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degree conversions

degree conversions
by mark gilbert on 08/26/03 at 16:55:06

How do you convert millimetres to degrees (minutes and seconds), as in wheel alignment. I think that there is a formula for this but cannot for the life of me remember what it is. Could you please help?

Re: degree conversions
by Robert Fogt on 08/27/03 at 02:35:06

I can help with toe in/toe out.

The circumference of the tire, is the measurement all the way around, a complete circle.  Therefore the circumference is equal to 360 degrees.

circumference / 360 = millimeter per degree

For example, if the circumference of the tire is 1000 mm, then:
1000/360 =2.77778
There are 2.7778 millimeters per degree

If you only know the diameter or radius of the tire, you can calculate the circumference with one of the following:
circumference = Pi * diameter
circumference = Pi * 2 * radius

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