I'm all stock, they are 19" AMG wheels. 1 month ago I brought the car to the dealer with complaints of it not being smooth on the highway. they road force balanced the wheels and told me that all 4 of them were bent but could be straightened. I paid $150 per wheel to have them straightened.

After this was done, it drove very very smooth. However, after about a week or two the ride wasn't so smooth. On the highway, between 60-80 you can feel a shake in the steering wheel and the seat. It's so annoying!

I brought it back to the dealer, they re-balanced, told me all the wheels were bent again. Does this make sense!?!?

What should I do? Repair them again? I feel like that's a waste of money. I was considering buying these:

http://www.sonictuning.com/wheels/19...staggered.html

Any tips would be appreciated.

seems like you bent the wheels again

Do they really bend easily though? I don't do any rough driving, just a few normal bumps in the road.

The OE wheels do bend easy. Might as well buy a set of reps and have spares. You can probably find somewhere cheaper to straighten the OE wheels.

I had similar symptoms once and it turned out that i was spinning the rim inside the tire. I would launch From a stop and the rim spun about an inch when the tire grabbed. This threw the balance off.

Mark your tire and rim to see if they move. Mine turned out to be the lube the shop used to mount the wheel. It took me like a year to figure this out.