Toe (Video clip - Choice of download speeds Broadband (150k+) or Dial-Up (28k or 56k))

Sign convention
Positive Toe is the leading edge of the wheels closer together.
Negative Toe is the leading edge of the wheels further apart.

Our advice would be not to refer to toe as toe-in. For example negative toe-in is toe out! Better to simply say the car has negative toe or is toed out.

Individual Toe
Individual toe is measured from the vehicle centre line
If a total toe figure is given divide it and its tolerance by two to gain the individual value. Individual toe can be thought of as a per wheel value.

i.e. Total toe + 0deg 30min tol. +/- 0deg 15min

Individual toe + 0deg 15min tol. +/- 0deg 7.5min

Units of measurement
Toe can be measured in mm or degrees and minutes.
A common mistake is to simply state a toe value. I.e. Ford Sierra +2mm.
However there are various worldwide conventions as to where this is measured. For Europe the norm is to measure at the edge of the wheel rim and hence a diameter of the rim must be specified.

So to correctly specify the toe for the Ford Sierra it should be stated as +2mm for a 14" rim.

The problem is that fitting different size wheels would result in a different toe figure being required!

The solution and the Pro-Align standard is to always measure and record the toe as degrees and minutes. (Or decimal degrees if you prefer). This value is irrespective of wheel rim size fitted and is less liable to error.