Interlagos is a circuit that Formula 1 fans have really missed over the past few years. F1's only race in South America is a true old-school track and one of the fans' favourites to watch.
There have been many notable wet races in Sao Paulo since the modern Interlagos opened in 1990. These include the thrilling championship deciders in 2008 and 2012, as well as stunning races like 1993, 2003, and 2016.
You have to be prepared with your setup in F1 2021 for all weather conditions. So, when it rains, you'll have to adapt your dry weather setup for the wet. Here's the best setup we found for the Brazilian GP!
Aerodynamics
Interlagos' twisty middle sector means that you need high downforce, especially in wet conditions. This will cost you a little performance on the straights, but you'll gain a lot back through the corners. 9 on both the front and rear wings is what we found to be best in Brazil.
Transmission
In general, in the wet, a more unlocked differential is best for your transmission settings. 70% for on-throttle transmission allows for a smooth power delivery when getting back on the throttle. 50% off-throttle also keeps the car stable when lifting off around the long corners in the middle sector.
Suspension Geometry
The camber and toe values need to be orientated towards pace rather than tyre life in Interlagos. The contact patch is best being as large as possible because the wet weather tyres are extremely durable in Brazil. The toe values need to be as low as the regulations allow, 0.05 on the front and 0.20 on the rear.
As for the camber, you need to be more towards the default values but still on the liberal side. On the front, you need to be all the way to the right at -2.50. At the rear, a value of -1.50 is ideal to not let the rears overhead too much.
Suspension
The suspension has to be soft to allow for a comfortable and predictable ride in Brazil. While a responsive suspension would help in corners like the Senna S, it does increase the risk of spinning out. The suspension's springs in particular need to be very soft, as water often collects on the kerbs, which are harsh to begin with anyway. We've found 1-4 is best.
It's the same story for the anti-roll bar, you need this to be on the soft side as well. 1-4 gives you good responsiveness, but also allows you to lean on the limits of the car more. The ride height of your car needs to be high, as the climbs up in the middle and last sectors require this and it'll also help over the kerbs, 4-7 is ideal.
Brakes
There are no big stops in Brazil, even the braking zones into Turns 1 and 4 aren't that long. So, 100% brake pressure is achievable, even in wet conditions. The brake bias should be around 57% towards the front in order to avoid front lockups.
Tyres
Just like Japan, the pressures in your tyres can be all the way up at the top to help keep temperatures within your tyres high. If you are struggling with overheating through the middle sector, though, feel free to lower these values.
In general, though, we've found that 25.0 psi on the fronts and 23.5 psi on the rears is best for good, consistent lap times.