67 Pa. Code § 63.115
The fee for obtaining a higher registered gross weight for a vehicle shall be determined by multiplying the difference between the fees for the old and the new weight classifications by the applicable mileage percentage factors.
The provisions of this § 63.115 adopted April 29, 1983, effective April 30, 1983, 13 Pa.B. 1440; corrected February 24, 1984, effective November 26, 1983, 14 Pa.B. 661; readopted May 6, 1988, effective immediately and applies retroactively to April 30, 1988, 18 Pa.B. 2130. Immediately preceding text appears at serial page (87694).