Does anyone else get small vibrations when driving around 40mph and 60mph? I brought my car into Acura and they told me that this is how the car should drive. They continued to say that these mph were the car's sweet spots. If I keep my car at 40mph +- 1or2 mph then I will get small vibrations. Same thing goes for 60mph. Please let me know if anyone else is experiencing these issues or normalities.