One of the things I've discovered is that since the shops in NY have moved away from lead weights, wheel weights are larger than they used to be. The significance of that is that when they put clip on weights on the inside of my wheels, they sometimes interfere with the outer tie rod ends. Not only does this produce a regular vibration, it can tear the rod end boots to shreds. And sometimes the weights are just knocked off the wheel. When I have my wheels balanced, I now ask that they use adhesive weights on the inside of the rim.