Ok so I just did my first test with 6.0, specifically trying to find out about this tyre heating problem people are having.
I first had a bit of a blast around mojave with the Lotus 49, as I'd read somewhere that the changes to tyres have made the old tyres far more realistic. If you haven't tried the 49 yet, give it a go, it's bloody glorious. It doesn't snap hard like it did before, it is far more progressive with the slip angles, and feels much more how you'd expect it to. Great fun! Also, no problems with temps at all, the operating window on this car is enormous, and I was drifting massive circles on the skid pan without overheating them. This is to be expected, as those old tyres were designed like that, so all good there.
Anyway, I then got a little more serious. I've noticed something of a trend, both here and at the official forum, where the people most vocal about tyres overheating are saying they've been driving GT3 cars, so I jumped in the Mclaren 12c GT3, and went straight to Catalunya, as it's hell on tyres in real racing there, with all the long medium and high speed right handers, the heavy loads on the left tyres will easily overheat them if you're not careful.
Right, so I went out, and did a normal outlap. I don't usually push on an outlap, as it's pointless, but I don't dawdle around either. I noticed nothing out of the ordinary. I then put in 5 laps paying attention not to scrub the fronts on those long corners (It's tempting to wind a bit more lock on I know), and avoiding wheelspin, and I noticed the temps rose on the first timed lap up to around 104 degrees C, but then stayed around there pretty consistently.
When I was exiting turns three and four, I noticed the temps had risen a few degrees, but would come back down pretty quickly and stabilise. During this period, I felt the temps were far more "alive" than before, where loading up the tyres, even a bit, would result in small temporary fluctuations.
Then I went for a rough lap. Throwing the car into corners, and really pushing on the front in the sweepers, and within one lap left tyre temps were up to 125 degrees, and the tyres were dark orange. I also noticed with this dramatic temp increase, the back end was very lively mid corner on the final corner.
So the next lap I went back to protecting the tyres, and without going too slow I had dropped the temp by 10 degrees on the lefts in one lap. So I pushed for time on the next lap, not being purposely rough like before, but just trying to be fast, but smooth, and not worrying about loading up the lefts through the sweepers. The temps rose 10 degrees again, but the lap was faster than before.
The next two laps I tried to nurse the tyres to reduce temps, but while giving away as little lap time as possible. This was tricky, as I had to really be mindful of sustaining a high peak load on the lefts through all those hard long right handers, but without bleeding lap time. I managed to drop the temps by 10 degrees each lap, so in two laps they were back in the perfect 105 degree zone, but I had only gone 8 tenths slower on the first lap, and 9 tenths slower on the second lap.
So this had me keen to see if I could use the tyres in the right parts of the track, and nurse them in the right parts, and get as good a lap as I could without raising temps. I did a run of four laps, all quite quick, and each one was faster than the last, all of them faster than the lap where I pushed hard, due to not overheating the tyres by the last sector I guess, and in those four laps, my temps had only risen by ten degrees, from 105 to 115.
I'll test other cars, but so far I'm really liking how alive the tyres feel now. Before I could be lazy and just lean hard on the tyres lap after lap and the temps would hardly change at all. Now the temps are fluctuating constantly with every turn. They feel way more realistic to me this way. Maybe I'll find some cars or tracks where the effect may seem too strong/not strong enough, I don't know, and if I do I'll share it with you all, but so far I'm happy with what I'm seeing.
I will say though, that the one thing that concerns me, is the AI's physics don't contain temperatures, so while this tyre management is way more realistic, it might mean those of us playing career might have to drop the difficulty a bit. Although that's probably a good thing, as some races were ridiculously easy even at 100%, so maybe the career will be more challenging now. Anyway I'm ranting lol.