I have a few concerns with the GT1s, all rather minor stuff and not really bugs, more observations or inaccuracies so I thought it is best to just clump it all together and get it out so maybe some of it can be adjusted in the next patch. If you are not interested in those tiny details, better stop reading here. I also want to emphasize that this is not some sort of rant, I am very happy with the GT1 cars overall and they are very fun, unique and well made. Most of these are observations from my own research and having watched races, interviews and reports a few times (lockdown was pretty boring) and I will put some sources at the end on why I came to some of the conclusions but if there is anything specific is asked, I will try to find and add it. Firstly regarding the fuel consumption: From my testing the Porsche has by far the best fuel consumption, the Nissan and McLaren are somewhat on par and the Merc is the worst. I tested on a few tracks and at Le Mans specficially, because it is the only where there is a real reference from real life and I got almost exactly 12 laps for the Merc, about 12.7 for the McLaren, 13 for the Nissan and 13.8 for the Porsche. How the fuel consumption was exactly in reality is hard to tell because at Le Mans the Nissan, Porsche and McLaren did 13 laps in race pace with the Porsche probably saving the least, but they were likely all in a similar range. The only thing for certain is that the Merc was clearly the most fuel efficient, even in it's short time in the race being the only car doing 14 laps at a very high pace early on, which could not be matched by anyone even at night. Then there is the performance of the cars. They seem pretty well balanced overall at the moment and I like that they are boped to be able to race each other while still feeling very unique. But the Nissan seems way too fast in a straight line and way too weak on downforce in my opinion, in reality it was about on par with Merc but in AMS2 the Nissan can go over 335kmh at Le Mans pretty easily while the Merc can hit about 325kmh while the much less advanced McLaren easily outperforms it on downforce, so I think both for accuracy and better racing some adjustments there are warranted. Also the Porsche seems to be almost as fast as the Merc and about on par with McLaren in a straight line which is also a bit too quick for a car with only 550bhp. I understand all of this is also setup related but I put some work in it to get the most out of them and while there might be bit more possible, I don't think it is going to change the overall picture. So to sum this up, from my perception the Porsche should be a bit slower in a straight line, the McLaren a bit weaker on downforce, the Merc seems about right and the Nissan slower in a straight line and better on downforce. My third point is the general behavior of the cars. All of this is very subjective however and might be in part setup related so maybe other players can share their opinion, but I personally didn't find anything to work out setupwise: The Porsche was reported by drivers at the time to be extremely gentle and easy to drive, especially close to the limit which was also possibly a reason to add just ABS and no traction control for Le Mans where it was allowed to do so. In AMS2 I feel like it is very "punchy" on corner exit, which seems odd regarding it's lower power compared to the other 3 cars and what I mentioned before. The Merc just feels very odd to me ever since the 3rd spring was added, it felt really good before that but since then it does seem to be very understeery at lower speeds and overall somewhat similar in pace to the McLaren. I have to say I have no clue how to use that 3rd spring though, so that might be part of that problem. It also seems to be very susceptile to blowing the engine, which seems correct at first glance regarding Le Mans but they were absolutely bulletproof after that in the FIA GT series with only 1 DNF in 8 races among 2 cars because of a broken wheelnut. Another very minor detail with the on-board shifting lights on the Nissan and the McLaren: For the Nissan it has an overrev light that goes up at the same time as the shifting light, they should be seperated like they are on the Porsche. With the McLaren it seems to be very far away from the HUD shifting light, this one might be accurate however, it just feels to come up extremely early when driving. Also related to that: The Merc used a different wheel and shifting lights than it does in-game. The ones in game are used nowadays on the car for showruns. I know what it used back then went white-green-red because the former driver Klaus Ludwig mentioned it (possibly similar to the what the Toyota GT-One had on the display as they seem to use the same system) and that it was not on the wheel, I have not seen the actual shifting lights on on-boards though. And my last point is the AI on the Nissan, it is so much slower than all the other cars on most tracks (except for the obvious Hockenheim historic, Le Mans, etc. because of its top speed) that it is impossible with AI files to have a Nissan in the top 6 without going very low on all other cars race/qualifying skill while then being impossible to overtake for the AI because it is so fast and regulary holding up the whole field. Sources: Mercedes wheel (video) on-board (video) Speedtraps Porsche behaviour Fuel consumption (video, German) Fuel consumption 2 (video, German)
