Is this enough space on my rear wheels? 18” wheels

the pictures are deceiving,they almost appear to only have a few hairs of clearance but in general I would say that 1/2inch is enough if that is what you see
I would suggest to take it slow, maybe drive around the neighborhood and hit a few speed bumps and dips and take it straight home and inspect again for any signs of rubbing, then continue to step it up to freeway speeds doing the same process