iRacing 2023 November Improvement Replace

iRacing - Mazda MX 5 in the rain

iRacing’s Government Producer Greg Hill, posted the iRacing 2023 November Improvement Replace, taking us behind the scenes to take a look at what’s presently within the making for the iRacing on-line racing service.


Good day iRacers,

With only a handful of weeks left to go in Season 4, we’re shortly approaching the conclusion of the 2023 competitors yr, and what a yr it’s been! In fact, yearly at iRacing is exclusive; it’s the character of our enterprise that the sim and racing service are continually evolving. Nonetheless, I can’t consider a interval that’s been extra eventful and impactful for the way forward for sim racing at iRacing than these previous 12 months – now we have established key new partnerships that can assist our model of motorsport develop at a worldwide scale and attain all new audiences and racing followers; now we have strengthened present partnerships and secured a crucial license that can enable us to return to our roots with NASCAR and NASCAR Workforce Properties; and naturally, all through all of this, now we have invested considerably into the continued improvement and enchancment of our nice racing simulation and racing service.

Now, I do intend to share among the cool issues to return within the December S1, 2024 construct (and past!), however first, let’s take a second to concentrate on one of many bigger-picture developments I alluded to a second in the past.

As I touched on intimately in a earlier replace (give it a learn should you haven’t already), a big focus this yr (and final) has been the strategic growth of our workers throughout many proficient groups. This progress will allow iRacing to function from a place of energy for years to return and be certain that we proceed to ship an unparalleled fashionable simulation expertise. An enormous a part of this modernization will contain our graphics and rendering know-how, which, in fact, is central to a sensible and lifelike expertise. On that be aware, we’re thrilled to improve our graphics crew later this yr via the addition of a number of industry-leading principal-level rendering programmers who (along with our present crew) will assist evolve iRacing’s graphics tech in a means by no means earlier than seen on this platform. These builders have spent the final 20 years constructing and main graphics/rendering groups throughout a broad spectrum of highly effective graphics engines equivalent to id Tech, Unity, Unreal, Decima, and Glacier. Our reconstituted graphics crew can be extra formidable than ever and we couldn’t be extra enthusiastic about what’s to return. It is very important be aware {that a} graphics engine improve is a significant long-term mission and outcomes will take time. That stated, will probably be properly value it. Within the quick time period, we are going to proceed bettering the present rendering know-how.


And now for an additional big-picture replace that I do know many have been following carefully: the standing of our superior new climate system, known as Tempest internally.  Whereas we aren’t fairly prepared to ensure it for December, we are actually assured sufficient to say that the discharge of this extremely advanced system is imminent. Which means it’s going to rain quickly, people.

Tempest was constructed from the bottom up and consists of a number of interconnected programs that simulate not solely rain and the impact that water has on the racetrack, racecars, and surrounding space but in addition the bodily parts that mix to create numerous sorts of climate. This method is fueled by in depth real-world information from the very areas the place you’ll be racing. Along with our Dynamic Observe programs, the mixed expertise is unparalleled in simulation/gaming.

It’s arduous to explain till you possibly can expertise it for your self, however for these of you who race at these tracks in the actual world and have had the fortune (or misfortune) to take action within the moist, reliving that in iRacing with physically-accurate and true-to-life puddling is like nothing else on the market. You’ll really feel that tug of resistance while you drive via these moist areas. When issues get actually dicey, you’ll expertise aquaplaning. Wait till you see our aero-heavy racecars “vacuum” up water from the observe and redistribute it into the air and elsewhere on the observe, drying the racing line quickly within the course of. Recalibrate your expectation on what a race has in retailer for you as you seek for the road based mostly on the multitude of dynamics at play and the always-changing nature of the observe and climate programs, or should you see a darkish cloud looming on the horizon, is it on its option to you? Have your teammate verify the climate radar or question your crew chief for an replace…

The Tempest mission has been an extended journey for us, spanning a number of years. The concept took kind in discussions and brainstorming again in January of 2020, adopted by the preliminary technical design a yr later. For a lot of that point, the mission was helmed by a small R&D crew centered on the climate programs and the info mannequin. Right this moment, now we have the mixed effort of dozens of builders throughout internet engineering, graphics engineering, physics and tire engineering, sound engineering, backend engineering, database administration, observe artwork, automobile artwork, VFX, manufacturing, automobile improvement, QA, and design. Speak about a crew effort.

To verify expectations are set correctly, we do need everybody to know that this method requires per-car improvement. It’s not so simple as including a generic rain tire onto our automobiles; reasonably, we’re doing car-by-car R&D to make sure correct rain tire development/modeling and driving traits. Consequently, rain help can be added to the sim in batches, beginning with a compelling preliminary providing that’s seemingly to incorporate the Method 1600, Toyota GR86, and Ferrari 296 GT3.

We’re fairly happy with what now we have constructed, and we’re much more excited to launch it to iRacers. All of us look ahead to making it rain #quickly.

Season 1, 2024 improvement is rounding into kind, and the majority of our enhancements and additions have entered the ultimate QA course of. Let’s contact on just a few of the highlights…

Sim Optimization and Efficiency:

Our efforts to optimize and modernize our core engine proceed (and can proceed for a while), and now we have a devoted crew assigned to those efforts day by day. Current releases from this crew included important loading time enhancements and an elevated restrict for distinctive automobile fashions. This season, the crew has made performance-focused enhancements to our shadow culling system, frustum culling, and mirror rendering. These efforts and enhancements are impactful, measurable, and actually add up.

