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Weird vibration only between 62–70 mph

MileageDaily27Community StarterFeb 20, 20262023 Rivian R1T Quad-MotorPennsylvania
2023 Rivian R1T Quad-Motor, about 78,000 miles. Car is smooth around town, but on the highway I get a vibration in the steering wheel and seat between about 62 and 70 mph. Above that it actually gets a little better. Tires look okay to me. Where would you start before I start throwing parts at it? Any data points from owners would help.
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7 replies

MileageDaily27Community StarterCommunity StarterFeb 20, 2026permalink
Cleared nothing. I want service to see the alert on the 2023 Rivian R1T first. If that fails I'll eat the diagnostic fee.
TowNerd18Community StarterCommunity StarterFeb 20, 2026permalink
That's a good start, but I wouldn't stop there. Get a real battery/charging test on the 2023 Rivian R1T, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. Verbal 'we'll take care of it' is not a plan. I've seen both outcomes, which is why I'd test instead of assume. Heat soak after errands is the other window.
BoostedRoadie82Community StarterCommunity StarterFeb 21, 2026permalink
Agree — and I'd add this: A pressure test beats staring at a dry driveway if the 2023 Rivian R1T is losing coolant with no puddle. That's the branch I'd chase this week. Do that first. I'd rather be boring and correct. Might be overthinking it, but I'd rather overthink than overspend.
TowNerd18Community StarterCommunity StarterFeb 21, 2026permalink
I hear you, though I'd still want a second check. Swap the cheap/easy piece first on the 2023 Rivian R1T and see if the fault moves. If the cheap test changes it, stop and reassess. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. I'd want that in writing, not as a promise. This is the filter I use when the thread starts repeating itself. I'm in no rush to be a hero on it.
BoxerGarage95Community StarterCommunity StarterFeb 21, 2026permalink
Ask what changed right before it started. Write temp, speed, and in-gear vs coast when the 2023 Rivian R1T does it — then decide on parts. Don't erase codes until someone who can help has seen them. Stop there until you know. Parking it somewhere I can hear it better next time.
TireDad23Community StarterCommunity StarterFeb 21, 2026permalink
This is usually cheaper to test than to guess. Move a coil or plug on the 2023 Rivian R1T if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. This is from a 2023 Rivian R1T in Pennsylvania with 78,000 miles. If you share a photo of the worksheet, easier to sanity-check. Checking again after work.
NorthCamper68Community StarterCommunity StarterFeb 22, 2026permalink
Log the conditions before you spend. Swap the cheap/easy piece first on the 2023 Rivian R1T and see if the fault moves. If the cheap test changes it, stop and reassess. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. Any freeze-frame data saved? I'd rather look cautious in this thread than stuck later.
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