Never wear leather while driving a car, never!
The arm holes aren't uncomfortable or anything, they're just tighter than I'm used to with a jacket. Same with the chest area. I don't think I actually have any jackets right now with really high arm holes to be honest, but as I put it on more and more, I definitely am getting a lot more used to it.
It's definitely a bigger purchase, so I just wanted to make sure. I'm definitely going to hang on to the size 48 then I think. Cheers everyone for all of your input!!!
One thing I can say with confidence, definitely don't size up, so good decision.
I obviously don't know how it fits and feels as I am not you, but from your pictures, you can see you have room in the chest and upper clavicle area merging towards shoulders. Your arms are not shrink wrapped in it, you could probably wear a light knit under that, that's how much room I see, so definitely no sizing up, keep that.
You are probably just not used to the slimmer fit and feel of the jacket.