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r/electricvehicles · u/tech01xAug 1, 2026, 5:29 PM

70 MPH Highway Range Test in my Rivian R2 (All Terrain Tires) - What Happened?

111

Comments

u/tech01x1Aug 1, 2026, 5:34 PM
Another data point: 222.7 miles to 1% left with 20" AT tires, 75 degrees F, cliimate set to 72 degrees, even elevation, and did downpour at the every end. Note that with this configuration, the EPA (Rivian provided) range is 307 miles. The highway range is 276 miles. Call it 230 miles of range in ideal conditions Correcting for that, got 2.7 miles per kWh, or 370 Wh/mile. That's 25% off the EPA combined range, and 17% off the EPA highway range. Note that Rivian chooses the correction coefficients, which it then self certifies the results that are then submitted to the EPA. Some people think that the EPA does their own tests (which does happen, but not regularly).
- u/damnmykarma1Aug 1, 2026, 5:44 PM
  That’s pretty bad. Are these aftermarket ATs?
- u/Pitiful-Voyage1Aug 1, 2026, 5:45 PM
  That's insane!! 184 miles is arguably the most meaningful stat and that could drop another 20% in freezing temperatures. Objectively speaking this is a poor showing from Rivian. How were the charge times? 30 min for 400V isn't awful but not great either.
- u/Slavik811Aug 1, 2026, 6:09 PM
  For reference, the EPA highway test procedure has an average speed of 48 mph and a top speed of 60 mph. https://www.fueleconomy.gov/feg/fe_test_schedules.shtml
  - u/Teutonic-Tonic1Aug 1, 2026, 6:15 PM1 reply
- u/Icelock1Aug 1, 2026, 6:16 PM
  YIKES! My lightning is able to travel farther and it's an even worse brick shape. (Yes I know I has a larger battery)
  - u/Pitiful-Voyage1Aug 1, 2026, 6:33 PM
- u/Petrol_Head721Aug 1, 2026, 6:55 PM
  For the laywo/man that has purchase consideration for a 300+ mile vehicle, this will absolutely dissuade some.
u/lightofhonor1Aug 1, 2026, 5:44 PM
All terrain tires are generally terrible for range. Not exactly surprising.
- u/Pitiful-Voyage1Aug 1, 2026, 5:48 PM
  This car has insanely good looks but absolutely terrible aero and the tires have a much lower effect on range compared to the drag at any meaningful speed. Yes, there is a small change due to the tires but you won't get that much back by going to lower rolling resistance. You'd have to streamline the aerodynamics.
  - u/bpetersonlaw1Aug 1, 2026, 5:56 PM
  - u/tech01x1Aug 1, 2026, 6:36 PM1 reply
- u/feurie1Aug 1, 2026, 6:05 PM
  That’s already accounted for. These are a stock option with an EPA rating.
u/Pitiful-Voyage1Aug 1, 2026, 5:55 PM
I think the biggest elephant in the room is the "affordable" $45k RWD stripped down variant with 270 nominal miles of range. If we apply the same reduction (25%) then the 0-100 is just ovrt 200 miles. 80% of that will be 162 miles (!!!) and again this is in good weather. If we talk freezing temperatures we could expect something like 130 miles for 80% of the battery which is approaching old Leaf numbers. I get there are a lot of apologists but this is absolutely terrible. It further reaffirms the narrative that EVs "don't go very far". They do, the well-designed ones anyway where R&D goes towards helping eliminate that bogus claim. Look at Merc, BMW, Volvo, Lucid. They also happen to be on much more efficient charging 800V architecture. This is a major fumble by Rivian and they need to address this as the OoS and SoC videos have now gotten a good number of views.
- u/goofyskatelb11Aug 1, 2026, 6:20 PM
  I’ve heard in a few interviews and stuff that Rivian sacrificed 800v/charging speed to maximize battery capacity and range. If this is what it looks like to prioritize range, yikes.
  - u/Pitiful-Voyage1Aug 1, 2026, 6:38 PM
- u/Teutonic-Tonic1Aug 1, 2026, 6:22 PM
  I’m not a Rivian apologist but most of your “well designed” examples are more Aero in shape and loose around 15% of their range at 70 mph as the EPA test has a 48mph average speed. The Rivian is boxy and brick shaped and is losing 25% which isn’t shocking. The All Terrain tires will also contribute to the drop off at higher speeds.
- u/EjicaltecmstnV1Aug 1, 2026, 6:22 PM
  Just chiming in to say that in terms of efficiency/value my equinox ev has listed 312mile range and that’s been been tested to be a rather good estimate by folks outside of myself. So it doesn’t even take a luxury vehicle at $50k+ to reach better figures in an “suv” type vehicle. I use “suv” only because the equinox is by no means meant to be or compete with an offroad mid size vehicle.
