Welcome to ForzaTuner.com

ForzaTuner.com was created to help new and old players within Forza tune their vehicles quickly and easily. Using a number of fine calculations we take the data you input, and work out the ideal tune based on a number of factors such as Weight, Front Percentage, Springs, Class, Horsepower etc. 

Unlike other tuning calculators who use fixed data, we are different, after all each vehicle has it's own unique dynamics.

“Racing is a matter of spirit not strength.” - Janet Guthrie

We may be new in the tuning world, however our players aren't, some of which started playing Forza back on the Xbox 360 on the 3rd May 2005..! As such we have over 14 years experience tuning our vehicles to compete online and offline.

It wasn't easy.. Forza has never really provided data in relation to tuning, and over the years they have slightly modified the base tunes to suit around their PI system, which in itself is a nightmare.  Let's face it, we all know the dreaded 800 and 700 class vehicles that seem to dominate the leaderboards.

That's why tuning is vital, in order to compete both online and offline!


Keeping Things Personal

Our system uses a vast array of data to calculate the perfect tune for your vehicle. We don't use set data, what do we mean by this? It means that every tune, on every vehicle is 100% unique around the upgraded parts "You" have installed on said vehicle. This means that not everyone is going to have the same tune keeping competition still competitive!

“If everything seems under control, you're not going fast enough.” - Mario Andretti

Updates to ForzaTuner.com


Version 2.10

Happy New Year Tuners! Our first update in 2020.

- Added New Series 18 Cars
- Fixed Issues With Diff Calculations Where It Would Show Above 100%
- Fixed Issues With Rally Springs Where It Would Be Above Max Allowed
- Fixed Issues With Anti-Roll Bars Where The Rear Setting Would Be Unbalanced In Heavy Weight Vehicles
- Adjusted Offroad Calculations To Reduce Vibrations (Prevent Rolling)
- Minor Adjustments To Sever To Help Speed Up Calculations

Version 2.01

A Small Update To Fix 2 Cars Without Gear Information.

- Fixed Missing Gears For Ferrari 599XX Evolution (FH4)
- Fixed Missing Gears For Ford GT 2005 (FH4)

Version 2.0

- Added Series 17 Cars To Database
- Corrected Issue With Abarth 595 Springs
- Fixed Issues With Some Cars Showing No Gears
- General Bug Fixes and Database Corrections

Version 1.9

- New Server To Handle Increased Traffic
- Updated Code to PHP 7.3 Standards
- Sorted Issues With Weight and Horsepower Displaying Incorrectly
- Tweaked Spring Heights
- Added Series 16 Cars
- Bug Fixes and Database Upgrade

Version 1.8

- Fixed Tune Selection (Standard, Speed, Acceleration) which resulted in an opposite effect
- Sorted Wrong Brake Balance Calculations
- Sorted Wrong Diff Distribution Calculation
- Minor adjustment to Front and Rear Differential Calculations

Version 1.7

- Added Series 15 Horizon 4 Cars
- Corrected Rear Tyre Calculations Bug
- Included Calculations for Weight Difference Across Each Tyre
- Minor Adjustment to Rebound Calculations for Rally Springs
- Adjusted Stock Gear Ratio Settings

Version 1.6

A major rework into our tuning calculator, based on feedback and suggestions, we'd like to thank everyone who has contacted us and provided excellent feedback, thank you!

- Tyre pressure is now calculated on weight percentages, this is across 3, 4 and 6 tyres.
- Adjusted brake pressure calculations to prevent wheel lockups (Skidding etc)
- Adjusted Bump Calculations
- Adjusted Springs Calculations
- Adjusted Anti-Roll Bars Calculations
- Adjusted Gear Calculations

As always we love feedback, and would welcome any on these new calculations.

Version 1.5

- Added Series 14 Horizon 4 Cars

Version 1.4

- Fixed Broken Motorsports 7 Tune

Version 1.3

- Added Tuning For Horizon 3
- Modified Game Selection
- Added All Forza Motorsports 7 Cars To Database
- Added All Forza Horzion 4 Cars To Database
- Added All Forza Horzion 3 Cars To Database
- Adjusted Tune Calculations For Weather Conditions
- If Car Not In Database Other Option Available

Version 1.2

- Created a Database for each tune
- Tweaked Gear Ratio (On Speed Settings)
- Added An Option To Include Car Make and Model

Version 1.1

- Tweaked Gear Ratio (On Acceleration Settings)
- Added Conversion Data (Imperial and Metric)
- Added Calculation for Springs and Dampers
- Added Calculations for Differential Settings

Version 1.0

- Site Launched

Feedback From Users


“Using this monster RJA for the first time and out of the garage it sucks! Your calculator helped me tame this beast placing me from dead last to 1st place in the current Forthazon Autumn Season Event. Only needed to buy Race Brakes and Transmission to make full use of your tuning. Brilliant work, will be using this a great deal..” - Devilish Accord

“I've been using manual calculations to tune springs etc for ages, your calculator makes this a breeze! I still manually tune my gears though, although your base gearing does work..” - FreshGALNET

“Love it thank you..” - M****T**** (Name masked due to age)

“It simply works..” - Coco

Thank you all..!