2025 Las Vegas Grand Prix - Las Vegas Strip, Nov 21 - 23

[fourmula1]

Min pressures 28F and 26R , for 2024 this was 27F and 24.5R. This is not too far below typical road/street car tyre pressures.

I guess the idea is to blow them upto make them feel like concrete to the drivers, indirectly prompting suspensions to be even stiffer than last year

Why would more tire pressure prompt teams to setup stiffer suspension?

[Luscion]

Wing levels for Vegas

[AR3-GP]

Wing levels for Vegas

https://pbs.twimg.com/media/G6KLZewacAE ... name=large

Looks like Monza specs?

[Luscion]

Wing levels for Vegas

https://pbs.twimg.com/media/G6KLZewacAE ... name=large

Looks like Monza specs?

yup

[basti313]

Are there beam wings?

[SiLo]

Wing levels for Vegas

https://pbs.twimg.com/media/G6KLZewacAE ... name=large

The shape of the rear wing endplates is interesting. Didn't realise there was so much variance.

[venkyhere]

Wing levels for Vegas

https://pbs.twimg.com/media/G6KLZewacAE ... name=large

The shape of the rear wing endplates is interesting. Didn't realise there was so much variance.

the endplates govern the edge vortex, but what I find more interesting is the amount of 'spoon' present in the mainplane : Mclaren and Ferrari are virtually 'no-wing' when DRS opens, while Merc and RBR have a small amount of downforce still produced. It will be interesting to see whether the Ferrari and Mclaren turn up for Q with the same wings ; since T3-T4 and T6 actually require some meaningful (even if small) downforce to be produced. Ferrari went with this no-wing choice in Monza, and suffered miserably through Lesmos, Ascari and Parabolica. Contary to this, the way Redbull produced their no-wing wing in Monza was by eating away at the flap, but keeping the mainplane spoon intact. I don't know anything beyond basic aerodynamics to decide which is the more efficient approach, but can attest that the Ferrari approach didn't yield the result they wanted in Monza. I guess they did the same in 2024 LasVegas as well, where they were rocket on the straight but suffered severely with tyre graining.
And guess what, the grip from the tarmac grain is much poorer in Vegas than Monza (which is a standalone racetrack).

[search]

same as last year, all roads will be open again to public between the days. So should be another no-grip weekend, apart from Quali maybe.

https://www.ktnv.com/news/vegas-grand-p ... grand-prix

[Farnborough]

Woohoooo, see the starting tyre pressures ?

28.0psi front
26.0psi rear

https://press.pirelli.com/roulette-in-las-vegas/

[vorticism]

What do they run during winter testing?

[venkyhere]

Min pressures 28F and 26R , for 2024 this was 27F and 24.5R. This is not too far below typical road/street car tyre pressures.

I guess the idea is to blow them upto make them feel like concrete to the drivers, indirectly prompting suspensions to be even stiffer than last year

Why would more tire pressure prompt teams to setup stiffer suspension?

Remember the tyre is also effectively part of the suspension itself - a pseudo-spring connected in series to the main 'spring' , so two things are caused by super-inflated 'hardened' sidewalls :
1)
Higher tyre pressure => smaller sized contact patch => less allowance for 'shifting weight load' to be taken off the inside(rear) tyre in corner(braking zone) => roll(pitch) stiffness has to be higher to compensate.
2)
Base ride height has to be set 'lower' because more inflated tyres lend more ride height => for the floor downforce to work, static ride height has to be set lower => when ride height changes dynamically from aero load, it can't be allowed to 'sink too low' to protect plank wear limits => less suspension travel necessary => stiffer suspension.

[Farnborough]

There maybe less "bouncing" for some too, enabling a more extreme setup potential by running lower with reduced risk of plank wear infringement.

Lando noted in preview that he suffered from front graining here, which is broadly not getting the carcass up to temp while taking the tread gauge over temp, that to then shed chunks and restick them to tyre surface. Raised pressure shouldn't help with that.

Unless anything fundamentally changed at McL, then doubt this is going to be better this year.

[search]

Unless anything fundamentally changed at McL, then doubt this is going to be better this year.

Tires are different now. It may still happen in conditions this extreme, but I don't think we've seen graining all year.

[Farnborough]

And Baku ?

[venkyhere]

There maybe less "bouncing" for some too, enabling a more extreme setup potential by running lower with reduced risk of plank wear infringement.

Lando noted in preview that he suffered from front graining here, which is broadly not getting the carcass up to temp while taking the tread gauge over temp, that to then shed chunks and restick them to tyre surface. Raised pressure shouldn't help with that.

Unless anything fundamentally changed at McL, then doubt this is going to be better this year.

Bingo.
There aren't many 'real corners' to cause any lateral loading here, and unless the tyres are 'dragster-tyre' level soft, all the straightline traction and braking aren't going to do much - nothing builds carcass temps like lateral loading, as we have seen in those slo-mo camera shots, where they look like they are coming off the rim. Pirelli themselves are declaring that their compounds are 'stronger' (which can be interpreted to mean stiffer sidewall) generically, this year, w.r.t last years ; plus, to add insult to injury, have raised the min tyre pressures even more. I can't see my way around how, with those rear wings, any car is going to be happy on the H (even if it's C3 and not the C1). Perhaps Pirelli dont want people to use the H.