1934 ford toe in

[Bored&Stroked]

Originally Posted by cas3

You should not use the tread on the tire, it is not accurate. I wrap once around the tire with masking tape, then spin the tire while holding a marker pen firmly to make a nice line around the tire, and measure off that line. Its true then, even if your wheels and tires are not

Yep! In alignment shops, they have a little 'marker device' that scribes/marks a line in the center of the rubber.