100% agree! And in a heavier truck with a lower center of gravity that is fun to drive, ripping around corners will also create wear. Guilty as charged, and good timing. I just swapped out my summer Pirelli AT's for Nokian winter tires today.
There are also 2 other things that can have an impact on tire wear over time in my truck, but they can be managed quite easily with some basic awareness for what happens in different settings:
1. The first that can have an impact is driving in what Rivian calls, "
Conserve Mode". When in Conserve Mode, the truck disengages the 2 rear motors and runs only the 2 front motors on the 2 front wheels. This is an excellent setting for cruising, long, straight HWY runs. However, some owners (probably the same ones that don't really understand settings, drive modes, and how they work) just leave Conserve Mode "ON" in their truck all the time (like driving around town) thinking that they are getting the greatest efficiency ever, when in fact they may be burning through rubber! When driving around town in Conserve Mode, performance is not as good as "All Purpose Mode" using all 4 motors, and there is much more pressure on the inside corners of the two front tires - the ones doing all the work.
2. The second factor is
ride height. Conserve mode (for example) can also be combined with a lowered ride height (the truck has adjustable air suspension) to slightly further reduce energy consumption, but this places the truck into a lowered stance, which moves a completely flat tire into a slightly more toe-in prone position. With Conserve Mode "ON" and the ride height set to the lowest possible setting, there is going to be more pressure on the inside corners of all 4 tires (when squatting the truck). If you couple that with driving like a chowder-head, you are going to see more wear. Conversely, if you ride around all the time on a higher ride height setting, the stance of the truck changes again, and you will see more toe-out wear on the tires, when constantly riding in a lifted position. The key is using the right settings for the right driving conditions and not being lazy. Generally speaking for daily driving in the R1T, "All-Purpose" mode, at standard ride height, is the way to go.
With AT tires (and a full-sized spare on the R1T,) I do a 5-wheel tire rotation every 7500 miles and that seems to be just about right. I have had a very solid run on my AT's (I have ~40K on my truck) but I also run winter tires for 4-5 months a year, as mentioned. I will probably buy my first new set of AT tires next summer I'm guessing, and I do sometimes drive around like a chowder head (a lot less now that I have owned the truck for 2 and half years).
Lastly, and if you live in snow country, I am a strong believer in having 2 sets of very good tires (as opposed to 1 middling set). Since tires will eventually wear-out, I would much rather pay for 2 sets in advance, have both sets longer, and enjoy better tires for winter driving and better tires for summer. Mediocre all-season tires don't seem to do anything well. I run about 4 or 5 months on these snows, then switch back to the AT's (also helps with the needed rotations):
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