I've seen a wheel come loose and start bouncing down the road...but this is a little ridiculous don't u think? xD http://www.youtube.com/watch?v=NmztVi86oV0 Notice it just randomly starts bouncing again for no reason xD on perfectly flat terrain =P It also doesnt lie flat as you can see at the end of the video for some reason...like there's extra collision there that shouldn't be. Here's an example of a real tire bouncing around =P (no it didnt fly off like in my video but you can see it barely bounces even when it hits the curb thing) http://www.youtube.com/watch?v=ErDx0A7TF18 Also here's a video I thought was just wtf xD but it shows how heavy tires really are...look what it does to the car it hits. (its a truck tire so its probably heavier but still, tires are heavy...trust me i know from having to change them ) http://www.youtube.com/watch?v=3vgmSc6ApQc
You do realize, the tire that you were pointing out in your video went straight up in the air and bounced around. You don't think that a real tire would bounce around similar to that?
yeah, its obvious when there's less energy there. It seems a little too eager to bumble around when its rolling. You can't win with tyre physics in NG, can you? now they're too bouncy. Although the wheels in Drive aren't perfectly round, its probably why it hops around a bit.
@BreadForMen: Not what I was talking about. I explained in my post that it's near the end of the video when the tire is just rolling along...its still bouncing and twitching out a lot. @Hati: Wait...it used to be less bouncy? xD Didn't know this. Also, I was going to mention something about them not seeming to be perfectly round...which is strange because they act perfectly round when they are still attached to the car...so...does it do some kind of model swap or something when it leaves the car? or are the tires on the car "fake tires" like most racing games do it =P
Tires are not round. Press L or K ingame to view the NB structure. That you see is how they're shaped. When you're driving with them at higher speeds the roughness isn't noticeable as the wheels literally jump from point to point due to how fast they're rotating. It's quite a bit more noticeable at much lower speeds.
Well shape and/or NB structure doesn't always mean collision too. But I just tried this and I noticed that at really REALLY low speeds (like under 1 mph) the car starts to shake violently as if rolling across a bunch of small rocks
The nodes on a n/b are the only thing colliding with the environment. The meshes are just there to make it look fancy. They don't affect the physics.