It’s bugging me now this. Doesn’t matter what car I’m in but tires lose their heat worryingly quickly on Le Mans. Even doing 200mph down Mulsanne straight, in the daytime, with clear weather, even soft tires lose their heat and they turn blue on the HUD with the temps plummeting in the telemetry.
I’m no tire expert and correct me if I’m wrong but surely tires shouldn’t drop off heat like that to the point at which they’re cold and blue when screaming along at 200mph?
Tires may get cold on straights even if you’re going fast. On a straight track the tires won’t have a lot of friction and they will actually get “cold”. They’re still warm, just not as warm as they could be. Most race tires have a very high temperature operating window and in many cases the only way to warm up the tires is to generate friction by weaving or by taking corners.
Maybe add a little toe to create a bit of tire drag in a straight line to maintain heat.
What @booty0 said is correct. Adding a bit of toe will generate more friction on the straights since the tires will be rolling at an angle instead of being 100% parallel with the direction of the car.
Be aware, however, that this will also tend to increase tire degradation (how much? It depends on the situation) and will change the handling of the car, especially at corner entry.
Rolling Friction much less than Sliding Friction. Turning and Braking heats the tires.
Is this even implemented in the game?
Yes you are correct they are supposed to get heat from driving at 200Mph
The frequency of tire deformation is enormous at this speed
“Tires may get cold on straights even if you’re going fast. On a straight track the tires won’t have a lot of friction and they will actually get “cold”. They’re still warm, just not as warm as they could be. Most race tires have a very high temperature operating window and in many cases the only way to warm up the tires is to generate friction by weaving or by taking corners.”
In this game yes, but as he said it’s not how it works IRL.
I mean they should use maybe a couple of 0.1s psi at best…nothing drastic.
What are your temperatures at the start of Mulsanne, and what are the temperatures right before the braking zone?
I believe Forza is simply telling you the tires are below optimal temperatures, not exactly “cold”.
Also, you might be running temps that are on the lower end of optimal when they are “warm” on Forza’s HUD. Check the temps in telemetry for the actual numbers.
Yes, but you have to have the race suspension installed to make these adjustments in any car that isn’t already a race car.
I dont think that level of physics in implemented. From telemetry it’s clear that the left tires and right tires have same amount of degradation and it doesn’t matter if the circuit if clockwise or anticlockwise. Your point is totally valid in real life but in the game it’s not present.
I don’t think it’s as extreme as it should be on some tracks, but I have seen a single front/rear degrade before it’s opposite partner. Seems to happen more so on FWD vehicles.
Interesting, I haven’t checked for FWD, but I think it’s very minor even in Multiplayer where there’s 3x or 4x times degradation. makes me feel that they have dumb downed the tire degradation/heating/flexing physics to almost an arcade level.
High speed driving and tire heat according to Bridgestone. Not according to me or otherwise ideas spread throughout the forums.
Bridgestone says:
High-speed driving – Internally a tire generates heat based on the speed of tire rotation. Going faster than a tire’s maximum speed rating builds heat and may lead to premature tire failure. While the idea of driving slower may not sound appealing, the time saved not having to deal with damaged tires or even an unexpected tire failure will far outweigh a little time lost at a lower speed.
Once stated on the old top gear while James May was testing the Veyron for top speed. “At the top speed of this car, the tires will only last 14 miles, but that’s ok because the fuel will only last 12”.
Based on this, I would say no, the tires shouldn’t cool on the straight at LeMans. But then I don’t believe in the inerrant accuracy of the Forza physics either.
On it’s own this statement is correct but speed is not the major factor that determines temperature. Taking the rubber been same, the pressure and surface friction determines the temperate. If the engineers set the temperature to be optimum on a straight the tire will blow up/degrade much faster when the section of the circuit comes where there are a lot of turns. The pressure is set such that heavy braking and fast corners won’t burn the rubber in a couple of laps.
The Bridgestone info sounds more like a safety video…
It all depends on the tire, it’s compound and structure. What was it built for? Commuting and racing are very different applications.
Ever see a tire so deformed it’s no longer round?
It’s just going straight so it must be cooling down.
Air resistance increases with the square of some mathematical equation. I don’t know what it is. But at 200mph a tire isn’t going to be just rolling along. Threre will be considerable slippage between tire and pavement. Several times more than at 100mph. Regardless of tire type.
The information I posted came from Bridgestone, don’t argue with me about it. Send an email off to Bridgestone and see if they will answer the questions.
My personal thought is the physics and frictional coefficients of the game are screwy.
