BASELINE 225 - Manual (Page 14)

10 • Important: Always read and follow instructions.
Setting Wheel Dimensions (DIM)
Before a wheel can be balanced, wheel dimensions
must be entered into the computer.
Definition of DIM
Figure 10 - W, D, and A Tire Dimensions
Note: Only use calipers provided by the wheel bal-
ancer manufacturer because others may not be the
same.
Note: A thick flange, on some aluminum wheels, can
effect the measured diameter. For example, a 16-inch
rim can have a measured diameter of 15.5-inches.
A2 = Offset
The distance measured from the balancer (“0” on
offset arm) to outer plane of the rim (outer weight loca-
tion). Typically used in ALU programs.
D2 = Diameter
The diameter as measured at the A2 weight location.
Typically used in ALU programs.
Figure 11 - A2 and D2 Tire Dimensions
W = Width
The width of the wheel at the
rim flanges, measured with the
calipers as shown in figure 12.
D = Diameter
The diameter of the wheel as
indicated on the tire.
A = Offset
The distance measured from
the balancer (“0” on offset
arm) to inner plane of the rim
(inner weight location).