11-11-2020, 10:03 AM | #23 |
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11-11-2020, 10:24 AM | #24 | ||
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11-11-2020, 03:19 PM | #25 |
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11-12-2020, 03:18 AM | #27 |
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This is the Dakar version. Overhere in the old country we don't have paved roads yet. All horses & cariages here I'm terrible at taking pictures with my iPhone sorry. The car's stance is oem/stock: This morning I drove around for about half an hour in terrible weather, pouring rain, 9 degrees Celsius. Braking on wet asphalt : Excellent, out of this world, almost incredible, not kidding. But hey, I drove my former PSS for 2 years and they were worn out, so new PSS should feel alright as well, but the brake-bite : Defying physics in the rain imho. Traction/problems: Same story, almost non existent (relatively off course) in the rain when not pushing it off course. 75% throttle in the rain: No sweat at all. (500HP/700Nm) The tyre feels a tad more comfy , but less noisy, maybe a tiny bit. Steering on highway speeds is ok in the rain, it feels a tad less pointy but no understeer until now Very very good replacement tyre vs OEM PSS, the PS4S. Cheers Robin |
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11-12-2020, 03:32 AM | #28 |
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11-18-2020, 11:43 AM | #29 |
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I went one step wider in front and rear and switched to PS4S, I like them better. Hold traction better, less road noise.
A bit uglier though, very boxy looking tires. |
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11-19-2020, 12:40 AM | #31 | |
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Based on the photo, If I was guessing (that's all I could do from the info I have), I am thinking that your pressures are too low (evident from sidewall scuffing) and possibly, your driving style is too aggressive, and needs to be smoothened out a bit (chopping of the edge blocks). Just guesses on my part, but that's all I got, lol. |
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11-19-2020, 04:54 AM | #32 |
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That looks like a tire that was abused heavily due to driving "over the top of the peak" of the Fc vs slip angle line. Most likely it was a car someone was driving with DSC enabled and they were putting in way too much steering lock and letting DSC reign things in. With the proper pressures, DSC fully off, driving to the limit of the tire, but not over, severely overheating the tread like that isn't nearly the issue shown in this example. Under the same abuse, a full on track tire would show similar issues...heck the cords would be showing on an R7, lol.
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11-19-2020, 02:54 PM | #33 | |
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2020 X3M non-comp, Alpine White over black : Exec Pkg, ventilated M Sport seats, 20"s
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11-19-2020, 03:00 PM | #34 | |
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With camber plates, if you run near zero front toe (just a tad bit of toe-in for street use), you will not wear the inside edges excessively btw, even with -2.5 camber. However, the car will like to tramline more as you go more and more negative on camber.
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11-19-2020, 05:47 PM | #35 |
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I've done multiple track days with PS4S tires and no camber plates, and I've never seen tire wear like that. What PSIs are you running between sessions?
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11-20-2020, 07:45 AM | #36 | |
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One big difference with the M2C is the immediate and obvious benefit reducing steering lock at corner exit. VIR turns 1-2 and CMP 12-13 are perfect examples where I seem to really gain on cars when reducing steering lock and dramatically reducing push to the outside line.
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11-20-2020, 10:33 PM | #37 | |
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The best thing he can do, is drive with an instructor to improve his smoothness, and to pay attention to physics to know when the electronics are saving his butt, then the tire will also hold up better. I'm thinking that those tires should be good for at least 4 to 6 track days if driven properly. |
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11-20-2020, 11:34 PM | #38 | ||
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New to hpde and definitely need to work on smoothness. |
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11-21-2020, 05:26 AM | #39 | |
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11-21-2020, 08:32 AM | #40 |
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11-21-2020, 02:20 PM | #41 | |
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Most folks are going from worn (or nearly worn) PSS to PS4S. So, naturally, there will be some placebo effect towards newer being better, on top of the new tire having better traction because, well, it's newer. Same goes for suspension systems. People usually go from a worn out suspension to new coilovers and swear on their mother's grave that it's "more compliant". Those who go from new stock suspension to coilovers instantly praise the new system just because it feels different, but in reality there are always tradeoffs at low vs high speeds, over bumps, etc. Fair way to test suspensions would be to compare both with say 10k miles. Same with tires. I bet that if you surveyed a hundred M2C owners at random with PSS and PS4S back to back, 90 of them wouldn't be able to tell the difference on the street. And those who could wouldn't notice any significant performance improvement. |
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11-21-2020, 03:29 PM | #42 |
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The MPSS have really stiff sidewalls and the worst part about them is the harsh jolt when going over expansion joints. The MP4S are not as harsh and feel more compliant. Theoretically speaking, a stiffer tire will give you more direct response, but at the expense of comfort. I suspect this is what some are eluding to. This could however be misleading. Sometimes a tire can feel sloppy, but when put to the test it'll put down just as fast if not faster lap times. Even so some don't like "the feel" as it does not inspire confidence.
It's also worth reminding, the MPSS tires for the M2 are bespoke whilst the MP4S are an "off the shelf" general tire. This also plays a factor in how well the tire handles and performs. |
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11-21-2020, 05:35 PM | #43 | |
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11-21-2020, 06:51 PM | #44 |
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I went from PSS to PZero to PS4S on my F10 M5. So I can't tell you back to back. What I can tell you is the PSS were good wet or dry, street or track, the P Zero sucked and the PS4S were the best I had on the car. I agree the PS4S felt more compliant, maybe slightly less responsiveness, but the PS4S were much better acceleration traction than the P Zero and extremely good on track across a more broad temp range than even the PSS.
PS: I've done some back to back tire comparison drives with Michelin tires at various events and I can tell you for certain the differences in the tires demonstrated at those events in just the 3 laps you'd get. Especially against competitors. Mostly in parking lot autocross courses so the tires were pushed beyond normal street driving. And determined the PS4S to be an incredibly good street and track tire.
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