So has anyone changed the toe in spec for wider tires? seems to me the wider tires with increased rolling resistance would create more pressure for the tires to want to toe- out as they roll down the street.

BTW...what is the toe-in spec?

 

I have mine set between 1/16 and 1/8 toe in. Been doing it that way since I had my TJ.

 

I've read that the spec is .15 degree, plus or minus .15 degree per wheel. I did a layout on a CAD system and it equalled to be .095" total toe in, measured at 18" forward of axle centerline.

This Caster/Camber/Toe Tool works great on the JK. It's made by Fastrax.