Algodoo

Good idea. I think the speed at which the brakes heat should be a multiple of the wheel's angular velocity (like, if it goes to 20 rad/s the brake stays at the same temperature, if it goes slower it cools regardless that it's moving) and you could make it like this:

brake temp = brake temp + (scene.my.X / 200 - wheel angVel / some big number)
Try it, that would be more realistic

This is realistic (isn´t it?), it use toImp(2) = torque applied on wheel while hinge braking, so if you go slow with heavy truck, or fast veth light car, brake temp. will raise realistic, or no?
Or you think about that, if i brake a bit, wheel do not heat up, because it can be cooled enough? This feature is in, too, but this number is really small
Note: Try to use joystick (I have racing wheel, but here i can use only pedals)