How much tire clearance do these flares add?

These over-fenders extend the body line outward, giving you room to run wider rubber without rubbing the inner fender well. Your actual clearance gain depends on current tire width and wheel offset. Before final installation, mock-fit your wheel-and-tire combo and check clearance at full lock and full compression to confirm fitment for your specific setup.

Do I need to drill into the vehicle body to install these?

The fender flares are designed around factory mounting references. Review your vehicle's OEM fender attachment points and fastener locations before assembly. Most installs work with existing holes; however, you may need to verify panel alignment with your specific vehicle to avoid unnecessary drilling.

What wheel sizes and offsets work best with these flares?

Over-fenders work across a range of wheel sizes, but offset is the critical variable. Deeper offsets push the wheel further out and reduce clearance; shallower offsets pull the wheel inward. Measure your current setup (wheel width and offset) and compare against your tire sidewall height and intended suspension geometry. Many builders use these flares with 17- to 18-inch wheels, but your fitment depends entirely on those three factors.