online you cant lose the wheels on anything but offline i think they do come off

huge hit, but i agree with you, there should be more realistic damage in a possible toca race driver 4

I read recently that the reason that the damage to the cars is often pretty limited and the crashes not so very extreme in realistic racing games is that the racing leagues don't want to look as dangerous in the games that they really are. Maybe that has a little something to do why the wheels can't come off. If they could you'd be able to make them fly over the fence and into the crowd. In any case it's a shame.

for some reason on toca3 u cant lose wheels on the indy cars

Yeah. That's a thing I wish they would have spent more time on. I think all openwheelers should be more fragile but IRL cars in particular.

indy cars are difficult to kill aren't they?