Quote from Ball Bearing Turbo :

I have one thing to point out, that may or may not mean anything here...

OR, there are simply multiple factors contributing to smoke being generated, like 1. current temp and 2. amount of energy exerted on the tyre

I seriously doubt we have surface temperature yet, as usually Scawen is someone who likes to show off such things. For the same reason we have the temperature measured from the top of the tyre, because otherwise he'd have to visualise the tyre deformation in the F9 view. Showing an additional bar for surface temp would be stupidly easy compared to that.

Quote from Ball Bearing Turbo :

If you warm the tires by doing a brakestand, they start to smoke long before the indicator begins to show an optimal temperature (green). This means that inside the sim, the portion of the tread in actual contact with the road is a "red" temperature, hot enough to smoke even if the indicator only shows that it's approaching "green".

I'm not sure for that. Smoke is there very quickly, but there is no difference in grip due to the 'red' invisible temp of the 'top' of the tyre. While doing brakestand, we can somehow see grip changes looking on rpm tacho. It drops a little rpm at green temps, and then rising up on red temps.

But there is one more thing I can't explain. After that brake stand, when you step on the brake pedal, tyre is gaining another 1-3 degrees of heat from 'nothing'!
So you can be wright. It can be that invisible hotter treat.

Quote from Drift_junki3 :

I guess that all makes sense, but it doesn't explain why when I lock up the brakes I get a huge trail of smoke but don't when doing a standing burnout (brakestand, linelock, skid) as the heat generated would be relitively similar.

When you lock up the brakes only 1 portion of tyre is in contact with the ground till the lock up ends so all the pressure is on that portion only. But on standing burnout the tyre keeps turning so every portion contacts one and after.The pressure is less on the portions.Thats why locking up generates more smoke.

Edit: By the way, shouldn't we have better looking smoke if many smoke generators were placed on each portion of the tyre instead of one only on the tyre-ground contact area?? Would it eat up cpu time??

Quote from pasibrzuch :

But there is one more thing I can't explain. After that brake stand, when you step on the brake pedal, tyre is gaining another 1-3 degrees of heat from 'nothing'!
So you can be wright. It can be that invisible hotter treat.

That's a good point, I always wondered why that happens.

For the smoke, I don't think the smoke generation has completely changed from old versions (before tyre heating), it seems possible to get smoke both from an overheated portion of tyre and from sliding with low temps.

Quote from ZORER :

Would it eat up cpu time??

it would eat up tons of fps because for some reason the alpha and 32 bit code is pretty effing slow atm (at least on nvidia cards)

It would barely eat CPU time, but eat lots of GPU time

Quote from ZORER :

Edit: By the way, shouldn't we have better looking smoke if many smoke generators were placed on each portion of the tyre instead of one only on the tyre-ground contact area?? Would it eat up cpu time??

I know it prolly wouldn't happen, but DAMN it would look/be cool

Quote from ZORER :

Checked the replay again but couldn't see any flat spots.I didn't do a big lockup i was trying to be gentle to the tyres. The tyre indicator doesn't show any flatspots even seconds before the blow.I can't remember the heat of that section and it doesn't say it in replay but the red color goes back to the green in a straight so it shouldn't be that hot maybe. Combination of heat and wear amount might have caused this. i did some lockups but not big ones it doesn't seem to have deadspots even after the blow... Maybe it was a faulty tire.Is this sim that real??(wish it is)

Flat spots can be very small (only one of those section might be flatspotted), thus the tires might have spun too fast for you to notice... In addition, a MPR isn't very detailed, I even think it takes an average of temps and tread, so I don't know if you'd see it anyway...

Quote from bbman :

In addition, a MPR isn't very detailed, I even think it takes an average of temps and tread, so I don't know if you'd see it anyway...

I think you've hit the nail on the head there

Quote from pasibrzuch :

I'm not sure for that. Smoke is there very quickly, but there is no difference in grip due to the 'red' invisible temp of the 'top' of the tyre. While doing brakestand, we can somehow see grip changes looking on rpm tacho. It drops a little rpm at green temps, and then rising up on red temps.

Quote from Bob Smith :

For the smoke, I don't think the smoke generation has completely changed from old versions (before tyre heating), it seems possible to get smoke both from an overheated portion of tyre and from sliding with low temps.

Hmm.. Something is interesting here, that's for sure... I always thought the temps went up afterwards a tad as heat was transferred from the surface of the tire, but then the first quote above doesn't make sense if my theory happened to be correct... The bottom quote supports my hypothesis since I can't imagine smoke not being related to temperature, since it clearly is in the former case you mention Bob... It's just a visible exploit that we can see a puff when the overheated tire "pad" touches the road, but that part is for sure based on temperature given the data/circumstances, so why wouldn't the latter case be as well? Hmm..