Not only cars but boats and aircrafts speed are also increased.
The changes are made for the original cars of the GTA V so the originals car won’t trouble with any sort of crashes or abrupt lag, but the cars added through mods might give you some troubles so, beware of that. One thing that can be considered as a drawback of this mod is that it does work in online mode. To implement the realistic effect, all cars have been modified. In GTA V we have seen cars doing some funny stuff when you land them from a certain height and you immediately think that this can only happen in the game while in reality, the car will be totally wrecked. The aim of the developers with realistic suspension for all car’s mod was to replicate the realistic suspensions.
