@ gtdrift // This is exactly the video I had in my mind when I wrote my last post. The NSX-R NA1 is one of my favourite handling car. I adore the driving experience it has to offer before 1.39 and was hugely disappointed with the new "handling". So, after your post, I decided to give it a another go on Suzuka (Stock car setup, PS4 podium DD, no ABS).
And it felt the same: AWD driving style. And I don't know how you were able to mimic the driving of Senna is this car because it's impossible to trail brake and then apply power to sustain a light slide to prevent understeer on the throttle like he does during mid-speed corner. The tires grips way to much and you can't sustain the rear wheelspin. Even with CS tires, you barely brake rear traction exiting an hairpin. I know it's a MR car, but this is way too exaggerated.
So, I decided to do something I hate to balance cars: I put SH tires on front & CS at the rear. It solved 90% of the problem for me. The car is a joy to drive again, and even if the rear regain grip too easily, I can sustain a light slide to prevent understeer at corner exit and I can play with mass transfers to play with the car. But everything feel a bit too much under control.
I tried the same rear tire tweak with a lot of car, all MR or RR and the GR Supra. And they were all nice to drive again.
Even racing car with MR or RR layout feel more balanced with less grippy tires at the rear. But trail braking is a bit overdone this way.
I did some laps with a stock 458 Italia (-1 brake bias, SH Front and CS Rear) on Tsukuba. My best lap was only 0.7 second faster than the real life one. Did the same thing on the Nordschleife and after several tries, got a 0.4 second faster laptime than the real one. So this tweak works for me, and give me the feeling to drive on the edge again, with no form of forgiveness from the physics. If some wheels user could test the same thing and share their opinions, that would be cool !!
I don't know what PD touched in term of parameters. But here is what I observed after 4 hours of driving several different car with unequal front and rear tyres:
1) It feels like mass transfer are higher, both longitudinally and laterally. And they feel too much overdone and too much damped during transition. That would partially explain wheelies and weird behaviour with some cars while throwing them left to right, as I saw in some videos on this thread.
2) It feels like rear tyres have more longitudinal grip during acceleration than before. During deceleration, they feel the same as 1.38.
The lost and gain of the longitudinal and lateral grip are way smoother than before. A tad too much for what I have experience on track IRL, but those changes are in the right direction.
They should mix 1.38 and 1.39 for the lateral and longitudinal grip of the rear tyres to keep some twitchiness when you don't perfectly execute the throttle input sequence needed to exit a powerslide or a drift in a smooth fashion way (In real life, with a stock road car, exiting a powerslide, a slide or drift is not that hard, what is hard is to smoothly exiting it, and it's should be like that in a Sim biased game). It's too easy to catch slides and control drift ATM.
3) It feels like front tires haven't be reworked the same way as the rears.
4) FFB feels better when grippier tires are fitted at the front than the rear.
After reading other people opinions of the physics. I understand why PD want to make Sport Mode more competitive and clean. But instead of messing with the overall balanced (logical but not perfect) 1.38 physics. Why didn't just implement a good traction control? The super default ABS in GTSport (acting like a stability control while braking more than a real ABS) is mandatory if you want to be competitive in Sport Mode.
So a good traction control (allowing to be as fast as TC off now) shouldn't be a shocking thing I guess if they want pad users or less skilled driver to have nice and clean races.
But they shouldn't penalize the driving experience for users like me that love to drive plenty of different cars to get a taste of what it is to drive them in real life. Or those who want to learn to drive different cars layout, or learn driving techniques they can apply in their cars on a real circuit.
And if rear tires are wearing too fast. They just had to adjust the tire wear rate of the rear tires. Reworking the overall physics for that reason would be a stupid thing to do, and I don't think this is a cause, but more like a consequence of the new physics. So something is messy right now. It's like they did half of the work done before going on holidays. Hope they will fix that soon.
@ Walter_Start // I totally endorse your analyse.
Anyway, I'm glad that I can still enjoy real life physics without fearing it will be tweaked with a 1.39 style update...
PS: FFB felt much much better tonight. Don't know if they changes something or not...
I drove that car on Suzuka just now for kicks. Stock, sports hard. Imo, you can make the car do what the inputs result in. My only n class I am competitive in is n100 if they are the Alpine or the speedster or Miata. I don’t do much on n cars in general.
However, they recently ran Suzuka East n300 for a week and a week or two later Tsukuba. I’ve run both tracks a ton. I really hate driving ff and awd cars in general, but those are fun tracks for me. I put in time trying to learn the secret to the NSX, but it was just a drift car to me. Super well balanced, but way too drifty on throttle to be competitive in a race. Exiting the final turn on Tsukuba was a joke. The car immediately busted loose at the rears, the BANKED tight turns were not much better. It was fun but fun for drifting, not racing.
It was. Very very well balanced and controllable, but it wouldn’t get enough power to the ground consistently enough to race in my hands.
After a while both weeks I decided against racing the car. It was far too frustrating not only in slow corners but mid speed corners.
The tires would explode under throttle like it was on the bottle. Imo it was super fun to lap in a bit, but trying to race it against a gtr was not possible for me. You can watch Senna there in the hairpin he blips but he’s CARVING it before throttling out after releasing the steering input. When he blips the rears don’t light up. He’s not doing what I have seen so much that people were trying to do in both Alpine n100 and speedster n100 Brands Indy and Tsukuba and even the Miata race at streets of Willow which was drifting. Drifting isn’t my personal thing.
Anyhow, regarding the handling on the turns at Suzuka, full Suzuka, that car can be driven in any number of ways. The balance hasn’t changed, grip hasn’t changed, the pitch under accel and decelerations is what changed, and since there’s more weight in different locations people get a sense that they messed with tire stickiness. Imo they made one small adjustment and that resulted in more pressure being exerted downward on the tires at different times resulting in different grip from before. Awd and ff will suffer understeer for sure with this imo. Seems also that’s what was said above.
I don’t launch cars and make zero to sixty runs so no comment there. I also just use paddle shift, although it seems they made improvements on the clutch implementation also, so maybe I will add a shifter. Undecided since I mostly drive the race cars, but I think it would be fun on the few road cars I like to lap in once in a while like the 2000gt and Cobra. Or Alpine or speedster or now NSX.
So my comment is that your take on longitudinal mass transfer is imo on the money, and that is going to affect more than you might first think.
Personally, I wish they would have kept the high tire wear multipliers, I do better when a race isn’t an all out blitz, but a bit more sane and calculated in sport mode or FIA.
Anyways re the NSX, stand it on the nose a bit more on entry than you should such that the car is imbalanced and it’ll still fry the rears all day in tight corners, but come off brakes better and get it balanced and now it doesn’t behave like anytime you are turning someone remotely turned on a nitrous bottle.
I had some interesting moments also in mid speed corners inducing over or understeer. It’s not easy for me, I don’t have the time in on that car, but depending on the position on track you are in you can make it do all sorts of things depending on what you do to it’s balance.
So imo they didn’t mess with tires at all, they just messed with pitch, seems they didn’t touch roll to me.
Imo the pitch adjustment caused the difference being felt in grip. The resulting change in handling means I would feel confident racing that car. Before noway.
Cheers for your time put in the post. It’s a fun topic to try to reverse engineer what they did and fun to read others opinions. My take is everything everyone has experienced is explained by a change in pitch alone during accel and decelerations.