This is currently broken in Dirt 4)Īn important thing to remember is that, when front wheels lose grip, the car understeers because it doesn't have "enough" grip to turn. If the grip were to "run out", the car would slide (which is also the reason RWD cars oversteer when you step on the throttle, at least in other games. The grip in this case would be allocated between pushing the car forward and preventing it from sliding. The rear wheels of a Rear Wheel Drive (RWD) car for example, must usually do two things: Get the car to move (when on throttle) and also prevent the car from sliding.
Speaking in lamest, least scientific terms, the grip of each wheel is allocated to different functions in order for the car to obey the driver's instructions. There are two main types of grip you will need for this guide Straight line grip, which is the grip of your car while moving in a straight line and cornering grip, which is the grip of your car during a corner or while the front wheels are turned. Grip is affected by many various factors like the surface (ice has less grip while tarmac more), the tyre (tarmac tyres on gravel have less grip than gravel tyres on gravel, the weight they support and many more. This is not measureable in any metric way. Due to forces like friction, each car wheel has a specific amount of grip. Grip LevelsĪn important thing to understand before reading the rest of this guide is the grip of each wheel. If you're here just for this, I suggest you take a look at the "Differentials" section, particularly the Central Diff. This is not a guide on how to get oversteer and reduce throttle understeer to a bare minimum, a topic heavily discussed these days with the supposedly "flawed" Dirt 4 physics. I hope you find my guide useful as I spent a considerate amount of time and effort making it and remember, practice makes perfect so don't stick to just theoretical knowledge! Go out there and mess around with the settings yourself! Don't make massive changes before testing so that you can easily spot a flaw in a setup! And remember to also test in actual counties, not just the DirtFish rally school which happens to have very different grip levels. Lastly, a necessary part of tuning is testing. At first it can be frustrating since you won't be able to go into detail when changing certain things so hiring a better Chief Engineer is always adviseable (Main Menu>My Team > Staff >Chief Engineer) This guide is complementary to the in-game descriptions on what each car part does when altered, although I am sure you'll be fine even if you stick to this guide only.Īlso keep in mind that Dirt 4's tuning is unique in a way that the extent to which you can adjust your car's setup solely depends on your chief engineer's tuning skill. Greetings fellow rallyist! This guide is the best way to start your carreer as a proffesional car tuner.! Or not really, because all it will do is assist you with the in-game setups to get the most out of your car, whether that is a FWD machine, or an all out 4WD beauty.