11-28-2023, 09:26 AM | #1 |
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recently purchased Michelin Pilot Sport A/S 4
We recently purchased a set of Michelin Pilot Sport A/S 4 and road noise seem to be the same as our older Pilot Sport 4S run flats (with dry rot). Only had it for a few days, does it need a break in period before it run a little bit smoother? I was under the impression that a new set of non run flats would increase comfort ride.
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11-28-2023, 10:22 AM | #2 |
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They should run a little "smoother" than the run flat version. Make sure they are not over pressurized.
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11-28-2023, 01:50 PM | #3 |
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Also consider what roads/streets you were driving on when you got that impression. Busy streets are typically way noisier because the smooth asphalt top surface wears away exposing the gravel aggregate. They look the same as other streets, but can have an incredible difference in tire noise.
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11-29-2023, 09:34 AM | #4 | |
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Guess I'm expecting a big difference on ride quality as others reviewed. I should of went with the Conti you recommended on another thread, it was much less expensive too |
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11-29-2023, 09:36 AM | #5 | |
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11-30-2023, 10:26 AM | #7 |
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What I'm trying to say is road noise and ride comfort did not improve with the new non RF tires over the older RF tires. not sure if there is a break in period with new tires.
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11-30-2023, 10:35 AM | #8 |
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I do not think there is really a break in period. I did exactly what you did - went from run flats to AS 4+ and while I did notice an improvement, it was not a "wow" reaction. I was expecting more based on posts here.
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11-30-2023, 10:43 AM | #9 |
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I actually went the other way on my previous C7 Corvette and experienced a noticeable stiffening with the runflats.
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11-30-2023, 12:41 PM | #10 |
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That's exactly my first impression, but going from rock hard old run flats to new non runflats should yield some of improvements, but sadly not the case
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12-01-2023, 08:57 AM | #11 |
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Related question: are all-season tires known to be significantly noisier than summer-only gumballs? I ask because of 2 anecdotal experiences:
1) On my 650i, when I went from old runflats to new non-runflats (summer tires, bridgestone S007 at the time, though I'm on to PS4S now), I definitely got that "WOW" experience of how much smoother and especially quieter they were. 2) On the family minivan, I tried my darnedest to find the quietest, smoothest-riding all-season tires for long road trips (ended up with Michelin Primacy Tour A/S), and it was, ya know, ah-ight, for a little while, but quickly back to markedly noisier than my summer-tires equipped bimmer. I know there're about a million variables in play, but the base question of whether A/S tires are inherently noisier than summer tires I guess is the point here? |
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12-04-2023, 02:15 PM | #12 | |
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12-04-2023, 04:25 PM | #14 |
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12-04-2023, 04:31 PM | #15 |
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Since almost all flat tires are caused by nails, screws etc. resulting in slow leaks, all you really need is a small portable air compressor to keep the tire inflated until you get the car to a repair facility. With tire pressure sensors you can monitor the tires inflation. Don't pull the object out of the tire, consider it a temporary plug.
Sometimes I've found a small nail/screw in a tire and when I applied a soapy water (or spit) to the object, it did not bubble up. In those cases, pulling the object out was okay because it did not puncture the tire. If it bubbles up, the tire will need to be plugged. |
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12-05-2023, 07:59 AM | #16 |
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Good point, let me emphasize: The plug kit is only a last resort to extend my limp-home range in the case of a big/fast leak.
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12-06-2023, 02:08 PM | #17 | |
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Road noise is caused by the tread pattern more than the structure of the tire. More grooves for wet traction will cause more road noise, and the actual pattern or the tread itself can cause increased road noise. While the structure can aid in the noise, it is not the cause of the noise. The structure of the tire does, however, impact the ride quality. Runflat tires tend to be stiffer than non-RF's when it comes to bumps and potholes. I changed out the RF's on mine, and noticed an immediate change in how the crappy roads here in NC were not as noticeable with the new tires. Road noise was not noticeably different. I am sure that you can find runflats that are quieter than non-RF's, and vise-versa. But equating the road noise and ride comfort as the same thing is not accurate. |
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12-06-2023, 03:07 PM | #18 | |
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12-06-2023, 04:49 PM | #19 |
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Ahh, it was apparently grammar that got me.
You meant "road noise OR ride comfort" The "and" ties them together in the Enrish language, my bad. I should drink more when I read posts these days. I take stuff too literal. Carry on. As a side note, they are redoing I-40 near my house. Whatever they are using to pave with gives my Michelin AS3's the worst road noise ever. I thought it was the tires until I had to get the rental while mine was in the shop after getting rear ended. The Goodyear's on the Challenger were worse than the Michelins. |
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12-06-2023, 05:56 PM | #20 |
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Run flat tires will transmit more "high frequency" noise/harshness by vertu of their stiffer sidewalls. The more flexible sidewall of non-rf tires will not transmit as much "harshness".
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