I am 5'4", 110lbs. I drove a long distance (only 100+ miles) for the first time last week. I felt like I was sitting on a rock. My but was so sore & it did feel numb after a while. We just sold a 3 series BMW, that was the most comfortable ride. With all the service problems I've had, I'm starting to regret my purchase. That FX45 is starting to look a lot better these days. Bummer.