- 297
- GTP_BonzoHarry
zodicus did a good job of explaining this[/URL], restated below in my own words:
yea it's called the traction circle. Wheels can only do 100% of any one thing, so if 100% of the tire's traction is being spent on braking then you can't turn. Which sounds like like a super-simple concept but you can't believe how many don't get it.
I've been in about a dozen on-street crashes (always as a passenger) and most of those were due to understeer. People trying to take some corner, the car understeers, obviously there isn't enough traction to make it through that corner, so what do they do? Turn the wheel in more!
So if 82% of your tire's traction is being used turning the vehicle then you can only brake or accelerate to use the remaining 18%. Which is why, when you're coming out of a corner (especially in a fwd drive) you can give it more gas as you unwind the wheel. Since less turning means less traction being spent on turning means more traction available for acceleration.