tire balance issue
Model: 2000 Bonneville SE
Issue: My old company car. Had Firestone FT70c put on at 35k. Dealer had a LOT of problems getting them balanced. Company guideline only allowed balance and rotation every 10-15k. At rotation, tires constantly shook at highway speeds above 70. Could not rebalance.
Just changed out for Affinity HR tires. Plus brake job (metallic pads) and computerized alignment. Dealer inflated tires to 35PSI. At speeds above 60, it'* like riding a horse.
Any one having issues trying to get their bonny properly balanced. I saw the tech bulletins, etc. I don't think it'* tie rods as it all started after the first rotation. I don't believe a bent aluminum rim would act like this, would it?
Thanks for any help.