Continual suspension/alignment issues

[electruck]

Will try out some different variables but the talk track from the SC was that higher regen = more pull because of the lack of a LSD on the front motor.

North DFW, Plano/Frisco/Propser area

I don't really buy that explanation. Per the standard definition of an open differential, an open diff will provide equal torque to both wheels assuming equal traction, with the limit being set by the wheel with least traction in an unequal traction scenario. If Rivian's open diff were somehow applying more regen torque to a given wheel, I would then expect Rivian's stability control to apply the physical brake as necessary to maintain the intended direction of travel. And weren't you also having problems with tracking straight at constant speed when regen would not even be a factor?

Another experiment you might try is braking with regen brake assist both enabled and disabled to see if you notice any difference.

During any of your service visits, was the brake system examined? are you experiencing even brake pad wear over both inner/outer and across left/right sides?

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[TXChips]

I don't really buy that explanation. Per the standard definition of an open differential, an open diff will provide equal torque to both wheels assuming equal traction, with the limit being set by the wheel with least traction in an unequal traction scenario. If Rivian's open diff were somehow applying more regen torque to a given wheel, I would then expect Rivian's stability control to apply the physical brake as necessary to maintain the intended direction of travel. And weren't you also having problems with tracking straight at constant speed when regen would not even be a factor?

Another experiment you might try is braking with regen brake assist both enabled and disabled to see if you notice any difference.

During any of your service visits, was the brake system examined? are you experiencing even brake pad wear over both inner/outer and across left/right sides?

I'll do some more experimenting with modes and get back to you but I am relatively confident it is tied to regen, or at least regen level. The pull to the right intensifies when regen braking, and the SC itself said that higher regen will create more pull. Re-posting what the SC explained it as;

"The secondary concern on drifting, particularly while slowing utilizing regeneration is additionally a normal operation, especially in the high regeneration setting. This is due to the motor inside the drive unit generating friction. The drive unit does not have a limited slip differential, so at slow speeds this build up of friction results in an exaggeration in feedback based on road surface/conditions. IE, when pulling up to a stop light in high regenerative mode, you will feel the crown of the road, allowing movement to the right. When test driving under the same conditions you presented, there is movement to the right based on the road surface. When regeneration is moved to the lowest setting, the exaggeration of movement diminishes due to less friction."

I can see how neutral does in comparison, but obviously not a fix for the pull...

The vehicle is only at 1700 miles so I don't believe they inspected brakes for wear. I was told the vehicle was fully inspected and re-checked but was not given a readout, given they told me they successfully balanced all 4 wheels and then proceeded to replace all 4 tires due to not being able to balance them, I can't vouch for the quality of their checks...

 

[SoCal72]

Hi, I'm glad I found this thread, though sad that so many others are dealing with the same thing. Mine pulled to the left (drivers side) when accelerating and they've aligned it 4 times now and then it goes to the right, then left, then right and now left when slowing down with regeneration. I do not have high regen on bc I was told this is part of the reason my tires are down to 3mm at about 8500 miles. I would really appreciate any solutions to this, even if it is going and getting it paid on my own. Someone mentioned subframe issues. Is this still an issue with Gen 2s? @TXChips , if the regional person is able to help, can you share what the help was. I've dealt with this from day one.

 

[Vik]

My 2025 Gen 2 R1S Perf Dual Max with 22" Sport Darks had this issue on delivery last year in September. When driving on the highway, the car would pull hard to the right when accelerating and regening in All-Purpose (FWD mode). In Sport (4WD), this is less pronounced. I had them do an alignment immediately and it did not fix the issue.

I eventually rode with a tech to demonstrate the issue and drove another 2025 R1S Dual motor that did not have the issue so I knew there was something wrong with my car. They did a second alignment and replaced a tire that was supposedly defective and it was good.

Fast forward to this month and 8000 miles later, I had mobile service rotate the wheels as they recommend and the issue has resurfaced. The rotation was moving the front wheels backwards and crossing the rear wheels to the front. My guess is the tires are the culprit, but I will find out after my next service appointment in October.

 

[rogersmj]

My 2025 Gen 2 R1S Perf Dual Max with 22" Sport Darks had this issue on delivery last year in September. When driving on the highway, the car would pull hard to the right when accelerating and regening in All-Purpose (FWD mode). In Sport (4WD), this is less pronounced. I had them do an alignment immediately and it did not fix the issue.

