I obseve similar in this, with max driving. One of his most extensive attribute being just how "liquid" his approach is to that entry and turning phase of chassis, to virtually peerless effect. This track and tyre situation takes the potential out of that feel and sphere of operation by ultimately a truncation of just how the tyre starts to release at the extreme of load. Its much more staccato and fractured in reality here.venkyhere wrote: ↑30 Nov 2025, 09:07Actually if you compare the fastest Q3 laps, Max is only a few thousanths behind Piastri until T7, post which is where he lost all of the quarter of a second, a large chunk of it in S3.AR3-GP wrote: ↑29 Nov 2025, 23:54They are quicker on the straights after the setup changes. He was consistently 4-5kph quicker compared to yesterday.
https://i.postimg.cc/hPM11rpy/image.png
My guess is that it's the super-inflated tyres (min pres 29F, 26/27R) , at high aero load (super low riding and at high speed as well), once they are upto 'peak temperature' after T6, causing a 'red shift' or 'blue shift' in tyre harmonics w.r.t typical numbers when pressures are normal, whereby the new frequencies now find some sort of resonance with the damping frequencies of the suspension, leading to unexpected vibrations, and cause the bouncing/porpoising, making the car lose critical grip in phases of corner entry/exit.
Remember, one of Max's comments was 'I feel the engine is jumping from it's mounts and moving on it's own, out of phase with the car'. That is a big clue (it's wonderful that the team has a driver who is ultra-sensitive and feels everything happening in the car). I am almost convinced that this is exactly what happened with the Mclarens in Vegas (dangerously low static ride height, high speeds, and high tyre pressures) , just that because the track was bumpy, it led to premature skid wear.
The first image that came to mind is the axle tramp (typically in reverse or in a forward climb) that was a feature of old solid axle 4WD vehiclesFarnborough wrote: ↑30 Nov 2025, 11:22I obseve similar in this, with max driving. One of his most extensive attribute being just how "liquid" his approach is to that entry and turning phase of chassis, to virtually peerless effect. This track and tyre situation takes the potential out of that feel and sphere of operation by ultimately a truncation of just how the tyre starts to release at the extreme of load. Its much more staccato and fractured in reality here.venkyhere wrote: ↑30 Nov 2025, 09:07Actually if you compare the fastest Q3 laps, Max is only a few thousanths behind Piastri until T7, post which is where he lost all of the quarter of a second, a large chunk of it in S3.AR3-GP wrote: ↑29 Nov 2025, 23:54They are quicker on the straights after the setup changes. He was consistently 4-5kph quicker compared to yesterday.
https://i.postimg.cc/hPM11rpy/image.png
My guess is that it's the super-inflated tyres (min pres 29F, 26/27R) , at high aero load (super low riding and at high speed as well), once they are upto 'peak temperature' after T6, causing a 'red shift' or 'blue shift' in tyre harmonics w.r.t typical numbers when pressures are normal, whereby the new frequencies now find some sort of resonance with the damping frequencies of the suspension, leading to unexpected vibrations, and cause the bouncing/porpoising, making the car lose critical grip in phases of corner entry/exit.
Remember, one of Max's comments was 'I feel the engine is jumping from it's mounts and moving on it's own, out of phase with the car'. That is a big clue (it's wonderful that the team has a driver who is ultra-sensitive and feels everything happening in the car). I am almost convinced that this is exactly what happened with the Mclarens in Vegas (dangerously low static ride height, high speeds, and high tyre pressures) , just that because the track was bumpy, it led to premature skid wear.
Its something that's huge in Moto-GP which they describe as "chatter" which plays havoc with some setup/track/tyre combination for them. They also use, just for some tracks, a different rear tyre construction to counter uncontrolled durability aspect in limited tracks.
Effectively, this is the staccato release grip release "frequency" or cadence of the tyre carcass by load/unload cycle, rather than push itself into a phase of pure slide. Ultimately cancelled by straightening trajectory and taking load off the structure .... which of course can't be done through some of these long radius very high energy lateral zones.