Do I need to remove the OEM fenders to install these?

No. These are over fenders designed to mount over your existing factory fenders. Mount points align with the original panel structure, so you're adding width without removing anything — just clean the mounting surface and follow standard bolt-down procedure using your existing hardware locations.

What do I need to do to prep these for paint?

Sand the primer surface lightly with fine-grit sandpaper to ensure your chosen paint adheres properly, then clean away any dust. The FRP arrives in raw FRP condition, so you're just prepping for topcoat — no heavy stripping or body filler needed.

Will these affect my tire clearance or suspension geometry?

These add 35mm of width to the fender opening. Verify your wheel and tire setup has clearance within the expanded fender well, especially if you're running aggressive offsets or lowered suspension. Measure your current tire-to-fender gap and account for the extension before installation.