> One thing I've noticed is that when you take a sharp turn on a mountain bike, you tend to move the bike away from your body. But on a road bike, you maintain

> One thing I've noticed is that when you take a sharp turn on a mountain bike, you tend to move the bike away from your body. But on a road bike, you maintain that alignment with your body and the frame. I don't know the answer but will toss out a guess. I'd speculate one of the biggest differences is how each bike is used and its intended design based on that use case. Centrifugal forces combined with traction of tire to surface will be very different between road bike tires at high speed on pavement versus mountain bike tire and low/moderate speeds on dirt. Beyond that, a mountain bike is often rode through technical terrain that requires dynamic balance by the rider (rider strategically shifts weight over bike) - whereas road bikes appear to be rode with a more "static" balance between rider and bike.