[Lumberman]

My car just developed this same problem. I experience problem right at 70 mph and have BF Goodrich tires. Wobble started immediately after I adjusted tire pressure lower. According to the manual tire pressure cold is to as low as 18#. I set mine at 20. Wobble showed as soon as I hit the highway. Planned on having front wheels rebalanced but sounds now like this is not the problem.