well, if the OP asked, “what does a Ninja 250R manual recommend”, then I’d reply, “check your manual” and be done with that. But I thought he wanted more opinions…
He specifically said that his tires are listed as having maximum pressures of 32/36 psi front/rear, but I’ll bet you those are recommended pressures (from somewhere), NOT the max pressure molded on the sidewall of the tires.
I’ve searched model specific forums on different bikes on the subject of tire pressure. For the same bike, people vary their tire pressures from what the manual recommends quite a bit, for whatever their presonal reasons/preferences. The great majority seem to settle on 33/36 (close enough to the 32/36 in the OP, that was the point), so I said it was a middle ground, give or take a few psi. I didn’t say that was the law. The point of all this is to explain that up/down a few psi is within the margin of what people do to suit their own needs, so it’s not a one-size fit all answer some people seem to be thinking.
By the way, my Yamaha does not have stock size fron or rear (now it’s 120/180), and my GS500 has 110/130 tires, my SV650 has 120/160, but I still run 33/36 on them all, and it’s just fine. Could I run 30/33, or 36/39? I could, if I have a specific reason to.