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South SF is not legenday in their ability to communicate, so Iām not 100% sure. All the advisor told me (and this is after a ride-along with the lead tech and the failed 3rd attempt at alignment) was that the Roaming Dude was on-site and schooled the team on how to do a tough alignment. Some of the trucks are, apparently, just a little trickier.I had a feeling it could be an even deeper issue. My 2nd alignment I was told the lead tech did the alignment and did a training day with every one. Thatās worrisome if this got worse on the second try. How did you get this roaming expert in house for you?
I wonder if shake could be a bad subframe?3rd visit update: rear tires are bing replaced. They wonāt replace the fronts that have half the original tread because it has even wearā¦ Iāve asked for an official tread measurement but when I did it, I came up with 4mm when new has 8mm. Trying to fight it, but I may just have to go through Pirelli for warranty.
So far inspection has lead to a leaking rear half shaft that is being replaced. They are doubtful that is the cause of the shaking on bumps.
I got a loaner and it is solid. Wheel is centered. Extremely minimal drifting. Hitting bumps doesnāt cause the truck to shake. Weāll see what happens if they finish tomorrow.
Follow up after having alignment done by a motorsport shop that specializes in alignments, corner balancing, etc. They spent quite a bit of time on mine, partly because they'd never done a Rivian, partly because they didn't really have any factory specs to go by and partly because some panel remove was required (or they removed thinking it was required).
Anyway, below are my before/after ... both how the steering wheel looked and the numbers.
Did about 50 miles since, including on crowned highway sections, and it's straight as an arrow now. I still think the quad motor set up, how they're calibrated, throttle inputs, etc play into how the truck behaves with regard to tracking -- i.e., some of the above could be misconstrued as alignment issues. But as far as my steering wheel and how the truck reacts when letting go of the steering wheel, an alignment corrected my issues.