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Thread: Tyre wear or tyre indicator not working as intended.

  1. #1
    Superkart Pilot
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    Tyre wear or tyre indicator not working as intended.

    Just done a bit of preparation for an upcoming event in which weŽll be Racing in Willow Springs in road cars. People were wondering if track tyres (the Farreti ones) would go the distance so I did some driving on them to find out if I could use them or I should drive a harder compound.

    What I got is the following:

    - Stint lenght 25 laps
    - Tyre wear indicator (real wear speed) went completely down in lap 18/19 for the left tyres.
    - By the end of the stint right tyres had like 5% left.

    The car felt exactly the same for the first 18 laps. In fact I kept getting faster as fuel went lower. The tyres had the same grip at 90% and at 10%. Only when they hit 0% on the left side the car started to pick up understeer on the right handers, which was only costing me around 1 second. To make things worse, I did all the stint with orange or red tyre temperature on the left side of the car, with 0 grip lost.

    I had the same experience in a Spa race with road cars in the 3.0 days, the car (Zonda Roadster, this time with the Pirelli track tyre) felt exactly the same for a BIG number of laps, then the tyres fell abruptly.

    We also had this happening in a recent league (last month or so) with Formula C. In the tracks where the race lenght was iffy to get to the end on one set of tyres, the guys that changed tyres didnŽt have any pace advantage at the end. The tyre with 20% life left felt the same as with 90%. Only if you hit dead 0 you started feeling anything at all.

    Something is not working.

  2. #2
    Superkart Pilot Stocky's Avatar
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    Are you talking about the in game (tire picture) indicator? Because when that shows zero green left, it means the tire is at 50%.

    Only 50% of the tire, is represented in that picture.

    At 50% is when the grip starts to go. We do long league races, with 7x tire wear.

    If you mean the profiler, then never mind, that tells you the true percentage of tire.
    Last edited by Stocky; 20-10-2015 at 22:03.
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  3. #3
    WMD Member Jussi Viljami Karjalainen's Avatar
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    I've noticed a big difference in feel with ~20% left on the in-game display (60% through the external API). The absolute amounts of grip are still roughly the same, but how the grip behaves on the limit changes, it becomes less progressive, loss of grip happens more suddenly and sharply, and even though the same lap times are still possible, I need to be more careful when trying to reach them. The tyres' temperature fluctuations change dramatically as you wear down the tread thickness as well, they both heat up and cool down quicker, leading to larger fluctuations.
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  4. #4
    LMP2 Pilot hkraft300's Avatar
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    Interesting info, Stocky. Is that on every tire? Surely not!

    I found the FC can be pushed hard beyond "0%", this explains it.

    LMP tires hold up well to abuse. Near 0% the grip is falling away fast. Not sure of road cars. GT3 tires aren't great below the ~10% mark. I'm not a good/consistent enough driver to be doing accurate testing on my own.
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  5. #5
    Superkart Pilot Stocky's Avatar
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    Many in our league use the pcars profiler, and when the green indicator picture of the tires in game goes away, even though it looks like you are at 0%, the profiler says 50%. So we've come to the conclusion that the tire wear indicator only represents the first 50% of your tire wear.

    I assume it's every tire, for every car, but only tested it with FA mediums & softs.

    We play at 7x tire wear, so we're very familiar with this.
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  6. #6
    LMP2 Pilot hkraft300's Avatar
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    Cool
    There was talk of the wear indicator only showing "tread" or "compound" wear. If what you say is true, it throws a curve ball in the mix that: ok your indicator is at 0, so push til your pace drops off significantly or box the lap before! However it sort of defeats the purpose of said indicator and we're back to square 1, aren't we?
    But I'm on console so can't verify. 7x tire wear reveals a lot about setup, driving style and tire behaviour. Interesting stuff.
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  7. #7
    Moderator Bealdor's Avatar
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    http://forum.projectcarsgame.com/sho...=1#post1094635

    Quote Originally Posted by Doug914 View Post
    Yes at around around 40-50 % you are through the tread rubber and into the supporting rubber bonded to the carcass . At this point performance drops dramatically with with most race tires and and not so much with street tires. And why some cars still seem drivable with the wear meter at zero. You are still on borrowed time either way. The meter is set to show tread wear, where the profiler must show the total of both.
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  8. #8
    LMP2 Pilot hkraft300's Avatar
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    Thank you eel man.
    Query solved! where would we be without your mad forum post-search skills
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  9. #9
    Moderator Bealdor's Avatar
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    Quote Originally Posted by hkraft300 View Post
    Thank you eel man.
    Query solved! where would we be without your mad forum post-search skills
    LOL, it's pretty simple once you got the hang of it mate.
    You just need the right keyword (in this case "tread") and limit the search to SMS posts (User name: SMS) or specific user posts (User name: Doug914).
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  10. #10
    Superkart Pilot
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    You need to translate that to the in-game meter guys, the current way to display it makes no sense.

    Console guys are left in the dark, and even worse, being confused. The tyre life indicator is a mess and we canŽt even set the cooling of cars with no MOTEC display as we donŽt have anywhere the wáter and oil temperatures.

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