Red Wheel liners

I have s set that need to be cleaned. They have been under coated I used oven cleaner to get most of it off and it doesn’t seem to hurt the plastic

Looks like you have a convertible. The rear liners won't fit the convertible unless you cut and modify them to fit.
Saw the videos of yesterday's flooding in Ellicott City. I hope you and your's came through okay and with no damage.