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Thread: My Perfect Sim: Discussion

  1. #21
    LMP2 Pilot hkraft300's Avatar
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    Quote Originally Posted by GTsimms View Post
    So you think the video above is realistic? It's definitely not!
    You haven't driven my car in the rain with its cheap Chinese tyres

    The steering angle will depend on the steering ratio. Then there's the radius of the turn etc. I don't think you're taking such tight corners in your patrol vehicle at 100mph. Street tyres do have some grip but nothing compared to race slicks. I'm used to race cars in sims and have to significantly slow my pace in street cars.

    That said: it's easy to test on a skidpan and prove without doubt the level of grip available in the AMS street tyres.
    Pc2tuner (I forgot its new name) type of data logging tool can tell you exactly the peak lateral grip the street tyres have. According to Zeratall the GT slicks are bang on. I doubt Pirelli would have let pc2 ship with poor representation of their brand.
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  2. #22
    Superkart Pilot Twinz's Avatar
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    They seemed to get it right on the 86. If anything, the grip from the default "loose" setup is on par with compounds that have higher grip than the stock tires. (Although the progressive break-away characteristics seem closer to stock)

    In my RL vs PC2 comparison video the RL tires were Advan AD08's and those things have a lot of grip for "street" tires.

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  3. #23
    Moderator GTsimms's Avatar
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    The Cooper, Goodyear, Michelin, and others here in the US on dry pavement have a lot of grip at 40 mph. You can turn the wheel hard to the left or right and not break traction.

    Rain, that's another thing. Ford's limited slip differential will allow the right rear tire to break traction easily. I've had a lot of those oh crap moments in the rain or being temporarily sideways.
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  4. #24
    LMP2 Pilot hkraft300's Avatar
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    Quote Originally Posted by GTsimms View Post
    The Cooper, Goodyear, Michelin, and others here in the US on dry pavement have a lot of grip at 40 mph. You can turn the wheel hard to the left or right and not break traction.
    .
    Sure. But until you measure the grip scientifically in the sim (and do some basic math) you can't really call it unrealistically low grip.
    All the current sims are so bloody advanced these days.
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  5. #25
    WMD Member bmanic's Avatar
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    Quote Originally Posted by GTsimms View Post
    hkraft300

    IDK why you think, that I don't know what I am talking about. The example is below (not supercars, just normal) The loss of grip is way too quick (video below) in many sims compared to RL driving which should not be happening at the lower speeds in the video. You should not be hearing the tires skidding or have any loss of grip which is happening in the video at the turning angle. It's as I explained somewhat here too!

    Hmm.. depends on the real life tires and track condition and of course weight of car etc. The video you posted is not a very good example as you were doing pretty high speeds. I've had tires squealing at only 50km/h in tight corners on asphalt.. that's about 30mph. You were doing a minimum of 50mph in the video which is almost highway speeds. I'd say the video is a pretty good example of how it's in real life, though I have not driven that car around that track ever in real life.

    Also, in that last corner you locked up the tires so of course you plow out of the track.. again, you were doing more than 50mph into a corner that requires less speed.

    Even super grippy cars can only do slow speeds in tight corners. F1 Monaco.. look at the speeds in some of those corners. Apparently the slowest corner requires a F1 car to do only 30mph!!
    Last edited by bmanic; 14-08-2019 at 20:07.
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  6. #26
    Moderator GTsimms's Avatar
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    Quote Originally Posted by bmanic View Post
    Hmm.. depends on the real life tires and track condition and of course weight of car etc. The video you posted is not a very good example as you were doing pretty high speeds. I've had tires squealing at only 50km/h in tight corners on asphalt.. that's about 30mph. You were doing a minimum of 50mph in the video which is almost highway speeds. I'd say the video is a pretty good example of how it's in real life, though I have not driven that car around that track ever in real life.

    Also, in that last corner you locked up the tires so of course you plow out of the track.. again, you were doing more than 50mph into a corner that requires less speed.

    Even super grippy cars can only do slow speeds in tight corners. F1 Monaco.. look at the speeds in some of those corners. Apparently the slowest corner requires a F1 car to do only 30mph!!
    I didn't lockup the tires, that was a loss of grip from turning and I was trying to be easy on the input. The game is actually worse than the video.

    But FYI, Project CARS 2 tire model is well done. But, it has some minor issues in the underlying code. I imagine it has been refined by now! (Post #15)
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  7. #27
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    Quote Originally Posted by GTsimms View Post
    Lol, I didn't lockup the tires! That was a loss of grip from turning and I was trying to be easy on the input. The game is actually worse than the video.
    You were going 70-60 mph there, in a very tight corner. I don't see how it would be possible in real life to make this any better.
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  8. #28
    Moderator GTsimms's Avatar
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    Quote Originally Posted by cpcdem View Post
    You were going 70-60 mph there, in a very tight corner. I don't see how it would be possible in real life to make this any better.
    This is why, the sim community can't have reasonable discussions.

    So, I guess about 25 years of driving and 13+ as Police Officer disqualifies me from knowing. How a road tires work. I'm done.
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  9. #29
    GT5 Pilot rich1e I's Avatar
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    He didn't make the corner at 70. By the time he entered that corner he slowed down to 50, then to 40. The Camaro is heavy, so it should understeer naturally a little bit but to me it looks like it oversteered.

    Btw, looks like Automobilista has VIR, that's awesome!
    Last edited by rich1e I; 14-08-2019 at 23:24.
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  10. #30
    GT3 Pilot
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    Quote Originally Posted by GTsimms View Post
    This is why, the sim community can't have reasonable discussions.

    So, I guess about 25 years of driving and 13+ as Police Officer disqualifies me from knowing. How a road tires work. I'm done.
    Well, I am not a police officer, but I live in a country with twisty roads, even highways are often twisty and in my 25 years of driving I would never expect to make such corners in such speed with my road car. But what do I know, I am a simmer and can't have reasonable discussions. Guess I should go back to Grid for realistic driving.
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