[ChrisM911SC]

Thanks for your reply Jack! Sorry for my lack of technically or mechanically correct terminology. You can't tell this is my first 911, can you? I'm actually quite embarrassed as I've owned several hot rodded bugs. Anyway, I'll try the balancing on the the tires and see what happens. The original problem "two broken bolts" brought on a feeling of a wheel coming off due to loose lug nuts or a tire going down. I've checked all of my tire pressures and they're all in spec as well.