Hi Rick,
I think toe in is usually defined as the difference between front of the
tires & rear of the tires.
Your method may be subject to some errors. Tire sidewall variations,
wheel lateral runout, & 2X4 width variations come to mind. With your
method, any lateral runout will give false readings.
The more accurate way is to raise the tires slightly & scribe a line
around the tread faces. Hold the scribe rigidly side to side & rotate
the tire. This scribed line will be independent of wheel & tire runout.
Lower & settle the car (roll it forward or backward a bit) & then measure
between the scribed lines, both front & rear. This is a very direct
measurment & leaves less room for errors.
This is also a good time to check tire/wheel runout by observing the
lateral variation as you spin the wheel. Hopefully, it won't be more
than 1/16" on each wheel.
If your reading of .09 is per side & = .18 total toe in, & is accurate,
it may be a bit much for radial tires. Usually something around zero to
.060 total toe in works well. However, if it drives well & isn't wearing the
tires, I wouldn't change it.
Dave Russell
BN2
Rick Neves wrote:
> I'm measuring the Toe-in on my '56 BN-2. It is driving real nice but
> I just wanted to make sure the toe-in was set within range.
>
> I'm using a laser level that I purchased for 10$ and a 2X4. Just for
> kicks!
>
> I'm getting a measurement of about 0.4 degrees and I think that
> corresponds to around 0.09 inches toe-in.
>
> My question is in regards to how the toe in is measured.
>
> I guess it may seem obvious to some but, is it the distance that the
> forward edge of the tire turns in relative to the center of the tire?
> I know that some people measure the rear edge and compare that to
> the front edge but then do they divide by two? My laser level
> technique is kinda cool, if anybody is interested I can put the
> procedure up on my website www.RickNeves.com
>
> Sincerely
>
> Rick Neves '56 BN-2
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