I had an 82 Fiat Spider sitting in my garage for a couple of years undriven and finally want to get it going again. I have been running the engine on a regular basis, but I'm guilty of letting it sit on the tires. I took it around the block today and afraid that I've flat-spotted them, kind of a bouncy jiggly ride. Im going to do this a few more times. I'm hoping that when I get enough nerve to go a little farther that they might correct themselves, but I'm prepared for the worst and tire replacement. The car seems to be buring some oil, which I don't remember it doing. Thoughts on that? It needs a new muffler, so next week I'm taking it to a shop that works on foreign cars for them to give it the once over. Any personal insight would be appreciated.