How much tire clearance do these add?

The Bigfoot flare profile extends the fender opening outward, allowing fitment of wider or more aggressive tire-and-wheel combinations than stock bodylines. Measure your current tire sidewall diameter and compare it to the flare extension at your install location to confirm your tire fits without rubbing at full suspension travel.

Do I need to drill holes to install these?

No. These flares bolt directly to factory mounting points on the body. If factory holes are filled or missing on your vehicle, drilling may be necessary — verify your specific vehicle's fastener pattern before install.

What wheel offsets work with the Bigfoot flare design?

The wider fender opening accommodates a range of offsets. Measure your current wheel offset and tire diameter, then test fit during installation to confirm clearance between the flare inner edge and your wheel/tire assembly at full droop and compression.