Calculators
Tacoma tire and wheel tools.
Every calculator on Taco Tires, from tire sizing and speedometer error to gearing, wheel offset, and max tire fitment.
Tacoma Tire Size Calculator
Compare Tacoma tire sizes, rim diameter, speedometer error, effective axle ratio, and highway RPM before changing tire size.
Tacoma Tire Recommender
Get specific Toyota Tacoma tire recommendations by use case, size fitment, trim, suspension height, wheel plan, and modification tolerance.
Tacoma OEM Tire Size Lookup
Look up your Toyota Tacoma stock tire size by model year and trim, including likely OEM wheel size, tire type, and factory package alternatives.
Tire Size to Inches Converter
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
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
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
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
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
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
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
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
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
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
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
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
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
Estimate the biggest tire that fits your Tacoma by generation, lift height, and wheel offset, with the trimming and regearing each size requires.