| It might be a long shot but you may just find on google a description of how to balance tyres while they are on the car without a machine. Many moons ago my grandfather (who was in the trade since 1918 and thus didn't have / believe in many modern machines) did it to an old ford that my father owned with similar problems. Basically (as far as I recall) it involves jacking the car up evenly so that the wheel is perfectly upright and then carefully allowing the wheel to fall to its heaviest point. Then add weight in the opposite side until it doesn't do it. Might not be easy to add the weight but may assist in checking if it is right (because of course it balances all rotating parts rather than just the rim and tyre) before spending large sums of money on other fixes.
Jon |