The accuracy on these units is outstanding, down to .001 degree, the same as the new Cartek and Hunter units. When this machine was produced, Bear out-sold all other competitors by a mile. It was by far the best machine going and is still just as accurate and repeatable as any new machine out there.

This Series II machine was the first PC-based equipment of its type that used standard, off-the-shelf PC parts, where all others were using very expensive proprietary boards, printers, and monitors. The D-4 series was also the first to incorporate a full color monitor. Bear held the sales lead with this model for many years. It even has a built in "Toe-Calibration" feature that is menu driven, making it quick and easy for the operator to check and correct toe calibration without a service call.

The wheel base for four-wheel and thrust-angle alignment was designed for 12  feet length on these models, and although we test at 14 feet,  we can only guarantee 12 feet.  Wheelbase lengths beyond that can be aligned using the "two wheel" mode where only the front two sensors are used.  Current vehicle specs for these machines are no longer produced; however, readings for any vehicle at all can be quickly taken and read on the screen without selecting a particular vehicle.  The operator would then simply compare the screen readings to a printed copy available from many sources, including alignment products catalogs available from most parts stores for free.  If desired, the operator can enter specs for a specific vehicle at any time to add to the existing database and have them available for re-use next time.  The benefit of this is "Green" readings for "in-spec" readings and "Red" readings for "out of spec" readings versus black and white readings for no specs selected.