2025 Model Year R1S Testing

2025 Rivian R1T/R1S Leaked Certification: Enhanced Efficiency and New Features

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The Application for Certification for the 2025 Model Year Rivian R1T and R1S has leaked.

Here’s what I’ve gathered from reading the document relating to the upcoming R1 refresh:

  • 21″ wheels are not mentioned, most likely retired
  • Standard battery pack is now LFP (lithium iron phosphate)
  • New 22″ aero wheels are being introduced
  • A new base trim was mentioned
  • Heat pump confirmed
  • Relocated compressor reduced noise, vibration, and harshness
  • CCS inlet confirmed (no NACS port at this time)
  • Increased efficiency
  • Fast charging 210 kW (standard LFP battery)

Additionally, Rivian is running these tests with a new 20″ tire size. The current tire size is 275/65R20 but the new one seems to be 275/60R20 which means the wheel 33″ instead of the current 34″. This should definitely help with efficiency.

275/65R20 Vs. 275/60R20 Tire Compare Chart

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