Wheel spacers
 

Considering getting some 30mm wheel spacers to space out the rear wheels out to the edge of the arches.

What are people's thoughts on this?

Will it affect the handling?

Goes without saying I would use the proper ones that you bolt to the hub and then bolt the wheel to the spacer.

Had a bad experience with the same style bought from a reputable company but had two studs sheer they replaced them with no quibble but now I live with the wheels in a bit
If you do go that route then torque the wheel nuts and check the studs for any stretch marks routinely