They are currently on race cars Formula 1 used 13-inch rims and tires, for the season 2021 however, a policy is being prepared that will raise the rim diameter by 5 inches. Why and what will such a change have an impact on?
In fact, they are FIA in Liberty Medium look at one thing when implementing the new policy - rim dimension racing cars approach the dimension of road car rims. But this "unification" also has side effects.
facts:
- the front tire will be 35mm narrower (270mm)
- the width of the rear tire remains the same, but its diameter increases to 700-720mm
What does that mean? First, the front tires will be due larger areas in contact with the track is easier to warm up, which is not a negligible fact, given that the proposed amendments to the 2021 also a ban on use tire heaters. The rear tire will have a larger one due to the larger diameter moment of inertia, which means it will be harder to rotate, but at the same time it will be heavier than the current one and will increase the impact unsprung mass.
And straight suspension is that part of the race car that will be with the introduction 18-inch wheels experienced the greatest changes. Currently, only the suspension is set very firm and in the narrow stiffness range, as they have 13-inch tires while driving quite a bit major deformations due to the high side. Remember what a slow motion shot of a car driving through e.g. Parabolic v Monza, where it looks like the tire will just come off the rim. 18-inch the tires will be stiffer with the lower side, compensation it will therefore be done via the suspension, which will allow a much larger range of settings. At the same time, the new suspension will need a larger stroke to compensate for the smaller one deformation tires.
It will have a much bigger impact as well pressure in tires. First because of the ban heaters and the tires will be fitted with the ambient temperature (currently due to the heaters with 110°C), and then because of the smaller volume tires. “The mere fact that we no longer use tire heaters changes a lot of things, because e.g. many components in the rubber compound change, because the so-called glass transition, where the rubber offers greater grip, must be lowered to a lower temperature,” he says Mario isola, Pirelli head of the racing department. With a new one mixture of the mixture however, they will have to deal with another challenge, which occurred this season. Technical team at FIA expects a tire to have a lower tread degradation and will allow the racer a longer period of driving at the border. This year's mixture is different and allows max 4-5 rounds driving completely on the border.
They will also receive changes brakes, as they may be larger due to the larger rim. If you are wondering why FIA choice straight 18-inch rim, the answer may be that many racing series have flat rims of these dimensions prescribed, FIA however, he wants knowledge to flow between series in such a way the benefit of sport as well as for the benefit lower costs.
The idea of Fr. 18-inch tires is in Formulas 1 present for several years, in recent years it has been intensively developed with the intention of making racing even more interesting. Teams are currently studying the data and numerical models for the simulations he provided them Pirelli, while Italians they expect teams in return as soon as possible working version of the car, because you are mainly due to suspension in brake they can’t help much with the current one and they can’t test tire prototypes like that. Bodo pa 18-inch tires in season 2020 debuted in the championship Formula 2 and thus offered something answers to current issues.
