.com/tire-weight-calculator): Compare Tacoma tire weights and see the rotational effect of heavier tires. Weight at the wheel behaves like about twice its mass under acceleration.
- [Tire Cost Per Mile Calculator](https://tacotires.com/tire-cost-per-mile-calculator): Turn a tire's price and tread warranty into a cost per mile, and compare two tires on lifetime cost instead of sticker price.
- [Max Tire Size Calculator](https://tacotires.com/max-tire-size-calculator): Estimate the biggest tire that fits your Tacoma by generation, lift height, and wheel offset, with the trimming and regearing each size requires.