UUC software: wheel fitment calculator - try it out...

["Aaron Bohnen" <bohnen@xxxxxxxxxxxx>]

Hi everyone,

I built a graphical tire and wheel fitment calculator for use in determining 
which tires and wheels will work well on which cars (BMW's of course), etc. 
It's on my website. The address is at the bottom of this message.

It compares wheel and tire information for two cases. The most common 
scenario is one in which you would put the information from your stock wheel 
and tire package into one side of the calculator and compare your other 
potential choices.

It displays the tire sections graphically, showing the hub centres and tire 
outlines. Kind of like a video game. Well, not really that exciting.

It also displays the numerical values for the:

additional tire width inwards
additional tire width outwards
additional overall tire section height
additional ride height
additional tire circumference
change in final drive ratio

and has an interactive dual speedometer calculation routine. Input a 
speedometer reading and it displays the actual road speed. Input a desired 
actual road speed and it displays the corresponding speedometer reading.

The software is a snap to use - simply enter information in the boxes. 
Everything else is calculated and displayed automatically.

Very useful for determining how much extra room you're going to need in the 
fender wells of your 2002 for those 225/50/16's, etc...

***DISCLAIMER*** This software assumes that the nominal values for the width, 
aspect ratio, etc. etc. are ACTUAL numbers and the speedometer readings in 
your car with the stock wheel fitment are correct. It is intended for 
guidance purposes only and SHOULD NOT be relied on solely for fitment 
information. There are many more variables such as rim inside profile, etc. 
etc. that are not considered. I take no, zero, zilch, nil responsibility for 
anything you do. 

Anyway, here's the URL:

http://www.civil.ubc.ca/home/bohnen/tire_section_calculator_v5.xls

It's an Excel version 5 spreadsheet. All more recent versions of Excel will 
open it and use it without any trouble. If anyone wants a copy in a format of 
some other spreadsheet besides Excel please email me and I'll see what I can 
do to email you one.

That's it - just another midnight Excel project that's gained a life of it's 
own. (Anyone interested in a stochastic RRSP reliability simulator? A 2-d 
ballistic flightpath simulator with calibrated non-linear air friction? A 
multi-attribute decision matrix? A 3-parameter rainfall-runoff model with 
visual-aided calibration?) ... I really need to learn to resist midnight 
computing.

Anyhow, hope you like it. Please email with questions or comments.

best regards,

Aaron
___________________________________________________________
Aaron Bohnen                     email: bohnen@domain.elided
- -Ph.D. Student, Civil Engineering Department, U.B.C.
- -Technicraft Engineering Services

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