Part Reader Submission, part public experiment, longtime Aussie bloke Hash tipped us off to this one, though his original post was made throughout a thread on the Steam Forums dedicated to the issue. We’ve cleaned up the grammar and organized the results a bit, making this a much easier read for those who can’t be assed to visit the Steam forums.
Regardless, Hash has discovered a fairly fundamental problem with tire wear in Assetto Corsa, a problem that was seen in previous versions of Project CARS prior to the Version 7.0 patch. No matter what angle of camber you’ve selected for your car setup in Assetto Corsa, tire wear is… It doesn’t work as it should.
So I wanted to run some GT3 cars in AC to compare the various GT3 mods. Running the vanilla McLaren MP4-12c during a 15 lap race, I left Camber at the ridiculously high default value: 3.9. On the last lap I’d skip to the pits to check tire temperatures, and big surprise, not only are the temps far too low for that kind of camber, but the heat is almost equal across the tire. It seems crazy and completely wrong, so I can’t be first one to notice this.
It also appears I can just add the maximum camber value and receive maximum grip with zero downside. It makes the whole setup side of things seem like a complete waste of time. On a smaller note, the default brake balance is crazy as well, something like 68.
It obviously should not be equal like this after a race, or any realistic scenario. While driving I can see extreme events effecting the heat of the tire, as I dumped a burn out exited to pit straight away and the tire temperature went over 100, but after a full race the temperature is very low. Also the blister/grain meter is reporting 0% after the race as well, although to be honest I’m not exactly sure what it’s covering.
My method of building car setups is exactly how drivers and engineers do it in real life. They go out for a few laps laps, take a reading of the tire temperatures, adjust the camber, and repeat. I thought this was fairly common knowledge, tire heat tells you if the setup is balanced, and is extremely important. I use this method across all other sims, and you still cant explain the extremely weird anomaly that the tires temperatures are somehow are equal across both tires. Something is not working how it should.
To get equal temperatures across the tire like what occurred in the screenshots above, in real life you’d run zero camber and drive straight without turning your vehicle whatsoever. In that case you may get close to equal temperatures across the tires, however depending on tire inflation its unlikely this hypothetical scenario would produce the results above in AC after a fifteen lap stint.
To take things a step further, I ran an identical length stint with absolutely no camber whatsoever. My left front tire should have been destroyed, yet instead the inner/middle/outer temperatures are almost the same as the default camber values (within a few degrees). This makes no sense. Please tell me I have messed something up somewhere. I know they are talking about this on the official forums, but maybe the discussion hasn’t gotten to this point yet?
I know when Sev was in the RaceDepartment BMW 235i League earlier this year, I recall him saying something along the lines of maximum camber giving you maximum grip with no tangible degradation to the tires, but afterwards the three of lost interest in Assetto Corsa to the point where nobody touched the game enough to experiment with all of the different variables.
At the Nordschleife a few weeks ago in a RaceDepartment club, after an hour on Medium compound tires the car still felt like it had the same amount of grip it did when the tires first started to heat up, and by chance I took a look at the screen and saw there was no grain on all four corners of the car. I know I’m a good driver, but I would have thought that eight laps at the full Nordscheife endurance layout would wear out the rubber a bit. It didn’t. So you might be on to something, but just in case one of us is wrong, I’ll throw things up here and let our readers figure it out.