This calculator shows the effect of fitting various sized diff and gearboxes to the MKIV supra, it also contains a graphical chart showing the effect of different tyre and wheel sizes and also offsets that effect both fitment to the hub and the change on speed/acceleration. There are two main sheets on the file, Wheel size fitment and gear ratio calculator.
Thanks to Homer off mkivsupra.net owners club for this excel file, If you have any other handy supra or 2jz related calculators feel free to contact us below.
One thought on “Supra gear/diff ratio and tyre size ratio calculator”
Very useful, made setting up the Haltech dash gear display easy!