The S60 did not have Model 3 level acceleration
That's true. It had
faster acceleration (than the RWD SR model 3)
5.5 for the S60, and 5.2 for the S60D, versus 5.6 for the RWD SR model 3.
And it was 1000 lbs heavier than the RWD model 3.
So I remain unclear why you think the much lighter Model 3 with AWD would have a problem?
, and had a bigger battery (in theory).
Well, marginally... though an older, and less efficient one. I expect the weight difference would make a lot more difference in acceleration though.
It might be OK. But remember that the smaller the battery, the more durable it must be because it will have to cycle more.
In other words, 8 year warranty concerns might come into play if the charge/discharge rates are higher.
Might. But then again the size difference SR vs LR is a lot less than between that S60 and the biggest Model S battery today, and the S60 guys seem to still be fine.
Not to mention, folks buying the SR probably aren't going to be drag racing the car a ton anyway with high discharge rates- speed demons would've gone for the quicker LR model (or the P if they could afford it)
If I were keeping the car 8 years, I would think the extra $90/m might be good insurance and faster SC charging. And I think I'd get a % of it back on resale.
A percentage? Sure. The rest is money you just set on fire if you don't care about SC rate or the range/0-60 differences.
I personally wouldn't buy one, but I can think of tons of folks who would do so... especially in the northeast where they're likely not driving huge distances often, but might get real-world benefit of AWD (and snow tires) in the winter.