Why your new car vibrates at 65 mph even after the wheels were balanced?

Take it to a good tire shop and have the tires rebalanced and check the tires AND wheels for OUT OF ROUND at the same time. If you're hell bound on getting it done in one visit for sure, find a tire dealer with qualified technician with a Hunter Road Force Balancer. That machine was designed to cure all your problems, be it a wheel or tire out of round or simply out of balance. If you have a bad tire or wheel it will find it. Tell them you want a print out off that machine if they do find bad assemblies. It's the pitts to have a new car that has issues and the stealership just won't listen. I have never seen a stealership strong on tires either. That road force balancer can fix match mount problems as well when a tire just needs spun on a wheel to cancel a bad roll. Every tire and wheel has a high spot on a 360 circle. No wheel or tire is perfectly round. There are lots of bad new tires out there as well. This comes from 15 years in the tire business. Plus your factory tires as you know aren't the best anyway, even though they're new. Look at your UTQG specs on the sidewall (treadwear temp and traction,) you will see for yourself. Don't ever put the same tire on a vehicle because that's what it came with. Little do you know they just bid cheapest that year for that particular contract.....Also if your stuck on Michelin, BFG etc..........don't buy tires from Sears, Sams Club or Walmart thinking you got a smoking deal! They are called CLUB HOUSE tires and they are not first run tires like you buy from a true Michelin dealer. You can't even buy those same tires from a true Michelin dealer. They should tell you the same. Don't fool yourself.