To Be honoust , ive Given up The possibilaty of bouncing roadwheels .
Its not high on The list , and it seems there is a whole community that lobby,s for not implement it in favor of other features. Also susspect that Its just to hard to do because of current engine limitations or it would just take up to Much coding time , and is thus shelved for The sake of more other features that take up less time and trouble to flesh an upgrade.