You're right to check the width. With the mirrors folded (manually) it saves about 10cms per side so 20 cms. Not sure if that helps.
You're right about fat rear end! It measures about 190cms across the rear which then, with mirrors folded, makes it roughly the same width at mirrors and rear.
I reverse mine in and the first time I thought I'd made a mistake with measurements. Because of the rear width, it looks like it won't fit till you get within about a meter and then it starts to open up. All due to angle of the mirrors.
Think yours will be VERY tight with mirrors out but you need them out to reverse in so don't know.
My garage is 2370 wide and now feels plenty wide enough.
I have a target vertical line at the back of the garage that I line up with rear arch as I reverse in.