Truck Tire Physics

Discussion in 'Car Modding' started by FuNK!, Aug 31, 2019.

  1. FuNK!

    FuNK! Registered

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    Hey,

    I'm a big fan of Truck Racing and really enjoyed the respective mod from @Tommy78. I just tried to revive it for personal use, but found that the trucks are barely driveable because they appear to have way too less grip - while AI is just driving away and can take corners really quick, I have to slow down too much to stay on track. I assume it must be the (player) tires, simply because so much has changed in that area of physics :(

    I already tried to fix the tires using the online tools made by Chris (redapg), but I do just feel a very little bit of improvement - still, I could have used the tools wrongly :confused:

    So, I would really appreciate if someone could help me here - no matter if that's by just pointing in the right direction or by providing completely new tires :cool:

    Thank you!
     
  2. FuNK!

    FuNK! Registered

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    OK, looks like my request/question was way too generic. So let's try a precise question instead: How do I increase the grip of an tire? Is there a single factor that could be modified or is it required to modify the curves?
     
  3. Rastas

    Rastas Registered

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    Try mess whit theses lines until you got it,but theres more stufs,this is only the basic,attention,im not a PRO hehe
     
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  4. Bernd

    Bernd Registered

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    If i remember it right, chris (redapg) once told me, that the tgm values
    StaticBaseCoefficient=
    SlidingBaseCoefficient=
    can be used to modify the basic grip.
    Just try it out.
     
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  5. FuNK!

    FuNK! Registered

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    What lines? :D
    Will have a look, thx! ;)
     
  6. Rastas

    Rastas Registered

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    StaticBaseCoefficient=3.3254
    SlidingBaseCoefficient=2.3
    Sorry,looool,theses lines.
     
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  7. Lazza

    Lazza Registered

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    I was going to link you to the tyre pdf but I can't find it on the s397 site. Those two lines are indeed responsible for the overall grip, and won't break anything else.
     
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  8. Rastas

    Rastas Registered

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    RubberPressureSensitivityPower=(-1.2,5.4e5,5e5,1)
    Try mess whit this line too,but only the frist value.
     
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  9. Corti

    Corti Registered

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    Attached Files:

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  10. Corti

    Corti Registered

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  11. TheGame316

    TheGame316 Registered

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    Depending on what tgm tyre file you started with, you may find the mass/inertia of the vehicle may be too much for the tyre and grip loss is occuring sooner due to that. It may be a situation where building a tyre using the tgm spreadsheet would be better. Plus, you may be able to get a bit more information on construction of the tyre(plys, belts etc)
     
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