I haven't driven my imported Master Ace much yet, but I have noticed that it will randomly shake sometimes after driving for about 10 miles, it's a rhythmic shake, speed doesn't matter, and seems to go slower when I go slower until I stop, when I start again, it's gone. I though maybe a bump in a tire, but I don't see any. There is also a random chime that dings intermittently usually while on the highway, I have no idea what it is. It has about 85k miles on it. Any help is appreciated.