Auto Fitment Calculator
 

Hi all, I've compiled a ton of information floating around on this forum, and used some of my coding experience to pull together a real-time fitment calculator.

The way it works is, it defaults to the stock tire size, and allows you to compare tires. You can also select front or rear fitment.

http://frsproject.magiclabs.io

Feel free to ask questions.

- 1 pixel equals 1 millimeter.
- 1" drop = 2/5mm offset tuck. (f/r)

*UPDATED*

I have added:
- Verification (FT86 Users can now vote!!!!)
- Fender Gap distance.
- Offset From Flush distance.
- Camber
- Wheel Width
- Graphics!
- Comparison Line
- Ability to view: Wheel, Tire, Hub, or Rotor (more accurate version coming soon..)

I'd appreciate anyone confirming these numbers.

Cool. Good job

AWESOME JOB! Is there any way to include camber in your calculator? That would really complete it.

Thank you!

nice job!

there's one downfall about tire measurements though. a 215 oem tire will have slightly different tread width than a 215 sticky tire. i'm not sure how tire manufacturers choose to measure their tire width.

Thanks guys. There's definitely room for error, so don't take this as the be all end all. It is purely to get an idea of how different tire sizes, offsets, and ride height relate to the fender.

I'd be happy to try and calculate camber, but would need a good technical source on how to calculate it.

Really cool alternative to the miata tire calculator.

Something's wrong. It shows the outside of a 245/40-17 with stock +48 offset being at the same location as the outside of the stock 215/45-17 on +48. The two should be centered, with the 245 having the outer sidewall 15mm further outboard, and the inner sidewall 15mm further inboard.

Should look like this:
http://www.willtheyfit.com/index.php...&Submit=Submit

Thanks for the tip. I did recall this during the coding process, but forgot about it after the fact. I've fixed this.

Kickass :D

You are a genius sire!!!!!

I like it, but it should really have rim width as a factor in there somehow....

also, the fender gap calculation can't be right. I just picked a tire that was 9mm taller in diameter and the fender gap shows 9mm less...shouldn't it be 1/2 that?

Awesome !