Brake heat

[onyx lily]

Does the brake temperature have any influence on tyre temperature???

[kindred hull]

I was also wondering about this, and from some basic tests I think they don't. Not sure though

[cerulean nimbus]

I don't think heat spread from the brakes is simulated too, at least that's my experience

[onyx lily]

Thx

[kindred hull]

Huh, never noticed that
Interesting

[cerulean nimbus]

Well what is heat from the brakes, what is heat the tires get from friction. But imo the whole discussion is pointless anyway since you can't really change anything regarding brakes

[kindred hull]

It's not really that pointless, if it has an effect, you could use brake dragging in some manual rolling start races to get your tires up to temp

But if the effect is as small as shown in the above video, then it is kinda pointless

[cerulean nimbus]

Imagine having manual rolling starts

Kekw

Well don't you get friction by pushing brake and gas at the same time? Car wants to move forward but brakes using the tires working against it -> friction between tire and tarmac, or am i wrong?

[onyx lily]

I asked it because I'm doing a championship with safety cars, and I wanted to know that if I overheated the brakes it would heat the tires

So they don't?

[kindred hull]

No no, they do

Oh wait @humble hearth deleted the vids

hmm

[kindred hull]

I don't think you're right here

Because it's not like the gas applies some magic force which pushed the car, and the brakes resisting it, causing the tires to be dragged/deformed, the gas tries to rotate the wheel, and the brakes do the opposite, so the gas resisting the brakes only occure on the brake disk, not outside of it, in the form of tire deformation or smth

If the car is generally decelerating/accelerating, that's somthing else then, and in the case the tires will deformed and heat up a bit

But that does not have anything to do with the fact you're pressing the gas and brakes at the same time, that's just the outcome of how hard you press each one of them

Anyways the best way to test this would probably be to take a car to Indianapolis, and drag the brakes in a way that would keep the car going at the exact same speed, or close to that.

And then compare that to normally driving at that speed, without dragging the brakes (because even if they don't heat up while dragging the brakes, it might still be hotter than driving regularly)

[cerulean nimbus]

well the effect is close to zero. tried with the dtm2020 on daytona, 1000° brakes raised the tires about 9 K (from 35 to 44 inner side, but only left front, others where lower) over a lap with 160 kph and after stopped the tires immediately cooled down although brakes where still over 1000°

and for some reason my second monitor doesnt get the tire data from r3e anymore

ah nvm, i didn't worked because the game thought i was still in the pits

well after 2 laps and brakes at 1800° tires are up to 48° inner side

and i notices that the rears actually get hotter, although the bb is more front and temp front is higher too

[cerulean nimbus]

which is correlates with this

so it took me more than double the distance to get the tire surface temperature up to 45° with dragging compared to weaving (both at 160kph) also the core temperature was higher with weaving (i think 3 or 4 K). after i reached 45° left front inner side, i slammed the brakes, stopped the car and stopped the time it takes the tire to drop 5 K. with cold brakes the tires cool down 5 K approximately in 30 s, while it took 40 S with hot brakes

[kindred hull]

Oh actually with a car that is not 4 wheel drive, your right, my bad

[kindred hull]

Nice

so basically it is a thing, but not really useful for anything