Improved Protest System:

Making a protected and clear atmosphere for racing has been a precedence at iRacing from day one and an space of the product expertise now we have invested appreciable assets into. Not solely have we developed many guidelines and programs to assist incentivize good racecraft, respectful racers, and an atmosphere centered on truthful play, however now we have constructed a division whose job is to educate, appropriate, and take regulatory motion when issues go unsuitable. This crew does an exceptional job working via hundreds and hundreds of manually intensive stories, every of which requires analysis and cautious thought to make sure that if a response is required, it’s an applicable response. With the December construct, we are going to equip this crew with a extra expansive toolset to do their jobs. A complete listing can be offered in our subsequent sporting code replace, however for now, a preview of what’s to return (and in no explicit order):

  • Teaching
  • Publish-Outcomes Race Disqualification. A member or crew could also be disqualified from a Race or occasion after Outcomes have been posted. Their Championship Factors for the Race or occasion will turn into 0, and they’ll drop to a last-place end.
  • Restrictions to numerous components of and/or the iRacing simulation.
  • The power to take part in Race and Qualifying Periods for a selected Official iRacing Sequence.
  • The power to take part in Race and Qualifying Periods for ALL Official iRacing Sequence.
  • The power to take part in Hosted Periods.
  • The power to take part in any and ALL multiplayer Periods of any form.
  • The power to Spectate Periods.
  • The power to make use of in-simulation voice chat and/or textual content chat.

…and extra. Our hope, in fact, is that none of it’s a must to expertise these programs in motion, nevertheless it’s necessary to know that we’re dedicated to sustaining an atmosphere that’s centered on the spirit of truthful play and respect.


After a construct stuffed to the brim with new automobiles final season, our crew has been specializing in a few of our longer-term R&D initiatives this season, equivalent to rain, our aero-modeling program, Oval Refresh, and tire mannequin updates. That stated, we’re excited to be debuting one new automobile in December: the Audi R8 LMS Evo II GT3. The Evo II is a part of our initiative to maintain our GT3 fleet fashionable and looking out nice. Comparable efforts will proceed within the new yr with a number of additions/replacements to our GT3 choices.

And the way will the discharge of the Audi R8 LMS Evo II GT3 have an effect on house owners of the older Audi R8 LMS GT3? We are going to concern credit based mostly on the next standards:

  • 100% of buy value for individuals who bought throughout the previous 30 days
  • 50% of buy value for individuals who bought throughout the previous 31 to 180 days


We’ve a various set of observe content material slated for launch on this construct. No surprises right here, as this has all been introduced…

On the oval aspect, we’re excited to launch Slinger Speedway. Slinger is a lot enjoyable to drive, and also you all could have a blast turning laps on the “World’s Quickest Quarter Mile Oval.” And sure, people, it should embody the determine eight configuration!

Mugello Circuit is trying wonderful and also will debut in December. Not solely does the observe look wonderful, nevertheless it’s a blast to drive and is a circuit now we have needed to expertise in iRacing for years now. We’re actually excited to have the ability to make that attainable lastly.

Okayama Circuit is one among our hottest circuits on the service. It’s a compelling drive throughout numerous automobiles, particularly these in our Rookie collection. Nonetheless, it has among the oldest art work on the service. Okayama can be re-released (without cost) with fashionable art work that meets our present requirements for high quality. It appears nice.

Outdoors of those highlights, there are much more fixes, enhancements, and additions coming in Season 1, 2024, and we are going to present a complete listing with the discharge notes as we method the construct.

There’s much more happening at iRacing, and I actually may go on right here for a very long time, however let’s save a few of these updates for a later date. That stated, a handful of things earlier than we conclude…

Our scanning division has been busy. Processed information was delivered to the crew lately for each Portimao and Navarra, and our manufacturing and artwork groups are already underway.

The scan crew has additionally simply returned from a giant journey to the center of oval racing nation (North Carolina), the place they scanned the SRX automobiles (pavement and filth) and a handful of various Road Inventory automobile our bodies.

We’re engaged on a Micro Dash, which is able to present an ideal entry level to filth oval racing (do you all need a pavement model too?). This automobile will lend itself properly to Millbridge Speedway (in progress), the already-released Kern, and a handful of further present and future quick tracks on iRacing.

Our Profession Mode crew is making important headway on this mission, and we’re actually selecting up steam throughout all supporting departments, together with design, sim engineering, internet engineering, and backend programs.

Our Person Expertise and Design groups are engaged on a brand new construction for the UI, which is able to transfer us away from the modal-based expertise accessible now to a extra approachable and accessible design for the long run.

Oval Refresh:

Oval refresh has a full complement of builders engaged on it every day, and they’re making important progress. These efforts will proceed for a while as we iterate the various programs concerned. That stated, we don’t wish to wait till we’re “carried out” to launch these enhancements to the service. With the December construct asphalt ovals have been up to date to supply an improved dynamic racing expertise. Observe floor grip ranges will change extra quickly as temperature rises and fall relying on climate, time of day, and the power the automobiles are placing into the observe. Be ready to tune setups for altering observe circumstances and seek for grip as numerous lanes warmth up and funky down all through a race session.

That’s it for now. Thanks all in your continued help, and see you on the market on the observe.

As at all times, benefit from the screenshots.



Government Producer iRacing

Official Webpage –

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