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Project Motor Racing
23.02.26 11:59 Community Announcements
[p]With update 1.6.0.1 for Project Motor Racing the GT3 class now has a new tyre model that works differently from before. One of its fundamental changes is tyre temperatures.[/p][p]If you’ve been watching the tyre temperature indicator on your HUD while driving a GT3 car, and wondering why it seems to fluctuate more than before, here’s a rundown on what’s going on under the hood — and what you’re actually seeing in the cockpit.[/p][p] [/p][p][img src="https://clan.akamai.steamstatic.com/images/45601812/6d09233288560ce1ada9816bf3a89e8640b69df6.jpg"][/img] [/p][p]On the Heads-Up Display (HUD) you will find a range of information. On the bottom right corner (by default) you will find the tyre temperature readout which displays different temperature values.[/p][p]These temperature values are what we’ll be focusing on in this blog post to give you a better understanding of how close-to-surface temperature, and core tyre temperature work and what’s the difference between the two.[/p][p] [/p]

Surface Temperature: What the Colour Indicator Shows 

[p]With update 1.6.0.1 changes were made to where the temperature is sampled from inside the tyre for the visual indicator on your HUD.[/p][p]The colour graphic is now driven by a measurement point closer to the tyre surface. Because surface temperatures react very quickly to driving inputs, this means the colours can move around more than before. As you exit a corner and drive down a straight, for example, the tyre surface cools rapidly, which can cause the indicator to dip back toward blue — even though the tyre is still performing perfectly well.[/p][p]In other words, the tyre model itself is behaving correctly. It’s just that the visual indicator is now more sensitive, and is reflecting moment-to-moment fluctuations in your surface temperatures.[/p][p]We made this change to give a better representation of what the tyres are doing. [/p][p] [/p][p][img src="https://clan.akamai.steamstatic.com/images/45601812/4a86beab1e86d20cf1390e0ea303b8b8b5354489.jpg"][/img] [/p][p] [/p]

Core Temperature: What the Number Represents

[p]The number you see for tyre temperature and the colour of the tyre graphic are not measuring the same thing:[/p]
  • [p]The number reflects the tyre’s core temperature — more stable and slower to change.[/p][/*]
  • [p]The blue/green/red colour graphic reflects a temperature reading taken from a point closer to the surface contact patch, which changes much faster with braking, sliding, wheelspin, and cornering.[/p][/*]
[p][/p][p]This means you can sometimes see the tyre graphic dip blue on a straight as the surface cools quickly, even though the tyre is still within a good operating window overall.[/p][p][/p][p]Both readings are valid. They’re simply showing different layers of tyre behaviour—surface activity versus the deeper, more stable core temperature.[/p][p][/p][p]Surface temperature helps you understand where you’re pushing too hard. A front left temperature rising suddenly in a left turn suggests you’re perhaps scrubbing them too much. Core temperatures reflect where your tyre’s range currently is.[/p][p][/p][p]The ideal temperature range is 70°C – 95°C (158°F – 203°F) with the current tyre model for GT3 class.[/p][p][/p][p]Use these temperatures in combination to get the most from your tyres.[/p][p] [/p][p] [img src="https://clan.akamai.steamstatic.com/images/45601812/6a06ef0c7c1aba565a401eb8cbcdbf35fede337c.jpg"][/img][/p][p] [/p][p]Based on your feedback, we’ll be refining this further by adjusting how the temperature indicator behaves, along with widening the “green” optimal window so it better reflects real usable performance.[/p][p][/p][p]Clear, trustworthy feedback in the cockpit matters, and we’ll keep improving this as we refine the system.[/p][p] [/p]