I eventually rode with a tech to demonstrate the issue and drove another 2025 R1S Dual motor that did not have the issue so I knew there was something wrong with my car. They did a second alignment and replaced a tire that was supposedly defective and it was good.

Fast forward to this month and 8000 miles later, I had mobile service rotate the wheels as they recommend and the issue has resurfaced. The rotation was moving the front wheels backwards and crossing the rear wheels to the front. My guess is the tires are the culprit, but I will find out after my next service appointment in October.

@Vik , what's the latest with your saga with this pulling? My '25 Dual Max that I recently purchased is also pulling to the right under hard acceleration. I don't have a service center near me (yet...opening in a couple of months) so it's not easy for me to have Rivian troubleshoot it.

 

[mmbmca]

@TXChips see my thread it was Gen 1 the fix was replaced sub frame with Gen2. In assuming yours is Gen 2. Take a look at my alignment printout in the post, one of the fixes also is negative caster on the left and positive on the right.
@rogersmj & @TXChips make sure you report it again and again and have them address it.
I did get a 2026 Gen 2 R1S as well they made the alignment worse but fixing it

 

[superfly_snook]

I do not have high regen on bc I was told this is part of the reason my tires are down to 3mm at about 8500 miles.

I have used high regen for two and a half years with no acceleration of tire wear - still on OEM ATs at 27K miles and should get 30K out of them. Seems about right to me. Clearly something is wrong with your truck I would keep at it with service until they fix it.

 

[SoCal72]

Hi, I had to replace my tires at less than 9000 miles, given the explanation of the high region, had alignment done multiple times. I finally got new tires, and it is so so so so much better. I think the Pirellis were bad?

 

[Vik]

@Vik , what's the latest with your saga with this pulling? My '25 Dual Max that I recently purchased is also pulling to the right under hard acceleration. I don't have a service center near me (yet...opening in a couple of months) so it's not easy for me to have Rivian troubleshoot it.

A quick recap -

• I have a 2025 R1s Dual Motor Performance Max Pack. On delivery in September of 2024, I had a strong pulling to the right when low-moderately accelerating and decelerating.
• This required two visits, two alignments, and replacement of the two front Pirelli Scorpion MS tires to fix the issue. Car drove fine after this was done.

Fast forward to September 2025 -

• I had the wheels rotated and they put the rear OEM factory tires on the front and the September 2024 replaced Pirelli tires on the rear.
• Immediately the pulling to the right issue resurfaced and I scheduled the appointment.
• Rivian confirmed the pulling issue on a tech ride along and swapped the front wheels (pulling changed to the left side). However, they refused to replace the original OEM Pirelli tires.
• They directed me to Pirelli and their warranty process which is a nightmare.
• Pirelli says they don't deal directly with customers (convenient) and to take it to Discount Tire.
• Discount Tire said I need all new tires (of course) and that Pirelli requires them to send my tires into them and they will be destroyed.
• The 22" tire options are terrible and I didn't want to throw down $2,800 for new Pirelli's. So I found a lightly used set of Pirelli Scorpion MS tires on Facebook for cheap and had Discount swap them out.

Car drives fine now and I don't really feel the pulling issue. Under hard acceleration the car still feels a little unstable, but I think that is torque steer from the Dual Motor. For now, I am leaving it and hopefully it won't resurface on the next rotation.

 

[wak9999]

Just adding another datapoint to this discussion. I have a 2026 R1S Dual Max. It pulled to the right on delivery. Realignment did not fix it. Rivian replaced all 4 tires which didn’t fix it. Rivian replaced all 4 wheels and realigned it again. It improved but now just 2000 miles later it is worse again. I am hoping that someone at Rivian is paying attention to what appears to be a fairly common problem and can contribute some helpful information. I had a Gen 1 R1S that did not have this problem. I love the Gen 2 but this (and multiple other problems) is quite frustrating.

 

[mmbmca]

No one is paying attention, keep persistent with the service requests to make sure they fix it or give you a replacement. I had to report alignment 6 times over 16 months to get them to replace the front Subframe on my Gen
1 and I think it's drifting again. Will push for a replacement if it doesn't track straight.

 

[wak9999]

Another alignment done but unfortunately no improvement. I have asked service if they have any new ideas.

 

[mmbmca]

Another alignment done but unfortunately no improvement. I have asked service if they have any new ideas.

Make sure you put in another ticket and escalate

 

[wak9999]

Already done. They seem to have no idea about what to do next.

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