Just for interest's sake, here are the Nike Air Citius +2 MSL vs. the Nike Air Citius +3 MSL ...

Note that (accounting for obvious wear), the soles appear to be identical. The variation in whiteness I would guess is because the old +2s have been soaked in muddy water quite a bit.

Anyway, we'll see how they go.

"You sure wore down your old pair!"

That's the better of the two shoes. This is the other one:-

"How many miles did you put on those things?"

Around 18-22 miles a week; nothing ridiculous. Still works out at around 560 miles over slightly more than six months though.

"Usually I'm replacing shoes well before the tread gets worn down that far, since I can feel in my ankles, calves, and knees that the midsole isn't doing its job anymore."

Well, the weird thing is that I've had very little pain in my feet or joints recently- less than most of my other shoes even when they're relatively new. But yeah, my shoes are normally due for replacement around the 5 month mark, though it's typically closer to six by the time I actually replace them.

Those ones are starting to feel a little thin now though, but they've still been surprisingly forgiving. My new pair feels more rigid, but that's probably because they're new, and ironically, they're slightly less comfortable at the front- but my previous pair were like that when they were new too. So yeah...!

"Good luck with the new (and improved?) kicks!"

Yeah, I hope so, cheers