  - u/Pitiful-Voyage1Aug 1, 2026, 6:29 PM
u/speedy-721Aug 1, 2026, 5:58 PM
WGAF what highway range they get on AT tires? Shit maybe next you can put triangular wheels on and see how that does on the freeway 🤦
- u/Pitiful-Voyage1Aug 1, 2026, 6:02 PM
  The car has terrible aero. You might claw back 10-15 miles maybe but the drag is very high. They also didn't exactly have breakthroughs with efficiency in their motor drivetrain or thermals. Even with the tires this is a major fumble. An adventure vehicle that doesn't have enough miles to go on an adventure.
- u/tech01x1Aug 1, 2026, 6:39 PM
  This is a standard Rivian supplied configuration.
  - u/Teutonic-Tonic1Aug 1, 2026, 6:44 PM
u/Fun_Intern_75391Aug 1, 2026, 5:58 PM
rivians are just in desperate mode and just doing misleading marketing
- u/Pitiful-Voyage1Aug 1, 2026, 6:05 PM
  RJ himself stated that they "matched" the MY efficiency! Considering this car is $64k OTD right now this is BAD. The specs are from sometime in 2018.
u/reckoning421Aug 1, 2026, 6:02 PM
I think these tests would be more valuable with a second vehicle side by side with oem highway/street wheels and tires so people could be more informed when choosing configurations, and to perhaps defray the notion that all trims have similar efficiency concerns.
u/auronedge1Aug 1, 2026, 6:07 PM
isn't this test useless if it rains?
u/QuietReal1971Aug 1, 2026, 6:10 PM
So elevation, and no wind speed data. Seems about right. Why so mad?
u/Scratch_Disastrous1Aug 1, 2026, 6:17 PM
Man, I've been so excited for this vehicle. But I just can't get past these range tests. I understand all of the arguments regarding why it shouldn't matter that much to most people. But to me it does on many levels. Here's what's going through my mind, and I don't expect people to agree (this is therapy more than anything else!): 1) I do weekend road trips in the winter and my MME just barely makes the trip on the coldest days. The R2 is showing worse highway range in these tests than I can get with my 2022 MME. It's just a bummer to be thinking about spending $60k on a beautiful and high performing vehicle that has this dated range. 2) I feel like this vehicle isn't as great a bargain as I had been expecting. The difference in actual vs advertised range may not be an important factor for many people's day-to-day lives, but the reality to me is that this range difference is worth several thousand dollars in the way that EV's are typically priced. I'm sure people will disagree, that's fine, but the battery pack (and range) is one of the biggest price factors in EV's. 3) I'm really turned off by how Rivian seems to be acting like Tesla used to do by gaming the EPA tests and then misleading everyone with the way they talk about the R2's efficiency and advertise its range. Was RJ just lying through his teeth about the R2 being as efficient as the MY, or is there something wrong with all of these tests? So far the data seems to suggest that it's not even close at any speed.
u/mojo2761Aug 1, 2026, 6:19 PM
Other then the one comparing it to a model y, are there other videos that have done these same sort of tests with other similarly sized EVs?
- u/tech01x1Aug 1, 2026, 6:38 PM
  Many folks have 70 mph drive to dead or almost dead videos, so once the weather is accounted for, can be directly compared. The ones that cannot be compared are the likes of Car and Driver or Edmund’s where they take a small loop and then try it extrapolate range, and those that don’t give the testing conditions.
u/tiny_lemon1Aug 1, 2026, 6:35 PM
Car & Driver:

"Cruising on the highway at 75 mph, the R2 Performance with the 21-inch wheels (not the 20s pictured) traveled 260 miles on a charge. The 21s come standard with an all-season tire..."

Interesting range spread. Tires are often the biggest variance beyond obvious test condition deltas.
- u/tech01x1Aug 1, 2026, 6:41 PM
  Car and Driver did a small loop and then extrapolated range. They didn’t do a full range test. Tim at InsideEVs also did a full drive to dead range test and basically got what OOSR got, so C&D is the outlier. I expect Edmunds to do a terrible job as usual too.
  - u/tiny_lemon1Aug 1, 2026, 6:44 PM1 reply