I bought tires for my 73 SS years ago and when they mounted the tires, they put the weights on the outside of the rim. It was months later before I tried the trim rings on and by then, wasn't worth the hassle to get corrected.

Flash forward a few years and I was getting tires on my daily driver(at a different shop) and I asked the sales guy at the tire shop about it. He seemed to think that mounting weights on the outside was the norm but if I brought my car to them they could "check into it".

Is it possible to have the weights mounted on the inside of the rim so I can get my trim rings back on?

You can put the weights on the inside, its called a static balance. Its not as good as weights on both sides (dynamic balance) but it looks nicer though.

Dave

I have weights on the outside of my rims and trim rings cover them pretty well. You can also get the stick on weights and have them ballanced the same as aluminum wheels where they use no weights.

As mentioned, for the best balance the wheel must be dual plane dynamic balanced and that requires weights on both the inside and outside lips. Dual plane dynamic with road force measurement is even better!

If the tire shop has a Hunter GSP 9700 with the measurement arms a pseudo dual plane dynamaic balance can be achieved by clip on weights on the inside beads (or stick on weights all the way to the back of the hoop) and stick on weights on the inside hoop of the wheel right behind the spokes. The machine will automatically drive the wheel and the arms tell the operator where to place the inside sticky weights.

That being said, it's hard not only to find a GSP 9700 with the measurement arm option but it's nearly impossible to find a tire technician who has read and understood the 120+ page users manual and knows how to use all the neat features. :yes:

That being said, clip on weights should fit behind a trim ring no issue and in that case I'd do a dual plane balance with weights on both inside and outside lips.