Wheel & Tire Protrusion in Idaho
Idaho requires fenders or covers over all wheels on all motor vehicles, extending the full width from a point above and forward of the tire center over and behind the wheel, reaching within 20 inches of the road (10 inches for trucks, buses, and trailers).
Verified against primary sources · August 2026
What the law says
Tires must effectively be covered — there is no 2-inch tolerance. Pre-1935 modified and replica show vehicles are exempt.
Specific Limits
- Fenders required
- over all wheels, full width, reaching within 20 in of the road on cars (10 in on trucks and buses)
Frequently Asked Questions
Are wheel & tire protrusion legal in Idaho?
What are the exact wheel & tire protrusion limits in Idaho?
Street-legal wheel & tire protrusion picks
Gear that helps you mod without a ticket in Idaho.
The standard fix when wheels stick out past the fender line.
Shop on AmazonSeveral states require them once tires extend beyond the body.
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