18-inch wheels to be introduced in 2021.

Here are our CFD links and discussions about aerodynamics, suspension, driver safety and tyres. Please stick to F1 on this forum.
DiogoBrand
89
User avatar
Joined: Thu May 14, 2015 6:02 pm
Location: Brazil

Re: 18-inch wheels to be introduced in 2021.

Post by DiogoBrand » Mon Oct 29, 2018 12:24 am

FrukostScones wrote:
Fri Jul 27, 2018 2:51 pm
Michelin not amused:

https://www.autosport.com/f1/news/13765 ... -tyre-plan
There's a reason for Michelin not being amused: The FIA has no interest in ditching Pirelli, who is willing to put their reputation on the line to follow F1's stupid demands.

JordanMugen
5
Joined: Wed Oct 17, 2018 12:36 pm

Re: 18-inch wheels to be introduced in 2021.

Post by JordanMugen » Mon Oct 29, 2018 5:57 am

If I recall correctly Pirelli say they will introduce the overall tyre diameter to 710mm for 18" wheels --- even though many other categories use 18" tyres with 650 or 680mm overall diameter that is more similar to the 660mm overall diameter of 13" F1 tyres.

I take it, this is to align with LMP1 tyre sizes which have a 710mm diameter also?

MtthsMlw
489
User avatar
Joined: Wed Jul 12, 2017 5:38 pm
Location: Germany

Re: 18-inch wheels to be introduced in 2021.

Post by MtthsMlw » Sun Nov 25, 2018 1:05 pm


humble sabot
22
User avatar
Joined: Sat Feb 17, 2007 9:33 am

Re: 18-inch wheels to be introduced in 2021.

Post by humble sabot » Sun Feb 10, 2019 7:17 pm

As 2019 starts I'm thinking more about this. The total amount of deflection on current F1 setups is not insignificant but as has been stated, it's primarily sidewall flex. How much change are we really going to see? LMP1 suspension seems to offer a similar amount of mechanical movement to current F1 but offers less sidewall deflection.
Will we see extra development in wheel designs since the metal part is going to make up a larger part of the unsprung and rotating weight?
the four immutable forces:
static balance
dynamic balance
static imbalance
dynamic imbalance

smellybeard
1
Joined: Tue Dec 02, 2008 2:34 pm

Re: 18-inch wheels to be introduced in 2021.

Post by smellybeard » Fri Mar 15, 2019 10:09 pm

Stupid.

DiogoBrand
89
User avatar
Joined: Thu May 14, 2015 6:02 pm
Location: Brazil

Re: 18-inch wheels to be introduced in 2021.

Post by DiogoBrand » Sat Mar 16, 2019 12:29 am

humble sabot wrote:
Sun Feb 10, 2019 7:17 pm
As 2019 starts I'm thinking more about this. The total amount of deflection on current F1 setups is not insignificant but as has been stated, it's primarily sidewall flex. How much change are we really going to see? LMP1 suspension seems to offer a similar amount of mechanical movement to current F1 but offers less sidewall deflection.
Will we see extra development in wheel designs since the metal part is going to make up a larger part of the unsprung and rotating weight?
I'm guessing they'll probably adopt LMP1-like wheels, with a flat part on the outside.
Image
You need some open space on the wheels to cool the brakes, once you leave that space, anything more will just create more drag and turbulence.

What I'm most interested about is the actual suspension development. As far as I know, right know most of the suspension travel comes from the sidewalls flexing, so when you eliminate a big part of that, the suspension is probably gonna need more travel and some changed concepts to provide the best mechanical grip.

browney
2
Joined: Sun Apr 15, 2012 9:13 am

Re: 18-inch wheels to be introduced in 2021.

Post by browney » Mon Mar 18, 2019 9:39 am

That's a good thing.

It will make some handling characteristics under control of the teams by working with the suspension engineers and away from the tyre, which is a pre-defined component.

jjn9128
172
User avatar
Joined: Tue May 02, 2017 10:53 pm

Re: 18-inch wheels to be introduced in 2021.

Post by jjn9128 » Mon Mar 18, 2019 10:12 am

browney wrote:
Mon Mar 18, 2019 9:39 am
That's a good thing.

It will make some handling characteristics under control of the teams by working with the suspension engineers and away from the tyre, which is a pre-defined component.
Unless the suspension is one of the parts the FIA standardise...
#aerogandalf

JordanMugen
5
Joined: Wed Oct 17, 2018 12:36 pm

Re: 18-inch wheels to be introduced in 2021.

Post by JordanMugen » Thu Apr 11, 2019 10:09 am

Thunder wrote:
Fri Jul 20, 2018 9:19 am
So, F1 finally made it into the 21st Century. Congrats i guess. :wink:
I think it will look great, and will make the 13" historical version look strange.

Edit -- Hmm did the sidewall height increase from the Lotus version to the GP2 version? The Lotus version seems to look better -- was it 680mm diameter which was increased to 710mm diameter (LMP1 size) on the GP2 demonstration? :?: In that case, the 680mm version looks much better.

Image

Image

Image

jjn9128
172
User avatar
Joined: Tue May 02, 2017 10:53 pm

Re: 18-inch wheels to be introduced in 2021.

Post by jjn9128 » Thu Apr 11, 2019 2:33 pm

JordanMugen wrote:
Thu Apr 11, 2019 10:09 am
I think it will look great, and will make the 13" historical version look strange.

Edit -- Hmm did the sidewall height increase from the Lotus version to the GP2 version? The Lotus version seems to look better -- was it 680mm diameter which was increased to 710mm diameter (LMP1 size) on the GP2 demonstration? :?: In that case, the 680mm version looks much better.
The tyre tender specified a diameter between 700mm and 720mm. I think Pirelli said they'll use 720mm, but I can't find the source. Could do 700mm on the fronts and 720mm on the rears to give a bit better forwards visibility.
#aerogandalf