Where I start with 30psi cold in my E46, I'm going down to 28psi cold on my E90 in similar morning temps. That puts me at 38psi cold on street tires.
It was about the same with the conti scrubs and R6s when I used them.
2013 F30 328i Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red