How to Measure for Fender Flares

Updated on May 5, 2025

RealTruck Expert Team
Written by
 RealTruck Expert Team
White truck with off-road tires parked on a dirt area with grass and trees in the background.

Depending on the ordinances in your state of residence, installing a set of fender flares on your truck could be mandatory if you've installed a wide set of aftermarket tires. To ensure that your flares provide complete tire coverage, you'll need to measure the gap between your fender and your tires.

Measuring for Fender Flares

To find out how wide your fender flares should be, use a tape measure to ascertain how far from your vehicle's fender your tires stick out. Hook the tape measure to the outer edge of your tire, then measure back to the fender and bend the tape measure upward at a 90-degree angle, stopping when the tape is flush with the fender. The measurement displayed at the 90-degree bend is the amount of coverage you'll need. Make sure you choose a fender flare at least as wide as this measurement, if not a little wider.

Measuring tire clearance with a tape measure on a vehicle.
Measuring tire tread depth with a ruler on a vehicle's tire.

If you have questions about fender flares, chat in or call our product experts at 877-216-5446.


Recommended Products

1. Bushwacker Pocket Style Fender Flares

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The best-selling fender flare on RealTruck.com, Bushwacker Pocket Style Fender Flares have a riveted look with little to no drilling required for installation.

2. EGR Rugged Fender Flares

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EGR Rugged Fender Flares are a great choice for customers who prefer a smooth finish without decorative bolts.

3. Spec-D Bolt On Fender Flares

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The smooth black finish on Spec-D Bolt On Fender Flares can be painted to match your truck.

If you have questions about fender flares, contact our product experts.

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