Tire Calculator (Offset&Speed)
Tire Calculator (Offset&Speed)
Download on App Store

This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.

Logo of Tire Calculator (Offset&Speed)
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Tire Calculator (Offset&Speed)

Stop the guesswork and avoid the rub. Whether you're dialing in your stance or upsizing your off-road tires, calculate exact wheel offsets and speedometer errors to keep your build road-ready and ticket-free.

Key Figures

Downloads

17K+

User Rating

4.8/5

Total Ratings

200

Publisher

Satoshi Mori

Category

Utilities

Locales

2

Latest Version

3.3.2

Size

7.5 MB

First Released

Feb 14, 2017
Features

Precision Math for Every Modification

Stop guessing and start measuring. Our calculator gives you the exact data you need for perfect wheel fitment and accurate speed readings.

Master Your Offset

Eliminate the guesswork. Calculate rim width and backspace to ensure your new wheels clear suspension and fenders perfectly.

Accurate Speed Calibration

Moving to bigger tires? Instantly see the percentage error on your speedometer to avoid costly highway speed traps.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

Tire Calculator (Offset&Speed) - Mobile app interface showing wheel offset calculation with inner and outer rim changes

Mobile app interface showing wheel offset calculation with inner and outer rim changes

Tire Calculator (Offset&Speed) - Tire calculator app interface showing wheel offset and backspace comparison for car fitment

Tire calculator app interface showing wheel offset and backspace comparison for car fitment

Tire Calculator (Offset&Speed) - Tire calculator app screen showing speedometer error and tire size comparison results

Tire calculator app screen showing speedometer error and tire size comparison results

Tire Calculator (Offset&Speed) - Mobile screen showing saved lists of wheel offset data and speedometer error calculations for front and rear tires.

Mobile screen showing saved lists of wheel offset data and speedometer error calculations for front and rear tires.

Tire Calculator (Offset&Speed) - Tire Calculator app interface showing real time GPS speed measurement for speedometer error correction

Tire Calculator app interface showing real time GPS speed measurement for speedometer error correction

Tire Calculator (Offset&Speed) - GPS speedometer error measurement result displayed on the Tire Calculator mobile app

GPS speedometer error measurement result displayed on the Tire Calculator mobile app

Tire Calculator (Offset&Speed) - The settings menu of the Tire Calculator app showing measurement units and customization options on a dark wood background.

The settings menu of the Tire Calculator app showing measurement units and customization options on a dark wood background.

Description

Please leave the troublesome calculation of wheel tire change to Tire Calculator! [Function] ① Wheel offset calculation (select rim width and offset or backspace) · Inner and outer rim position change amount (inch or mm) · Rim width change (inch or mm) · Change amount of tread (inch or mm) ② Speedometer ​​error calculation (Select tire size or directly input outer diameter) Automatic calculation of tire outer diameter before and after replacement · Speed ​​error(%) Real speed to meter display · Actual speed at 40(mph or km/h) display  *40 can be changed · Actual travel distance when traveling 1000 (mile or km) distance · Change in vehicle height (inch or mm) *The error of the car can also be added to the speed error calculation ③ Speedometer error measurement (GPS use) Actually run the vehicle, compare the GPS measurement value with the speedometer and measure the error *Results will cause errors depending on the measurement environment. [Features] · Easy-to-understand screen design! · Simple and easy operation! [Specification] Settable range ○ Offset calculation · Rim width 3.5 J to 16 J · offset (mm) -60 to +70 · backspace (in) 3" to 13" ○ Speed ​​error calculation · Tire width (mm) 135 to 405 · Profile (%) 20 to 85,82(R) · Wheel diameter (inch) 10 to 32 · Tire outer diameter direct input range 100 to 2000(mm) or 5-100(inch) · Vehicle side error correction (%) -30 to +30 ○ Speedometer error measurement · Measurable speed (km / h or mph) 10 ~ 300 [Notes] An error arises in the calculation result depending on the wheel brand and the brand of the tire. Be sure to consult experts before actually changing the specifications. Application creator assumes absolutely no responsibility.

Download

Download on App Store

This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.