first of all sorry for my bad english. i think it's wrong tyre physics fault in the game. if you see any car flip over videos you'll notice that tyre grip don't allow tyre to slip, while car is rolling-instead grip increases at ground contact moment and tyre absorbs car and it continues rolling. but in rage tyre slips and you canno't flip over realistically until car's mass center is too high, but that's unrealistic and you should raise mass center so much that car will flip over each time you steer.
i try to explain why it is happening: rage has simple and unrealistic tyre parameters: "(Wc+) m_fTractionCurveMax" and "(Wc-) m_fTractionCurveMin" first parameter is maximum tyre grip and second one is minimum tyre grip(slip). and rage determines which parameter to use looking at "(Wc-) m_fTractionCurveLateral"(mostly 14.5 in gta but in real life tyre rubber best value is 7-7.5) this parameter is angle of vector of straight vector of tyre and cornering vector. if cornering angle exceeds the value written under "(Wc-) m_fTractionCurveLateral" parameter than tyre just slips.
p.s. you still can increase car metal friction and elasticity coeficient to 0.5-0.6(common\data\materials\materials.dat) to somewhat get close to real crashes. also increase rubber elasticity to 1.0. maybe this will get you close to what you want.
for more information on tyre physics just google "Pacejka tyre model"
This post has been edited by levmans on Thursday, Aug 2 2012, 16:25
if R* would have made by default realistic car rolls . you would have be rolling at each corner , as everyone here drives above real life limitations . i think that this has been done by default like that for gameplay . but i also think that GTA being what it is . if you want a very realistic car behaviour you can get it
raptorscream i forgot to mention: you can set "(Wc-) m_fTractionCurveMin" at high values like 5.0 or even 10.0. but keep "(Wc-) m_fTractionCurveLateral" value at 20.0 or 25.0 to avoid flipping on each corner. if doing this you will not have to raise car's mass center and you will get crashes like in hollivood movies: http://www.youtube.com/watch?v=qesPh-7gkDQ
but that's ONLY for making crash movies. otherwise it's unrealistic values and car will not move realistically. luck .... i tried taht and it's not working as i expected
This post has been edited by levmans on Friday, Aug 3 2012, 09:15