iRacing: 2021 Season 4 build preview, AI, IndyCar, tyre model, & more!

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iRacing is a phenomenal racing sim on PC and offers unparalleled racing with an all-online format meaning you'll always have the chance to race real people.

Now, the team behind the game is gearing up towards the release of Season 4.

This release sees a number of changes arrive in the game, so let's take a look now at what players can expect!

AI expansion

Whilst the game does lend itself to true, online competition, there are ways to race against AI-controlled opponents.

As is iRacing's want, these AI are tailored perfectly to each circuit, meaning that they take a fair while to put in the game and then release.

With Season 4 comes AI racing in the Ford and Holden supercars at Bathurst, Oran Park Raceway, Phillip Island Circuit, and some others which aren't named. We also get more oval racing in the form of the Super Late Model and a variety of tracks.

Finally, the team has done some more testing and rebalancing. This will hopefully make the AI in iRacing more and more competitive!

Dallara IR-18

The recently added Dallara is also getting a slight rework. This comes in the form of a tyre model update.

The soft and hard compounds should now better reflect the real-life versions, and the rear-tyres should now be able to last a bit longer.

Finally, you will receive competitive setups for the IR-18 throughout the course of Season 4.

Class D Road

For those who are a fan of the D Class road cars, you're in luck. A number of changes will be made to the Ford Mustang FR500, the Kia Optima, and the Pontiac Solstice.

These changes include tyre parameter improvements and brake balance shifts, both of which should help the competitiveness of the cars.

GT3 changes

The GT3 class is where we will see the most changes, as we receive updates to tyres, Balance of Performance and even driver assists.

There are also chassis updates to the Ford GT, McLaren 12C, Mercedes-AMG GT, and Porsche 911 R GT3.

There are enough changes to warrant a look at your current setups, as chances are they'll need updating also.

Lotus 49/79

With classic formula cars, the goal is achieving that realistic, classic feel. This update aims to do just that.

Modern suspension solutions such as the anti-roll bar have been removed from the 49, as well as setup changes such as the camber being more period-appropriate.

The 79 sees tyre improvements as well to improve the feel of the car at grip limits.

NASCAR Shock Updates

Finally, there will be changes across the board in the NASCAR class. This includes next-gen dampers for Class B and Class C cars.

Once again, we also have a road course tyre update to improve the feel of the cars.

Release Date

At the moment, we have a release date of September, however, we don't know exactly when.

As soon as we know, we'll be sure to update this piece, so stay tuned!

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