Both systems are equally accurate. The differences are typically user preference.
There are 2 main differences
- The application used to change wheel/rim sizes for measurement. The 4th Gen Pro has an insert for wheel sizes every inch. You unscrew the attachment pin and move to the correct wheel size location to change. The 4th Gen Elite Slider is slotted to allow you to loosen the pin and slide to the new location for the change size and adjust.
- The 4th Gen Elite Slider comes with 2 digital gauges, one for each side. The 4th Gen Pro comes with one bracket and gauge you move when you switch to a new rim for measurement.
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