How much tire clearance do these flares add?

Circuit flares extend the body line to accommodate wider tire and wheel setups. Measure your current tire diameter and sidewall bulge, then verify clearance against the flare profile before installation. This ensures your specific tire size clears the inner edge of the panel.

Do I need to drill new mounting holes or modify the fender?

These flares are engineered to use factory mounting locations. No drilling is required if you're working with unmodified fenders. If your fenders have damage or custom modifications, inspect the mounting points and test-fit the flares before committing to fasteners.

What wheel offset and tire size work best with these?

Consult your vehicle's service manual or suspension documentation to determine safe wheel offset ranges for your setup. Pair that with your tire sidewall height and overall diameter, then visually test-fit the flares to confirm the wheel and tire combination clears the inner panel edge.