Making Best Use of Telemetry for Tuning on Track

[PTG_Baby_Cow]

@McFuu

Dampers: this is essentially the resistance to expansion or contraction of the springs. Springs need to be controlled, and this is the control. There are different ways to go about these. There are formulas, different frames of thought, etc… Majority of my set ups fall in the 7 to 9 rebound with 2-4 bump range. Bump will always be lower, but a fair margin, in real life application that’s because Rebound is actually responsible for controlling sprung weight of the car etc, bump controls the unsprung weight of the wheels, resisting their compression into the car.

Forza doesnt see sprung vs unsprung weight. Bump will not always be lower because this isnt real life. There are many setups where I run a super high bump low rebound. your range is close to where i typically end up except im usually a bit higher or lower, but dont be scared to exit that box. Min/max works too well on lots of cars and even doing them inverse of what you expect. It also appears i accidentally deleted your mention of aero. Forza aero is a constant and works more as if theres a grip/drag multiplier. The force doesnt actually increase as the speed increases.

@McFuu

ARBs: Harder set up (spring rate + damping) harder the ARB setting, and vice versa. Tune by feel on sweeping corners. While ARBs may give a slight effect to turn in grip, they generally rear their issues on steady state cornering. Car is understeering, lower front arb (relative to rear), oversteering, lower rear. If the whole car doesn’t like to give you slight adjustments in the corner, try taking a couple of ticks out of both ARBs and go from there. If the car is sluggish to accept adjustments, raise both ARBs. Any issue that you can find from telemetry is better to just go by feel.

I agree with everything except the first sentence and with forzas physics in most cases you want the softest setup u can get away with usually.

@McFuu

Camber/Caster: Camber is another funny one in this game… basically if the car isn’t a race car I find 2.5-1.5 is generally the range I want on both front and rear. Camber is tuned per track, and really you are going for an average here. Trying to get that magic 0 out of every corner isn’t going to happen. Use some common sense, if the track is 8 hair pins and one sweeper, don’t tune for the sweeper. But between 2.5 and 1.5 it’s a pretty sweet magic spot. PS Caster increases your negative camber on turned wheels, so be careful with it. FR I’m usually at 6, AWD 5.5, and FWD 5-5.5.
Camber is one of those setting that it works so far off from reality that it’s hard to be definitive about it. In real world the type of tire, rake angle, caster, will all be taken into consideration. Tire choice being the biggest here, sticky tires apply more force on the suspension, requiring more caster, if Forza was more realistic in this light you’d see race tire camber 3-3.5, Sport would be 2.0ish, and street would be 1.0ish. Forza doesn’t seem to care that a street tire just doesn’t have the grip to require the general 2.0 caster most cars get.

@McFuu

Diff - This is half personal preference and half function of the track. My FR cars are usually 60/25, at least that’s my jump off. Usually I want equal amounts of on-throttle rotation vs off throttle rotation. You know when you are in a corner and you go from accelerating to decelerating and suddenly the car isn’t tracking around the corner the same anymore, or when you get on the throttle and you start to understeer or oversteer, look at your diff.
For Rear and AWD this is going to be pretty similar in settings, but… you want both accel and decel to be as low as possible. The description is a bit vague but 100% means locked diff, 0% means open diff. Unless you are a drifter or drag racer, a locked diff is not a good thing, and you want to be closer to the open diff side. I also have a favorite spot for tuning diffs, Bathurst on the uphill S curves (turns 4 and 5 I believe). So the feel you want out of them is prefference but, high accel to the point that you get vehicle rotation and you can turn with throttle is what you want. Too much accel and your tires will both spin up and you oversteer, too little accel and the inside is going to do [Mod Edit - Abbreviated profanity, profanity and profanity that is disguised but still alludes to the words are not permitted - D] it wants when you need it to grip. The uphill S is perfect because it unweights the inside wheel, I find if the accel is set right, these 2 turn will cause a bit of chirping, basically the second you lose grip it locks and then releases immediately. You want that on just these 2 turns only… But the right setting here for the aforementioned issue seems to be pretty solid for every other turn in the game. Decel is more of a feel, excessive locking will cause oversteer, I usually use the go past and come back method. If I’m at 25 and I’m not getting the off throttle rotation I want, I go to 35, when the car usually becomes a bit of a pita, I start going down, by increments of 2 or 3 until I feel close to what I want.

You have Decel backwards for the way it works in Forza. The lower the decel the more off throttle oversteer you are going to have. Increasing the number will make the car understeer more. Also, you want to be as close to 100% as you can manage for accel not as close to 0%. The higher the number the greater the propulsion from both rear tyres the quicker you are going to get out of a corner. The lower the number the slower it is going to be exiting the corner because you are only propelling from the outside tyre while the inside is simply dragging. This is why it creates exit understeer.

[Gryphon962]

@PTG_Baby_Cow

…

Forza aero is a constant and works more as if theres a grip/drag multiplier. The force doesnt actually increase as the speed increases.

…

I’m not sure about that. Take any car with a lot of aero onto LeMans, stop, and with telemetry on, note the suspension travel is ~50%. Then accelerate down the long straight up to top speed; as you get faster you will see the suspension compress under load. I typically see ~60% at full speed when its 50% standing still.

[EnlightedTao]

Personnally for now , i use the Télémétry , only for look to the best grip at which température degree it is , lol thats all !

[Cy_5th]

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