Hello Part16John,
Back off on right side brake drum drag or tighten up on left side brake drum drag. Also equalize all tire pressures to assure that all tire diameters are the same and verify wheel bearings are not failed/frozen. An airplane has independent braking, so, with an applied right brake tends to turn the aircraft around to the right, especially with tail wheel/tail dragger airplanes. This being normal for maneuvering. Four wheel cars and trucks however need equal brake pressure application for their normal maneuvering. If your car pulls to the right, the right is tight and the left is loose.
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