Help with vibration

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Aug 24, 2019 | 07:21 AM

ReidG

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Joined: Aug 2019

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Help with vibration

Hey all. Got a 2015 F250 Crew cab/long box. Got a vibration that starts at 115km/hr and up. Just put on new Goodyear Duratrac 295/65/18’s. All balanced and 4 wheel alignment. Did not fix the problem. Any ideas?

Aug 24, 2019 | 07:32 AM

Deuce40s

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Joined: Oct 2013

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From: NC

That's 71mph in freedom units. At that speed it could be about anything. Can you tell if it's front or rear? If you're sure it's not tires, then it could be the driveshaft slightly out of balance, or slightly worn u-joints.

Aug 25, 2019 | 05:41 AM

Gints

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Joined: Jun 2014

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From: CT

Do not do anything before you road force test the wheels. I balanced wheels three times still have vibration exactly at that speed, did road force test and readings was 42, 47, 64, 67 with acceptable being 40. Continental agreed to replace all four of them.

Aug 25, 2019 | 06:16 AM

ReidG

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Tires

Was doing it on the old tires as well. Seems to be coming from the front end.

Aug 25, 2019 | 07:46 AM

RV_Tech

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Joined: Jan 2010

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From: Bristol, TN.

Quote:

Originally Posted by Gints

Agree road force balancing is essential, had same issue with both old and new tires until road forced balanced. IMHO it should be essential with all Super Duty truck tires. Just standard rebalancing did not fix the issue.