Animating car tires

[noar]

are there any tutorials out there for making the wheels on my car turn automatically as i move the car forward or back?

thanks.

[pomme]

you may set expressions to the tire. When the car is translateing +, add rotation to the wheel in "?" axis. And add another line that if the car is translating -, subtract rotation to the wheel.

[fredc]

In reply to:
are there any tutorials out there for making the wheels on my car turn automatically as i move the car forward or back?

thanks.

Here is an equation that relates the rotation of the wheel to the distance the car has traveled.
RotW = (Distance/Radius) *(180/Pi)
Note:
RotW= Rotation of the Wheel in Degrees
Distance= Distance car has traveled. Most likely will be object.tranx or object.transz
Radius= Radius of wheel. Be sure to update this if you change the scale of the wheel later.
Pi= 3.14159

Just read up on expressions. You will essentially be applying this expression to one of the rotations of the wheel.

Hope this helps,
Urp