Tire Sizes

There were some questions and comments on tire sizes the other day, which made me think about a spreadsheet I had put together some time ago. So, I made it more user friendly and added some additional information to it. You can change tire sizes to see how the widths and diameters change, the approximate rim size, and how the RPMs and speed are effected, see how gear ratios affect RPMs and speed, and the MPH at various RPMs.

EDIT: Updated 6/21/2017 with additional information

EDIT: Updated 1/21/2019 with additional calculations and additional tire information.

Tire Sizes-v4.xlsx

Tire Sizes-v4.xls

There were some questions and comments on tire sizes the other day, which made me think about a spreadsheet I had put together some time ago. So, I made it more user friendly and added some additional information to it. You can change tire sizes to see how the widths and diameters change, the approximate rim size, and how the RPMs and speed are effected, see how gear ratios affect RPMs and speed, and the MPH at various RPMs.

Click to expand...

Nifty, thanks.

That's cool. Thanks!

Unfortunately my computer keeps telling me that I opened it in "Read only" mode and I can't enter any data, but that's a problem on my end here and I'll figure that out.

Just do a "Save As" and change the name slightly, like adding a 1 to it, and save it to a handy folder.

Just do a "Save As" and change the name slightly, like adding a 1 to it, and save it to a handy folder.

Click to expand...

Thanks! I'll give that a try.

That would be me that raised the tire size question. I wanted that beefy look. Our cars can wear some big tires and they look GOOoooood!