Oh well, more work for them when I bring it in for free service every 6,000

The better wheel weights are now plastic coated so they don't corrode wheels.

It is always better to have a two plane tire balance with weights placed on the extreme inside and extreme outside of the wheel.
Vibration happens in two planes.

When you balance a tire in one plane only, ie.weights in the center of the wheel (inside) it is not as accurate. A lot depends on how bad the tire and wheel combination are out of balance.

Look at your weights, if you can "see" the porosity of the lead, they used "black" weights meant for steel rim, scratching the crap out of your rim in the process. If they're glossy they're "gray" weights for the aluminum rims and it doesn't matter where they are. They just happen to be ugly on the outside and I'd insult the chastity of their wives/daughters until it'* corrected.

Sure good to have you back! I never knew the difference between tire weights

I tend to agree with 2000SilverBullet, based on my experience working at Firestone and Goodyear, and personally balanced approximately 1000 tires. If the tire and wheel combo doesn't need a lot of weight to balance then all on the inside is ok, if you have more than approximately 2.25 ounces,then it should be spread out evenly to get a more accurate balance. Also when you purchase new tires, most often you will see a colored dot somewhere around the tire, that is the lightest spot on the tire, that should be lined up with the valve to get a more evenly balanced tire. On a used tire if you find it takes to much wieght then you can always break down the tire and rotate it on the rim and try to rebalance.