02-25-2024, 08:19 PM | #1 |
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Going on first tire change on 666M wheels. PSS or PS4S?
Going on first tire change on 666M wheels, got 17,700 miles out of my 2018 M3 Competition.
I would say the stock PSS were great tires, but did lose traction pretty easily, even when new, and are absolutely ridiculous now even with 3mm left on rear tread. I can't even accelerate at all without serious wheel spin in M mode. Has anyone recently gone with any of these options without issues and without spacers on stock M3 Comp? 1. PS4S - 265 front 295 back 2. PS4S - 265 front 285 back 3. PSS - 265 front 295 back. |
02-25-2024, 10:09 PM | #3 | |
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That’s my exact setup and I love it! 295/30/20 look so good from behind and I’ll never use anything other than Michelin PS4s. No need to go wider than 265 in front (I don’t think you can but I could be mistaken). |
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02-25-2024, 10:15 PM | #4 |
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02-25-2024, 11:07 PM | #5 |
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Although a 295 fits on a 10” wide wheel, a 285 on a 10” wheel will likely have more grip due to better support from the wheel. There are plenty of tire comparison tests that demonstrate stuffing a wider tire on a narrower rim doesn’t result in increased grip/performance. I once believed wider is better but I now know that’s generally not the case. A 295 will overhang a 10” wide wheel by ~0.4” on each side.
I’ve used PSS and PS4S tires on the same wheels and same tire sizes. PS4Ss definitely have more grip than PSSs but it’s not by a large amount. PS4S also has a softer sidewall so you have to run higher pressures to get the same steering and turn-in response as the PSS. You can’t go wrong with either tire but the PS4S is the newer tire. If lack of grip is a concern then why not step up to a stickier tire? Stepping up to a tire with a slightly lower treadwear rating will give you considerably more grip but also slightly reduced tread life. I recently tried the Yoko v601 on my r56 Mini Cooper S, switching from PSS. The grip increase was considerably higher than what I was expecting and what the 280 TW rating suggested (PSS TW rating is 300). No increase in road noise and vibration but a slight increase in harshness due to a stiffer sidewall. BMW has homologated the Yoko v107 (240 TW rating) as an oem tire for the g8x and they’ve been using it on g8x M Performance wheel sets, too. I’d definitely consider the v107 and v601 tires if you’re looking for a tire with more grip. |
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02-26-2024, 04:47 AM | #6 | |
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This car is a 3 day work week daily driver. I want it to handle ok in the rain, but also want to be able to floor it at a red light and have it hook up decent on my non tuned car. Also want to be able to take a corner sharp, although I'm sure any of these tires handle cornering just fine. A lot to unpack here and think about from these responses. |
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02-26-2024, 06:56 AM | #7 | |
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02-26-2024, 02:46 PM | #9 | |
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In the sizes I’ve used when replacing PSS with PS4S (275/35-18, 285/35-18, 265/35-19 and 305/30-19), the PS4S has a softer sidewall than PSS. So I’d say: Stiffness/harshness - Yoko > PSS >= PS4S When my PS4S need to be replaced, I’m going with the Yoko v601 or, if I decide I want a much higher grip tire for the street, the Yoko A052 (which I’ve used on track on an e92 M3). |
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02-26-2024, 06:16 PM | #11 |
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Road noise is the “rumble” of “hum” you’ll hear in the cabin as background noise. Have you ever heard a trunk with 40” diameter tires drive by? That’s tire/road noise. It’s a function of tread pattern, tread depth, tire compound, suspension geometry (e.g., a tire with more toe-in will make more road noise than a tire with zero toe-in), etc. Once the tread blocks on the inner most and outer most edges of a tire become feathered (uneven wear with a lip that you can feel as you run your hand around the tread), the road noise becomes much louder, more annoying and more rhythmic/repetitive in nature.
I would rate them all pretty much equal. Tires from the Extreme Performance category tend to generate more road noise than tires from the Max Performance category. |
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02-26-2024, 07:22 PM | #12 |
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Thanks. I think I’m sold on the Yokos now. Seem like a massive grip improvement. And I guess I should stay with 285 on rear.
Edit - the more I think about this, and I'm glad I've been, I think I'm just going to stay with the PS4S. The reviews on PS4S are much better than Yoko and I do value ride quality and tire noise as well. I have 17k on my stock PSS and the tires are really great except doe the real wheel spin. They are quiet and firm but not too firm. I don't want to give that up going with a Yoko tire. There must be a reason why the Yokos are $1000 for 4 tires while the PS4S are $1700 for 4, and not just the brand name. Last edited by noone; 02-27-2024 at 09:05 PM.. |
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