Need help figuring out what size shim I need for rear toe

[shortcircuit971]

My passenger side rear toe is 0.25 degrees, while the driver side rear toe is .43 degrees. Now according to this service bulletin (http://www.dmcnews.com/bulletins/ST-34-1.82.pdf) in the middle of the page it says "NOTE: 1 shim = 1.1 degrees (1/16 inch)".

So does that mean, after a little extrapolating, that I need to find a 0.010 inch hardened shim and sandwich it between two oem shims to get as close to perfect as I can? Will that work or will it still fall out since it won't be a factory shim?

[WelmoedJ]

As you probably have already noticed, the rear toe-in has to be .12 inch (3mm).
That's .06 inch (1,5mm) per wheel, alike the front wheel toe-in.

Somewhere I had information about the degrees, but can't find that info.
Perhaps others can provide such conversion info.
Should I find it again, I'll post it here.

[shortcircuit971]

As you probably have already noticed, the rear toe-in has to be .12 inch (3mm).
That's .06 inch (1,5mm) per wheel, alike the front wheel toe-in.

That is correct, and the Hunter alignment rack I'm using already has DeLorean in it's built in list of cars surprisingly, and I cross referenced them and they match the numbers in the workshop manual. Front and rear toe comes out to 0.24 degrees toe-in for each wheel (positive toe), so I just need to get my rear driver wheel into spec since its at .43 degrees. I can't use a stock shim because the TSB says a stock shim will affect the toe by 1.1 degrees.

I'm just wondering if it's safe to use a non-oem shim sandwiched between two oem shims to fix that last .19 degrees needed to put the rear left wheel into spec, and if my math for a .010 inch thick shim will correct it.

[David T]

You can use your math to get close but when you tighten the bolt it tends to squeeze things so you always have to add a smidge. All specs like this have a range knowing that you will not get exactly the value required. As important as the individual toe of each wheel is, I would try to get it equal side-to-side. After you get it write the # and sizes of the shims in marker on the frame.
David Teitelbaum