No OTA for tire size changes

[mikehmb]

FYI - just got a call from Rivian to follow up on my request(s) to update the tire size on my truck (went from OE 21” to OE 20”). They twice previously told me they’d do an OTA. This call was to let me know that the previous employee was misinformed - presumably then shot and buried in the back, behind the R2 mock-ups - and that indeed I need to go to the SC to do this.

<sigh>

I asked what the real benefits were, and he said it was tied into multiple systems. Then he said “even gearing” at which point I threw my hands up in the air.

Anyway - OTA tire size change is a no-go. Because apparently they change gearing based on a 1” tire size change. LOL

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[jjswan33]

Its funny how every employee you talk to manages to provide new mis-information.

For me they said it was needed it in shop due to camera calibration

 

[mikehmb]

Maybe if I call back, they’ll tell me that the tires have a different tread depth and shed more rubber per mile, so there’s an internal calibration needed for my daily granola intake to offset my cheeseburger consumption.

Because that would make almost as much as sense as changing the gearing on a fixed-gear vehicle.

 

[Dark-Fx]

For me they said it was needed it in shop due to camera calibration

I'm pretty sure the stitching for my bird's eye camera is different with the taller tires on the truck. It would make sense since the angles where they should stitch together are going to be slightly different.

 

[jjswan33]

I'm pretty sure the stitching for my bird's eye camera is different with the taller tires on the truck. It would make sense since the angles where they should stitch together are going to be slightly different.

Well I haven't noticed any ill effects ?‍

I just want my GOM to be slightly closer to reality, I've got thousands of miles with both my camper and my 275/65r20 Nitto's and my truck still thinks it can travel 315 miles or so on a full charge

 

[SoCal Rob]

FYI - just got a call from Rivian to follow up on my request(s) to update the tire size on my truck (went from OE 21” to OE 20”). They twice previously told me they’d do an OTA. This call was to let me know that the previous employee was misinformed - presumably then shot and buried in the back, behind the R2 mock-ups - and that indeed I need to go to the SC to do this.

<sigh>

I asked what the real benefits were, and he said it was tied into multiple systems. Then he said “even gearing” at which point I threw my hands up in the air.

Anyway - OTA tire size change is a no-go. Because apparently they change gearing based on a 1” tire size change. LOL

I suspect that this is so the SC can physically verify the size change and/or use of Rivian wheels. Hopefully Rivian will outgrow this behavior as the company matures since it seems wasteful of their tech resources and owner time.

 

[goldburger]

Well I haven't noticed any ill effects ?‍

I just want my GOM to be slightly closer to reality, I've got thousands of miles with both my camper and my 275/65r20 Nitto's and my truck still thinks it can travel 315 miles or so on a full charge

I changed my 21's for 20's with Nitto AT's in the same diameter and my GOM is still not different on a charge, I just lose miles faster. Still hard to plan any trips. Beene about 1k miles

 

[moosetags]

That's just what Rivian needs to do with the available service hours. They seem to want to do stupid crap instead of fixing trucks with real problems. No wonder the Service Centers are overwhelmed.

Brian

 

[zefram47]

Anyway - OTA tire size change is a no-go. Because apparently they change gearing based on a 1” tire size change. LOL

It's not that they are physically changing gearing in the drive units. The effective gear ratio does change because the 20s are ~34" diameter vs the 21s/22s being ~33" diameter. But that goes directly to the spedo/mileage being off. DarkFx mentioned things like cameras, but it probably goes to stability/traction control/ABS as well. That said, it's still unclear why this can't be done with an OTA or even through the in-vehicle UI like Tesla apparently has.

 

[Electrified Outdoors]

Eventually Rivian will do what Tesla did and allow you to change it in the screen. Sure would save them a lot of service visits.

I would love to see this "gearing change" ?

 

[COdogman]

I want OTA tire rotations.

 

[Si.LE.R1S]

Just seems odd that they can do a fairly significant OTA change in suspension behavior, arguably much more technical than a calibration change for OEM tire/wheels they supply! And the camera cal I just don’t buy - seems like they should have a pretty broad operating range given the changes in ride height.

 

[Dark-Fx]

Just seems odd that they can do a fairly significant OTA change in suspension behavior, arguably much more technical than a calibration change for OEM tire/wheels they supply! And the camera cal I just don’t buy - seems like they should have a pretty broad operating range given the changes in ride height.

The vehicle knows the ride height changes with the suspension changes. It can compensate for those no problem because it's already been programmed to.

There's also no reason they couldn't do correlation for tire rotation counts and gps displacement for determining the tire size, but they aren't.

 

[nfrank]

My guess is that your vehicle will need to go into a "service mode" or something as such to change the tire diameter. Rivian would rather not let you go into a service mode on your own. If we were to be able to change tire diameters ourselves they would need to create a consumer level service mode that doesn't give the random dude enough control to ever break something on their own.

 

[pricedm]

Crazy!

Meanwhile back in my other-brand-starts-with-a-"T" vehicle, every time I do a wheel swap (>10x during the Colorado winter season, all seasons -> snows -> all seasons) I go to the vehicle screen > Service > Wheel size and select from the factory wheel sizes.

For a technology company, this is an easy one to implement. Sigh...

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