I have the above rim/wheelset together with a Carbonda 505SL frame. The tire clearance of the frameset is max 42 mm.

I'm looking for new gravel tires. Currently I'm running Specialized G-ONE RS Pro in 35 mm. With an upcoming gravel event combined with a bikepacking trip around the South of Norway, I'm looking for more comfort by going for a fatter version preferably the R Pro. 40mm wide would be no problem for the frame I guess. But would a 45mmm fit? How wide actually is it on that rim?
Do you have the above XMCarbonSpeed D30CU wheelset and one of the tires mentioned above (being RS/R or RX), would you mind by measuring the actual width of the tire on that rim? You would really help me decide. Thank you!