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Pretty interesting article:
tfltruck.com
Corresponding video expands on things a bit more than the article, but also can’t be skimmed:
Summary: a Rivian employee and their spouse drove a Rivian R1T 2500 miles one-way (so 5000 miles round trip) while towing a roughly 6000 pound load (combination of aluminum car trailer and a Mustang on it). The couple provided a scale ticket showing the entire rig, with them and their luggage in the truck, weighed over 14,000 pounds. TFL estimates they got roughly 100 miles per charge, running the battery between 16% and 80% which maximizes charging speed.
Charge time was variable because the chargers put out varying amounts of current. No numbers are provided for how long charge times were.
As a comparison to TFL’s previous pure electric towing test when they tried to tow a small (2000 pound) overland trailer to Oregon, they got 100 miles per charge with a Tesla Model X. So the R1T did significantly better given it was towing 3x the weight. It would be interesting to see what it’s range would be with a 2000 pound trailer instead for a more direct comparison.

Rivian R1T Tows a Sports Car Cross-Country, Stops at Every Walmart
Images via: @gideontherivian on Instagram A couple uses their new Rivian R1T to tow their Ford Mustang across the county and back - here is their story. Most

Corresponding video expands on things a bit more than the article, but also can’t be skimmed:
Summary: a Rivian employee and their spouse drove a Rivian R1T 2500 miles one-way (so 5000 miles round trip) while towing a roughly 6000 pound load (combination of aluminum car trailer and a Mustang on it). The couple provided a scale ticket showing the entire rig, with them and their luggage in the truck, weighed over 14,000 pounds. TFL estimates they got roughly 100 miles per charge, running the battery between 16% and 80% which maximizes charging speed.
Charge time was variable because the chargers put out varying amounts of current. No numbers are provided for how long charge times were.
As a comparison to TFL’s previous pure electric towing test when they tried to tow a small (2000 pound) overland trailer to Oregon, they got 100 miles per charge with a Tesla Model X. So the R1T did significantly better given it was towing 3x the weight. It would be interesting to see what it’s range would be with a 2000 pound trailer instead for a more direct comparison.