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Understandable. But IMO you're helping to create these slugs unless you're pacing behind another car/semi that is also going to create the slug. I like to radar cruise behind someone else who's only passing semi's.

EPA highway is based on a cycle that isn't steady state. It averages well under 65mph. I like Tom, but he's just guessing in this case. His stated wind impact was limited to less than 2hrs of almost 4hrs of driving. I think he's under-estimating the impact of altitude since he never does them...

Yup. Just reiterating that a lot of the vehement disagreement is based on data that ALL AGREES when variables are properly accounted for. And if anyone wants to use my calculator that matches these data points, please do. (I need to add temperature adjustment. Give me a bit)...

Take off 3% efficiency due to 20" Defenders* vs 22" range wheels/tires and you get 328mi. Or use 20" AT to get 324mi So... Yeah, that ALSO matches. All thse variables can be modeled 😅 *(I saw 1-2% loss going from 21" range to 20" defenders)

Yes (2.95), on the 21" wheels and tires on a good day. And that equates to 265 mi. Guilty of incorrectly reading that you were estimating the R2 at nearly 300mi range. 265mi. Nobody in the real world is going to achieve more than that without hypermiling.

That's why I said never have to enter regen. Vs the 369mi the dyno numbers suggest - also within margin of error. I've been using these to anchor my calculator, so I'm quite confident in it. At sea level, R2 is 265mi on 21" AS and 240mi on 20" AT. I'd bet my R1T on it.

His test had *net zero* elevation and was performed at 5000-7000ft where there's like 15% less air mass. Elevation up/down doesn't impact range or efficiency much so long as you never have to enter regen. I believe his test is damn near best case for level ground at sea level.

Absolutely correct. I want to love Rivian, but business need "tough love" *But it's only once a year. What's a few hours a year?* ;) Gimmie the speeeeeed! I find keeping up with traffic is least stressful. That's typically 65-75mph. Did you come from a suburban or other large truck? I...

I never mentioned 800V. iX3 is MUCH better charging everywhere. I know it's more expensive. Here's R2 compared to cheaper competition on the battery technology front (C-rate / cell stress). The Chevy Bolt is a perfect match. The Trailseeker would probably be competitive if Toyota allowed...

R2 looks like a marginal improvement over 5 year old EVs. IX3 is current gen and actually stands out. https://evbench.pluginpath.com/?tab=chart&r=115%2C97%2C36%2C101%2C119%2C73&v=21&x=soc&y=chargeRate And if we look on a "technological" level (C-rate)...

I think it's actually the Toyota Rav4, Jeep Grand Cherokee, Toyota Land Cruiser, Subaru Forester, etc. As a goof, here's a Rav4 in terms of "C-rate" vs various EVs.

In theory, that's covered by the dynomometer coefficients (except powertrain efficiency). So my calculator takes these coefficients that cover rolling resistance and aerodynamic loads, use the highway test energy consumption to estimate drivetrain efficiency, and then calculates these curves...

Definitely my experience in my R1T that alternating 50-80miles an hour in heavy traffic around Chicago is more efficient than holding 65-70 steady on a rural road.

EPA has dynomometer values that tend to very accurately predict "nice day highway" efficiency and range. Below plots assume *very* light HVAC load. Some summary Efficiency: Range: I think your Model Y numbers are slightly pessimistic, possibly optimistic on R2, but very close to a perfect...

Most tests show over 400kW for less than a minute if you start at like 3%. Saves 30s over a V3.5 "325kW"

Right, and Tesla superchargers are the minority of existing >200kW charging sites. And 800 volt (class) has benefits at the crappy rural chargers that are limited to 200A. Exactly? If you actually care about road tripping as quickly as possible, get a sedan. But more specifically, I am...

It depends on the model. Some are close to 800V, some are barely 600V. Regardless, the only meaningful distinction for this discussion is that they charge more slowly at Tesla superchargers. Even the 600V batteries charge better from 50-80% than most other EVs. Why is range added not useful...

I have a lot to say, but for now, I will just leave this: The broader IEC 62196 family has moved well past 400A. IEC 62196-1 (both the 2022 and 2025 editions) specifies up to 1500V DC at 800A. Look in the history section: https://en.wikipedia.org/wiki/IEC_62196 Additionally, liquid cooling is...

Haha, the entire thread is irrelevant to that use case. You'll be fine. For people who don't have home charging, or spend most of their time on the road, I don't recommend an EV. But if they choose to have one anyway, the R2 is in line with the competition.

Absolutely agree. Yes, 200kW flat to 80% would give a 10-80% in 18 minutes. Not China fast, but would be right there amongst the best in the US. All the current gen 500A and 600A equipment should be able to sustain it. HYC400s are used in Europe to charge 300-500kWh trucks that just hold...