[cmiovino]

I remember with my 2004 WRX, when I did the radiator as precautionary maintenance around 125k (they're well known to split at the end tanks past this interval) I did the hoses too. This was in 2016, so the hoses had 12 years and 125k on them.

I think it really depends on the hose and even construction in 2004 vs probably 10 years later. Generally speaking, I'd inspect them visually. Mine were looking kinda ratty and old. If yours looks ok and are pliable, I'd just run them. Maybe if you're doing a coolant change and really want to change them, do it then - because you don't want to be doing a coolant change to last the next 60k+ and have to redo it all again to replace the hoses in 2 years/20k.

There are other hoses, but many less than a WRX. I know on that car all the ones around the turbo were well cooked, hard, and literally breaking if you pushed on them at 125k and 12 years. I replaced all of them, but the BRZ doesn't have that.

Absolutely do check and replace your PCV valve and even associated lines/hoses that usually come with the OEM PCV valve part number. People always forget this even exists. Should be really changed every 30k and speaking of which, mine is due now that it's at 40k.