70 mph Range Test - Tri / Max / Defenders / Conserve = 335 miles

[TexasBob]

So I did the 70 mph range test on conserve this morning. I ran from 100% down to 2% and got 324 miles => 330 miles. Adding in the buffer the total range is ~335.

• Michelin Defender tires on the Dune 275/60/R20s
• Max Pack
• On Conserve mode
• Efficiency 2.43 mi / kwh
• Temps ranged 55 - 73 degrees during the drive
• Elevation 50ft - 150ft
• Ran 2x separate speedometer apps to validate speed 71 mph on Rivian = 70 on both apps

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[TexasBob]

One other note, the speedometer apps validated the odometer switching to the 33" diameter wheels from the 34" pirellis. So that works great.

Also stating the obvious but the 2.43 mi per kwh x 141 kwh max pack = 343 miles. If I had actually run to zero it might have gotten the extra 8 miles. Would not surprise me. My key take-away is that the in-vehicle mi/kwh looks to be very accurate and a 100 mile test run will give you good data x 141 pack size.

I am going to run my 88 mile loop on all-purpose next weekend just to see how much difference there is at steady freeway speeds. I expect not much.

 

[Donald Stanfield]

Not too bad on the 20's

 

[ne0phyte]

you the man! this was literally what I was searching for on this forum for a long time, so many thanks to you.

looks like the tri-max on all season 20's is similar to what a gen1 dual motor R1S on 21 all seasons gets. the efficiency gains from the gen2 platform got neutralized by the 3rd motor

i think the outofspec test on that R1S gen1 DM was 346miles. I also average about 2.4-2.6 on road trips going between 70-74mph (i also have a gen1 DM on all seasons), so i think your result is pretty valid

 

[Pacernow]

TexasBob,
Thank you for doing this test. Great information for a potential buyer. Efficiency of the vehicle is one of my hot buttons.

 

[portdirect]

you the man! this was literally what I was searching for on this forum for a long time, so many thanks to you.

looks like the tri-max on all season 20's is similar to what a gen1 dual motor R1S on 21 all seasons gets. the efficiency gains from the gen2 platform got neutralized by the 3rd motor

i think the outofspec test on that R1S gen1 DM was 346miles. I also average about 2.4-2.6 on road trips going between 70-74mph (i also have a gen1 DM on all seasons), so i think your result is pretty valid

When running on conserve a tri is the same as a dual motor when at a steady speed: only the front drive unit is running and it’s the same between gen1 and 2 for virtually all meaningful aspects.

 

[C.R. Rivian]

So I did the 70 mph range test on conserve this morning. I ran from 100% down to 2% and got 324 miles => 330 miles. Adding in the buffer the total range is ~335.

• Michelin Defender tires on the Dune 275/60/R20s
• Max Pack
• On Conserve mode
• Efficiency 2.43 mi / kwh
• Temps ranged 55 - 73 degrees during the drive
• Elevation 50ft - 150ft
• Ran 2x separate speedometer apps to validate speed 71 mph on Rivian = 70 on both apps

Conserve mode, at least in my 2022 R1T Quad, uses only front wheel drive and, according to many posts here, results in really strong tire wear. I have used it a couple of times on longer trips on the freeway, but mostly stick with all-purpose. Does 2nd gen conserve do something different than front wheel drive?

 

[portdirect]

Conserve mode, at least in my 2022 R1T Quad, uses only front wheel drive and, according to many posts here, results in really strong tire wear. I have used it a couple of times on longer trips on the freeway, but mostly stick with all-purpose. Does 2nd gen conserve do something different than front wheel drive?

It basically behaves the same as all purpose mode on the duals. So the disconnect still happens, but it only occurs after around 20 mph and the rears will dynamically reconnect during sufficient acceleration. The end result being that tire wear should not be an issue as a result of being fwd *only*. You can also run in medium height on the tri motor when in conserve, rather than just low and lowest - so can factor that out as well if desired.

 

[Joules Burn]

Reminds me of Kramer and the Volvo...

https://en.wikipedia.org/wiki/The_D...ship" is the 167th,of the NBC sitcom Seinfeld.

 

[PaythePiper]

Doing my first legit road trip tomorrow Phx -> San Diego. Dual max pack on 20 ATs. I like to live around 70-75 mph. I do some elevation climbing after El Centro, so curious how my effiency will do. Charging desert after El Centro so my max pack should do me right.

 

[RivianG2R1S2024]

Why can’t they increase the Max Pack to 175-200kw right now?

 

[an-thu-knee]

Another thing - your trip meter photo looks like it's at the end of your trip, and your tires show 48-49psi, and I would assume they were still warm from all the driving. That means your cold tire pressure was lower than 48psi. I typically run 49psi cold. Try that and you might get another little bump in efficiency.

 

[R1Thor]

Why can’t they increase the Max Pack to 175-200kw right now?

Cost.
Tooling.
Physics.

If you add more weight to a battery pack, you simultaneously reduce efficiency. It's a bell curve. There's a theoretical point where the pack gets so heavy it's so much less efficient, you not only reduce efficiency, you'll get worse maximum range.

It's a balance.

Really, it's all about the waiting game.

As battery tech evolves, cost per kilowatt hour and killowatts per pound will drop. Today is not that day. Though we can make some of those batteries in a laboratory, we haven't (yet) figured out how to manufacture them at volume (and verily: whether it's practical at this point with the current technology). There's a similar Engineering optimization curve where it's risky to start manufacturing the next gen tech if your competition may be working on the tech that's going to make your competitive tech obsolete. Let the industry have its natural evolution, and we'll all be better for it.

 

[Golfer04]

This. IMO, once you can consistently get 300 plus miles on a full charge improving battery technology around DCFC speeds is the bigger issue. I don't mind stopping every four hrs to refuel, but don't want to be there 40-60 minutes refueling to 100 percent.

 

[LL75]

Why can’t they increase the Max Pack to 175-200kw right now?

HummerEV comes with 170 or 247 kwh pack, but it only get 311 miles and 381 respectively. That sucker weighted 2K lbs more than the Rivians.

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