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Axle Balance Tandem hole rules by state Pennsylvania
Pennsylvania tandem hole rules: 41 ft kingpin to rear axle
For a 53 ft van, reefer or flatbed with a sliding tandem · Checked October 2026
Limit Pennsylvania limits the distance from the kingpin to the center of the rear tandem to 41 ft.
Where it applies: All kingpin trailers, statewide. Measured to the centerline of the rear axle group.
How to read it
Measure from the kingpin to the point halfway between the two trailer axles.
Source
75 Pa.C.S. §4923. Rules checked October 2026. Laws and enforcement change, so confirm with the state before you rely on this.
Set it in the app
In Axle Balance, open State rules and tap Pennsylvania, or plan a route through it. Pro shows which tandem holes are legal for your trailer and warns you before a slide would put you over a state's limit. New to sliding? Read how to slide tandems.
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Know which way to slide before you get back on the scale. Axle Balance is a free calculator made by a trucker. Enter your scale ticket and it tells you which way to slide your tandems and how many holes, plus your fifth wheel. Works offline in the cab.
Open the free calculatorEstimates and general information only, not legal advice. Laws change and enforcement varies. Always confirm on a certified scale and with the state before you rely on it. See the Terms of Use.