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Old 01-21-2023, 03:58 PM #1
jonmcginnis jonmcginnis is offline
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Pulsating noise...with NEW tires? Am I being too picky?

Would really love to get some opinions regarding pulsating tire noise with NEW tires.
Just recently bought new Cooper Discoverer Rugged Treks, 285/70r17. I have a 3 inch Eibach Stage 2 lift.
Had Nitto Ridge Grappler 265/70r17 previously.

In my limited experience, mud tires, some beefier AT's, and hybrids with chunky tread columns make a hum noise to a varying degree...depending on the tire. I accept this.
However, my question to everyone is...Should they (or can they) make a pulsating noise? When new?

Mine are! Tire shop AND Toyota dealer have spent lots of time trying to help me figure it out. But they are all new, balancing well, nothing out of round or wrong with them, they road forced them as well...can't find anything wrong. I can deal with the hum noise...that's just the tread noise that comes with these types of tires. But I feel like they shouldn't be making a pulsating noise brand new. I'm in the process of switching the spare around the truck to try and isolate the noisier of them if I can. But I can't seem to isolate any one tire. On the other hand, how would it be more than one? Wouldn't they be asynchronous in terms of the noise if it were several or all of them? Driving me a little nuts...I think the shops have genuinely tried to help me, but maybe they think I'm being picky somewhat. Maybe theyre right. They can hear it too, and there's even a very slight shimmy to the truck with it. And theyre all well balanced! The shops say they think it's within a certain tolerance for this type of tire and I shouldn't stress over it.

Just wondered if any of you have experienced anything like this with your tires. Again, I'm in the process of switching the spare around (which is also a new rugged trek) to see if I can figure it out. Maybe I just need to quit worrying and move on?

Grateful for any insight.

Last edited by jonmcginnis; 01-21-2023 at 04:01 PM. Reason: Typo
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Old 01-21-2023, 05:12 PM #2
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Pulsating? Like the Us and Them from dark side of the moon heart beat?

I used to have tires that would thump from flat spots, but no pulsating. That's odd.
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Old 01-22-2023, 06:55 PM #3
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Marvin_Rall Marvin_Rall is offline
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It's possible that the pulsating noise you're hearing is caused by a tire out of round or an imbalance. However, since the tire shop and the Toyota dealer have checked the tires and found nothing wrong, it's also possible that the noise is within an acceptable tolerance for the type of tire you have. It's not uncommon for some tires to make more noise than others, depending on the tread pattern and design. If you are still concerned, you could try rotating the tires to see if the noise changes. If it does, it may indicate that one or more of the tires is causing the issue. Otherwise, it may be something that you'll have to learn to live with. It's also a good idea to consult the tire's manufacturer for recommendations or warranty.

Last edited by Marvin_Rall; 01-25-2023 at 05:06 PM.
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Old 01-22-2023, 07:26 PM #4
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How's the front end alignment?
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