# Chassis Pro > 14 chassis calculations, 11 graphs Easy, fun, fast Knowledge is Power! Canonical page: [https://chrome-stats.com/d/com.speed\_wiz.chassis](https://chrome-stats.com/d/com.speed_wiz.chassis) ## Overview - **ID:** `com.speed_wiz.chassis` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Speed-Wiz Software - **Category:** AUTO\_AND\_VEHICLES - **Downloads:** 146 - **Version:** 6.0 - **Last updated:** 2024-08-01 - **First published:** 2014-05-08 - **Publisher country:** US - **Size:** 1.71 MB - **Data as of:** 2026-09-14 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.speed_wiz.chassis) - **Website:** [http://www.speed-wiz.com](http://www.speed-wiz.com/) - **Privacy policy:** [http://www.speed-wiz.com/android/privacy-policy.html](http://www.speed-wiz.com/android/privacy-policy.html) ## Description Speed-Wiz Chassis Pro has all the car chassis calculations and chassis simulations you need to build and modify great cars, trucks, motorcycles, and boats. Its many automotive chassis calculations and chassis graphs make it easy to find out what you need to know. Easy and fun to use, Chassis Pro will give you results immediately with no tedious setup and learning chores. It's car math made simple.


Please note: Car Math Pro is replacing this app.


Automotive chassis calculations and simulations:
- Conditions including density altitude
- Battery voltage, density, clarge level, freezing point, and self-discharge rate
- Center of gravity in three dimensions, side and end weights, diagonal weights, weight distribution
- Coolant boiling point and freezing point
- Drag coefficient and rolling resistance coefficient based on coast-down test
- Aerodynamic drag force and power loss due to aero drag
- Driveshaft speed
- Frontal area
- Gear ratio based on vehicle performance
- Gear ratio based on gear tooth count
- Overall gear ratio
- Shift points based on torque peak, power curve, or redline
- Speedometer error
- Wing lift (downforce) and drag


Chassis graphing:
- Conditions
- Battery
- Coolant
- Drag force
- Drag loss
- Driveshaft speed
- Gear ratio
- Overall gear ratio
- Shift points
- Speedometer error
- Wishbone suspension geometry by travel


Easy and fun to use
Automatic, instantaneous calculations
Advanced, reliable, and proven algorithms
Unlimited vehicle and configuration files
Configurable colors
Proven chassis algorithms
Context-based online help
Metric and English inputs and outputs with automatic conversion
No advertising


Other Speed-Wiz car math modules include Engine Pro, Suspension Pro, Tire Pro, Brake Pro, Performance Pro, Turbo Pro, Race Pro, and more! ## Rankings - #1,833,006 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.INTERNET` ## Similar extensions and apps - [Performance Pro](https://chrome-stats.com/d/com.speed_wiz.performance) — 259 users - [Car Math Pro Car Calculator](https://chrome-stats.com/d/com.carmathpro.pro) — 34,686 users, 3.79 / 5 - [Suspension Pro](https://chrome-stats.com/d/com.speed_wiz.suspension) — 663 users - [Engine Pro](https://chrome-stats.com/d/com.speed_wiz.engine) — 697 users - [Brake Pro](https://chrome-stats.com/d/com.speed_wiz.brake) — 87 users - [Turbo Pro](https://chrome-stats.com/d/com.speed_wiz.turbo) — 174 users - [Kart Chassis Setup Pro](https://chrome-stats.com/d/com.jetlab.kartchassissetuppro) — 10,710 users - [Kart Chassis Setup PRO](https://chrome-stats.com/d/com.jetlab.kartchassissetup) — 733 users - [Tire Pro](https://chrome-stats.com/d/com.speed_wiz.tire) — 51 users - [Four-Link Pro](https://chrome-stats.com/d/com.speed_wiz.fourlink) — 435 users - [Racing Aspirations](https://chrome-stats.com/d/com.racingaspirations.app2) — 3,696 users - [Kart Chassis Setup for racing](https://chrome-stats.com/d/com.isenet.kartchassissetup) — 3,017 users, 3.00 / 5 --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.speed_wiz.chassis)