R2 highway range test with 20" inch A/T tires (Tom from State of Charge)

[rvnxyz001]

BTW, they didn't use AC during this test, I think it is very important

They just turned on went and hearing briefly which used 1kwh

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[Big Kidd]

Tom did a nice job on this video. Really good info to have.

 

[RivianXpress]

I’d like Kyle and tom etc to do a Rivian only road test trip. Compare gen 1 vs gen 2 vs R2 on range and charging speed. Throw in the max pack and other versions with different tire sizes …. Would be great for us Rivian fans!

 

[GaryL]

Watched the video and think he did a good job with the test and explaining all the caveats. What I would like to remind people is this 270 esh number is 100% - 0%. I don’t road trip 100%-0%, depending on the R2 charging curve most likely 80-85 on the top end. For me the bottom depends on the charging reliability score at the destinations, do I need a plan B. Even using 70% of that 270 is going to be sub 200 miles. That’s going to be bare minimum for my next ev purchase

 

[NY_Rob]

And the lower density negatively affects the air/fuel ratio.

It also lowers your max takeoff weight

 

[SwampNut]

I have caught air in the Anza-Borrego desert, which is 260' below sea level, so, can confirm.

 

[Luke42]

FWIW I asked Gemini to analyze the video and reverse engineer the range without crosswinds and the uphill and it gave me 294 miles real world. Gemini said take out the AT tires and it clears 300 miles.

LLMs are naturally bad at math, even though some have some bolt-on software to make their math abilities less bad. It certainly isn’t going to do computational fluid dynamics to answer your question!

What what a tool like ChatGPT or Gemini is going to do is search up a forum thread like this one, summarize the results, and regurgitate our guesses back to you.

Then maybe it’ll use that bolt-on software to make sure it’s not making any obvious math-errors.

That can be insightful, but you need to know that’s what it’s doing in order to interpret the results properly.

 

[Jeremy3292]

LLMs are naturally bad at math, even though some have some bolt-on software to make their math abilities less bad. It certainly isn’t going to do computational fluid dynamics to answer your question!

What what a tool like ChatGPT or Gemini is going to do is search up a forum thread like this, summarize the results, and regurgitate our guesses back to you.

Then maybe it’ll use that bolt-on software to make sure it’s it making any obvious math-errors.

That can be insightful, but you need to know that’s what it’s doing in order to interpret the results properly.

If you know to use AI properly, it works just fine. I didn’t ask it to search these forums or the internet. I gave it the video to watch, and prompted it from there. It’s not hard to do and ask for the math and supporting calcs. Not everyone is a layman when using AI. This isn’t even that hard to figure out the math yourself with the data Tom provided.

 

[SwampNut]

And not everyone uses garbage like ChatGPT or Gemini. If you use paid Grok or Claude, it will write a Python script using Pandas and show it to you, show its work, and let you prompt it to double check itself.

 

[UnsungZero_OldTimeAdMan]

LLMs are naturally bad at math, even though some have some bolt-on software to make their math abilities less bad. It certainly isn’t going to do computational fluid dynamics to answer your question!

What what a tool like ChatGPT or Gemini is going to do is search up a forum thread like this, summarize the results, and regurgitate our guesses back to you.

Then maybe it’ll use that bolt-on software to make sure it’s it making any obvious math-errors.

That can be insightful, but you need to know that’s what it’s doing in order to interpret the results properly.

And if falsehoods are found more frequently, that’s what the bots repeat back to you. Like any tool, dangerous if used improperly.

 

[voxel]

The small usable battery (88 kWh) will also limit the max highway range. 264 miles is a fantastic result. At 80mph the range will be 230 miles with the boxy shape.

 

[rvnxyz001]

The small usable battery (88 kWh) will also limit the max highway range. 264 miles is a fantastic result. At 80mph the range will be 230 miles with the boxy shape.

My guess is the secret is not some magic tire setup or amazing aero. It’s mostly that the dual-motor version can cruise like a RWD EV most of the time, with the front motor disconnected until it needs traction or extra power.

So in normal highway driving, it probably is not paying the usual full-time-AWD penalty. That makes the range make more sense. You’re basically getting close to 2WD efficiency in a boxy SUV, while still having AWD when conditions call for it.

I would like to see numbers when it drives in "real" awd mode , which can be turned on in snow mode

 

[Zorg]

I wonder if they will ever release a max battery that gives a bit more range.

 

[Mos Eisley]

I wonder if they will ever release a max battery that gives a bit more range.

I think it more likely that in the first major refresh in 3-5 years the battery tech will have changed so much they’ll get more range out of less than they do currently. Solid state is not too far beyond the horizon.

 

[tivoboy]

With a 59 mph AVG, the majority of this must have been highway.. seems like the remaining 15 minute of 55 minutes was city.

Colorado springs to Denver, so ~ 2000 ft. Elevation change. But it’s 1400 feet UP and then 2100 feet down. I’d love to See the first part of the curve.

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