Speculation: the car weight would change as the brake shoes are worn down / eventually replaced. A minute difference but still a difference: https://www.wabtecc

Speculation: the car weight would change as the brake shoes are worn down / eventually replaced. A minute difference but still a difference: https://www.wabteccorp.com/freight-car/braking-systems/brake-shoes https://www.wabteccorp.com/freight-car/braking-systems/brake...