Agree entirely, still my choice as well. However, if I knew the EPA ratings for the 20's were pretty close to the 21's, and both well over 300 miles, I could be persuaded to change to the 20's and swap for some LRR road tires elsewhere if I find I don't really care for the AT tires. But, I am guessing the 21's will have significantly more range, and that will make my decision for sure. It's just too bad Rivian had to give us this odd 21 inch size. Why not a road tire on the 20 inch rim? Still no way to know the range on a 20 inch non-OEM road tire...might be similar to the Pirelli AT, hard to know?I keep going back and forth on this between the 21"s and the 20"s. I don't plan on doing too much off-roading (and the ones I do, 4-season tires work fine), plus, I imagine there will be significant range loss with A/T tires. For now, I am leaning towards the 21" and when it is time to replace the tires, I will evaluate what is available in 21" vs a 20" wheel & tire option. I am hoping there will be more options for the 21" by the time I need new tires (I know the Model Y had very limited options when it first started selling and now there are 30 different tires available on Tire Rack but that is a much higher volume car than the Rivian).
What we really need are the EPA ratings for each of the R1 tire options, and CS confirmed today that would be forthcoming, and you guessed it...soon.