Tyres Tyres Tyres

You should find it yourself. I'm sure devs have some theoretical data and calculations, but I'm sure they don't know the data you ask for. Or if they have it, it doesn't the right one.

 

I'm pretty sure devs have a very good understanding of ideal temps and pressures for each car. I mean it's an essential part of racing and a thought that sim devs wouldn't know that info sounds highly unlikely.

 

I'm sure they don't know, but I'm not saying they are not capable or lazy, it takes a huge amount of time of testing to know that data. I think they have been very busy solving problems instead fine tuning the tires.

Temperature and pressure seems disconnect at the moment, being brake temp that rise the tire pressure more than the tire temp from friction.

From the experience I had driving some cars, I could tell that modern cars with downforse works well with 1.5 bars and old cars mostly without downforce work better with 1.25 to 1.35 bars.

 

My impression lately is that the tyre model is hugely forgiving. I've stopped worrying about cold and worn tyres in races, it seems to have little effect on overall grip.

 

Do engineers on the tracks have a guideline from God as to what will be the best pressure for their race? You should drive the car and find it out. You even have telemetry that will show the temperatures so it should be easy to see...

 

Depends on what you drive... Ultima GTRs for instance go very easy over 100C temp and you will see very clearly the tires performance decrease...
On the other side older F1s have difficult tires to warm up and it is very visible the difference between them running on too cold tires or warm tires.
In general I have noticed that the best results come with the lowest pressures that will prevent tires from overheating.
Also it is difficult to see the differences in a 10 laps race. But if you do a long race like 30 minutes plus you will see the difference in tires behavior and very clearly in the wear...
I think it could still be improved a bit by slightly reducing the cold tires grip but I think so far it's not so bad.

 

I must be a few levels below you guys when it comes to tire knowledge, pressure and temperature. Sorry for the n00b questions, but they kind of seem relevant in this thread so here I go:

I know "green is optimal", "blue is cold" and "red is hot". But I don't know if I'm supposed to compensate for non-green ranges just by changing how I drive, or if I need to do setup changes. For instance, if it's cold weather so that the tires never reach green temperature range, should I increase the tire pressure in order to heat up the tires? And if I'm driving Formula Trucks (in my mind gently) and the tires are orange after a few laps, is it okay to let them get orange as long as the wear is not too bad, or do I need to reduce tire pressure a little bit (unless they were under-inflated to begin with)? Should my only parameter for adjusting pressure be telemetry outside/middle/inside temperature differentials? So many questions.

 

I doubt you're really "below" anyone. It's just that a few individuals like to act like they know it all, when the reality is that they don't. The attitude in this thread towards a straight-forward, reasonable request is ridiculous, elitist BS.

What total horse manure. Every modern racing team will know the IDEAL operating temperatures for the tyres they are using, and that is what the OP is asking for. You can't just "find out" for yourself because... surprise... we didn't design the bloody tyre. Reiza will have this information since the operation of the tyres is an integral part of designing the car physics.

No they don't genius, but they DO know the ideal operating temperature ranges and therefore know what to aim for. If you don't have a target then you're doing exactly what the post above yours says... flying blind.

 

Get seat while wait for those numbers. When you build a tire you don't know with which pressure it will work better, you can input all the data and set the temp of the optimal grip, but that's not enough to know under which conditions it will work better. To know those values the tire have to be tested under several conditions.

 

In the real world it goes like this:
Racing Team receives tires from the manufacturer. With that, they also receive guidelines for the range of tire pressure they can use and how that relates to tire temperatures. Usually they use the track temperature to define the tire pressure which will be in the range of the recommendation from the manufacturer. Racing Teams usually don't do wild guessing about tire pressure.

 

What real teams do is testing. And figuring out which tires pressure/temperatures will give the best performance and if there will be wear issues. This means actually driving the sim and spending some time in it. What's so wrong with this? I know by now what temperatures are best for the few cars I am driving the most. Maybe some other sims have given you the habit to serve you the best setup and tire pressures, but as I was saying this is what drivers and their car engineers do for a living.

 

Tire manufacturers provide ideal operating windows for their product. That goes from the tire Pirelli supplies the SRO GT3 cars with all the way down to my street tyres, for which Goodyear recommends 2.4-2.5 bar for normal driving and 2.7 bar for highways.

That's probably not only to make the teams life easier, but also to show their product in the best possible light, und maybe also some kind of legal safety net.

The ideal temps and pressures are already in the game, how else could you guys have found them - so we're only asking for a way to let people know what to work towards.

 

I concur that testing will find the exact sweet spot, but the end user, whether that is a race team in real life or us as sim racers, should know a target range to begin with.

 

Would be nice if we could have a choice to have tyre pressures in PSI as well, bar means nothing to me and is not used in my country. Please Devs, pretty please with sugar on top.

 

Go to Options - Gameplay - display - display units and choose imperial

 

It was much easier for Kunos as there was only one pressure (or 2 if we include wets). Not sure if they did this for AC or how many other devs give this information (ISI/S397, S3, iRacing?) though as it happens SMS did give it out for PC2.

 

Fix one problem and then make another, lol