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So we encourage you to join (or start) special-interest and regional-based Rivian clubs at: https://www.rivianforums.com/forum/group-categories/clubs-groups.1/
Having lifted them, they are pretty damn heavy. I put them on Monday & haven't driven a ton, but it does seem like I"m taking an efficiency hit. I don't mind too much as in winter, I'm mostly just driving my kids 7 miles to their ski team and back. We do plan on a trip to Utah and I anticipate caring a hell of a lot more then.
It is a challenging problem to solve. Rivian does have feedback from each wheel in the form of antilock brake pulses which let the braking system know if a wheel is locked up. The problem is the antilock algorithm is designed for maximum braking i.e. if the tire locks up, reduce braking just enough to allow it to continue to rotate and maintain control while still braking hard. In snow/ice, this same algorithm could reduce regen to allow the tire to turn BUT you could still be sliding! So it gets more complex, such as attempting to use accelerometer data to determine actual rate of deceleration vs rotational distance, etc.
I‘m glad it’s not my problem to solve! Until they have a snow mode ready they could probably make people happy just adding “low” and “off” regen options. That might be enough right there. Keep it simple.
I think it's because the new tires have a coating which will take some miles to wear off.Finally got my R5's on and took it for a quick drive. Sport mode and all purpose both spin the tires pretty good, even from 10 mph. I'm going to have to re-learn how to drive on dry pavement.
Or maybe we need a "Dry Pavement Snow Tire Mode"............
Any coating would have been burned off when I smelled rubber after the first launch.
Yeah. I've gone up and down Big Cottonwood Canyon (SLC, UT) at least ten times since Nov 1. All in the 21". No problems yet. Parking lots are full of ice, and I've watched folks slip and fall walking. No traction issues so far. It's snowing right now at my house. I'll update if I experience any issues.
What did they cost you?Finally got my R5's on and took it for a quick drive. Sport mode and all purpose both spin the tires pretty good, even from 10 mph. I'm going to have to re-learn how to drive on dry pavement.
Or maybe we need a "Dry Pavement Snow Tire Mode"............
I am in Huntsville near Snowbasin. Hit the road on my 22s today in the 5-6" that came down. Overall I was impressed with how it fared, especially on acceleration. However, you can tell they are not snow tires. A few turns left me sliding a bit purely based on lack of traction on the tires. Going downhill and having the Regen hit definitely had my heart pumping a few times, as has been stated many other times on other threads. I have been a Jeep guy for the past 10 years and the snow mode is hard to beat. We need something similar on Rivian, even if there are other factors to take into account.
Totally agree about wanting dumb cruise control.*edit: I am new to this forum and the do's/dont's/best practices for replies and topics and feature requests, etc. If you see this and have any advice on how I could have posted better for the forum or in a different method and/or place, please let me know
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AGREE COMPLETELY
I think I was out driving my R1T (20" AT tires) same day/time with this denver recent snow storm , and I have to say I saw a bunch of trucks and other vehicles sliding around - it was especially slippery and icy that day - however, I am starting to get concerned with how high the regenerative breaking is in the snow/ice as it's very easy to want to take your foot off the accelerator when you start to slide, or hit a patch of snow or someone switches lanes in front you, etc - older vehicles you just coast but that sudden applicaiton of breaking in snow or ice conditions is very tricky to get used to! I REALLY wish I could turn off regen breaking on a setting to Lowest possible (much like it is on a full charge when it's reduced) during those conditions. I am really hoping it's a future option with a 'snow mode'
I also do not like the fact that driver and cruise control are pretty much unusable once the camera in the front is covered from snow or fog- I was driving from Denver to boulder in recent blizzard like conditions( bombing snow coming down and against my direction right towards me) and noticed 3 things I did not like: 1) The stock wipers did not work very well , so I upgraded to some heavy duty snow/ice Rain X ones hoping that helps - I could also have not been crushing the defrost as much as I should 2) *** This one was tough, the lights are so bright it felt like I was on a mushroom trip and as if I could see every snowflake coming at me in some sort of starwars lightspeed (see pic attached) action. It was very distracting and I wish there was a way to literally turn down the intensity of the lights - or at least an option to only use fog lights or something - from what I tried there is only 'lights' and 'lights + fog ( front and side) which did not help - a snow mode having better light controls to dim down the brightness a bit or something would be great in these conditions. 3)This could have been user error but seemingly the camera was coverd with snow or fog or ice and driver + was not available, which is fine in those conditions, but, it did not give me the ability to even use cruise control which I really wanted to use on this road and conditions. In an older car you can always use cruise control if you want, and I kept gettting 'adaptive cruise control is unavailable right now ! I should be able to use cruise control whenever I want ,just cruise control.
Would love any feedback on this thread and experience in a response, DM, or a link to another thread covering some of these if anyone has the time !
I just did 1,000 miles with mine and averaged within 0.1 mi/kwh of someone who did basically the same route before me. My navigation range estimates were also just as accurate as they were with the stock 20s. I suspect the range when driving at a roughly constant speed is within the margin of error of any of us being able to tell. I ended up averaging about 1.8ish mi/kwh going between 75 and 85mph. I say ish because I got like 1.85 on the way out, and then forgot to reset my energy consumption before heading back so I had an average of about 1.75 mi/kwh on the way back including two days of driving in town and preconditioning the truck several times.
$387 per tire before tax. Rivian wheels were significantly more than that.
