Ok so some like mud flaps for practicality, some prefer the look without them. I'm the second one. When I removed the rear mud flaps I seen that they had been fitted by someone with hooves for hands who needed to drill a 15mm hole to accept a 6mm bolt but there you go. I was going to try to fit dummy parking sensors to hide them..... Anyone else done this or (barr changing bumper or refitting mud flaps) came up with a better solution

Google 15mm rubber grommet

100% what RRV8SC says. Buy some 15 - 20mm blind (closed) rubber grommets, drill the hole to the right size, and pop in the grommet. Job done. It'll look neat and tidy, and will be quickly forgotten about. I wouldn't even bother painting them. No one but you will care. V8 or else ...

I would cover those ugly holes up with……..

Some nice, shiny new Mud Flaps!

At the end of the day, it’s just your preference, holes or flaps…..  V6 Vogue - “Less is More” - less to go wrong!