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slight shuddering/shaking at 120km/h

Old Jun 16, 2022 | 05:16 AM
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slight shuddering/shaking at 120km/h

Just recently noticed that my car slightly shudders/shakes on and off throttle (more noticeable on throttle) at 120m/h or above, can feel it through the seat and steering wheel. Doesn't do it below 120km/h at all though.
I'm thinking the wheels might need to be rebalanced since I did get new 2 piece wheels fitted about a month ago.
Does anyone have any ideas what the problem could be if it isn't a wheel balance issue? Thanks.
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Old Jun 16, 2022 | 10:13 AM
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Originally Posted by dctwc63s
Just recently noticed that my car slightly shudders/shakes on and off throttle (more noticeable on throttle) at 120m/h or above, can feel it through the seat and steering wheel. Doesn't do it below 120km/h at all though.
I'm thinking the wheels might need to be rebalanced since I did get new 2 piece wheels fitted about a month ago.
Does anyone have any ideas what the problem could be if it isn't a wheel balance issue? Thanks.
It sounds wheel related to me, which could mean the wheels need balancing, a wheel is bent, or there is a manufacturing defect on one or more of your tires.
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Old Jun 16, 2022 | 10:45 AM
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Originally Posted by C43HeartBoost
It sounds wheel related to me, which could mean the wheels need balancing, a wheel is bent, or there is a manufacturing defect on one or more of your tires.
Thanks mate. Hopefully wheels just need a rebalance.
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Old Jun 16, 2022 | 11:18 AM
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Yeah, I would start with the wheels and tires. Get them road force balanced, and not just spin balanced. This will uncover issues with the tires and make sure that the combination of wheel and tire roll as round as possible under actual road force.
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Old Jun 17, 2022 | 04:12 AM
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Originally Posted by superswiss
Yeah, I would start with the wheels and tires. Get them road force balanced, and not just spin balanced. This will uncover issues with the tires and make sure that the combination of wheel and tire roll as round as possible under actual road force.
Ok thanks superswiss.
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Old Jun 17, 2022 | 12:47 PM
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What tires are you running?

How old are they? Do you know tread depth remaining?

If they are Michelin Pilot Sport's, they can start to vibrate, act shaky towards the end of their life.

As superswiss says, your first stop should be a roadforce balance. Can sometimes be hard to find them locally at an independent euro shop, but I know Discount Tire has the Hunter machines that do RFB.
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Old Jun 17, 2022 | 05:34 PM
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Originally Posted by noremaC
What tires are you running?

How old are they? Do you know tread depth remaining?

If they are Michelin Pilot Sport's, they can start to vibrate, act shaky towards the end of their life.

As superswiss says, your first stop should be a roadforce balance. Can sometimes be hard to find them locally at an independent euro shop, but I know Discount Tire has the Hunter machines that do RFB.
Running ps4s. Quite new aswell, been on the car for around 3 months and less than 2000km on them.
Not sure if it will be easy to find a shop that has RFB as im not in the US. Will get wheels rebalanced next week first to see if it fixes the issue. If not then look for a shop that has RFB.
Thanks.
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Old Jun 18, 2022 | 06:41 AM
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Found the reason for the issue. Parked my car more to the left and found 50g worth of weights on the ground. lol.

Thanks for the input guys.

Last edited by dctwc63s; Jun 18, 2022 at 07:09 AM.
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