Irrlicht Engine

Hi,
I am trying to create a game where a car travels across a terrain, i've got the car moving and the camera and stuff working but i have a problem with Irrlichts collision detection. My car travels across the terrain no problem but at certain sections it just falls straight through the terrain. I thought it was because it was a hilly terrain but then i tried a purely flat one and the problems still there.

Anyone think of anything i can try or how to fix it?

Thanks in advance

Well, this seems to be a common problem with the Irrlicht collision manager...
If you want to stick to the collision manager you should have a search at the forum...

My advice is to use a physics engine (I prefere Newton) !!!
It's not that hard to understand and a lot better then using the colmanager...

ok thanks, i'll look into it.