Rivian answered these questions on R1T & R1S specs.
What is the maximum approach angle?
Depending on Depending on your suspension settings and configuration, the maximum approach angle in the R1T is 34°, and the R1S is 34.3°.
What is the maximum breakover angle?
Depending on your suspension settings and configuration, the maximum breakover angle in the R1T is 25.7°, and the R1S is 28.9°.
What is the maximum departure angle?
Depending on your suspension settings and configuration, the maximum departure angle in the R1T is 29.3°, and the R1S is 33.7°.
What's the storage capacity in the front trunk?
The storage capacity of the front trunk of the R1T and the R1S is 11 cu ft.
What is the bumper to bumper length?
Depending on your configuration, the bumper to bumper length of the R1T is 218 inches, and the R1S is 202 inches.
What is the maximum towing capacity?
Depending on your configuration, the R1T can tow up to 11,000 lbs, and the R1S can tow up to 7,700 lbs.
What is the maximum ground clearance?
Depending on your suspension settings and wheel configuration, the maximum ground clearance of the R1T and the R1S is 14.4 inches.
What is the water fording height?
Depending on your suspension settings and wheel size, the maximum water fording height of the R1T and the R1S is 42.7 inches.
What is the rear bin storage capacity in the R1S?
The rear bin storage capacity in the R1S is 5 cu ft.
What is the storage volume of the gear tunnel in the R1T?
The gear tunnel has 11.9 cu ft of storage including the door compartments.
What is the vehicle wheelbase length?
The length of the wheelbase of the R1T is 135 inches, and R1S is 121 inches.
What is the vehicle width with the side mirrors folded?
The width of the R1T and the R1S is 81 inches with the side mirrors folded.
How quickly can you accelerate from 0-60 mph?
Depending on your configuration, the R1T and the R1S can accelerate from 0-60 mph in as quick as 3 seconds.