Caster is a stability angle, measured in degrees. The amount of tilt is measured in degrees from the vertical. 10min. 45 degrees. I think that there is a formula for this but cannot for the life of me remember … Offset (parallel or rim) is easy to understand. You'll now be given a value for nearside toe, offside toe and overall total toe angle in degrees. My rims are 16" and my tire size is 225/55 (255/55/16) Based on the above info, what is the toe-in mm? To convert these to degrees, divide the number of minutes by 60. You can get pretty close by decreasing the tire tread measurement by 25% to approximate the correct rim measurement. If you are going to use distance, you need to be certain what you are measuring from and how far out from the point of origin. Im wondering are there any charts or formulas on how to convert inches into degress to adjust camber, caster and toe? mm is what it converts to with your wheel tyre size & is not relevant to anything else except the spec book. Enter the Diameter of your tire on your wheel.Then the Camber Angle in Degrees, it can be POSITIVE or NEGATIVE. Still have questions? Each wheel 5min 0deg. With the number of marks accurately counted, you need to convert the number of marks to number of full turns of the knob. There is no caster setting for the rear of a vehicle. 286.4789 degrees / 57.29578 [degrees / radian] = 5 radians. The coordinates (Lat/Long) are projected as decimal degrees. The wheel alignment industry has changed over the years, fractions of inches used to be the standard, maybe mm in Europe. Here are the basic aspects of steering tuning. Then measured from the straight edge to the bottom of the wheel, 1/2" or 8/16". For example a TOE value of 1mm on a wheel size of 10” = 10’ (minutes of angle) yet on a 15” wheel it represents 8’ (minutes of angle) Vehicle manufacturers normally quote the Wheel Alignment specifications as an “Actual value with a plus or minus tolerance”. This is positive camber.