Utah has some of the best off-road trails in the nation and although there are no suspension lift limits, there are strict frame height regulations. Luckily, as long as vehicles remain compliant with this law, suspension lift kits, aftermarket wheels and tires, performance shocks, aftermarket bumpers, and grille guards are allowed to be installed on vehicles.
 Code |
The Utah Code (UC) governs the state’s street legal laws. |
UC Title 41 | ||||||||||||||||
 Dimensions |
All vehicles driven in Utah are restricted to a maximum width of 102 inches, a maximum height of 14 feet, and a single vehicle length limit of 45 feet. |
UC 72-7-402 | ||||||||||||||||
 Tires |
All vehicle tires must be safe and without any bulges or exposed cords. Utah requires a minimum tire tread depth of 1/16 inch. Tire grooving is not covered in the code. |
UC 41-6A-1636 | ||||||||||||||||
 Wheels |
Wheel spacers are prohibited in Utah. |
UC 41-6A-1630 | ||||||||||||||||
 Brakes |
Utah requires vehicles to have brakes capable of stopping the vehicle from a speed of 20 mph within 40 feet. A secondary, mechanical, parking brake is also required. |
UC 41-6A-1623 | ||||||||||||||||
 Steering |
Steering systems are not covered in Utah’s code. |
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 Suspension |
It is unlawful to install lift blocks on the front suspension of a vehicle driven in Utah. Any suspension lift blocks installed on the rear of a vehicle must be made of one piece. |
UC 41-6A-1630 | ||||||||||||||||
 Frame |
Utah has a vehicle frame height limit law based on the vehicle’s GVWR. In addition, the lowest portion of the vehicle’s floor cannot be more than 3 inches above the top of the frame.
( Measured to the bottom of the frame. ) |
UC 41-6A-1631 | ||||||||||||||||
 Bumpers |
Bumpers are required in Utah. All bumpers must be at least 4.5 inches tall. |
UC 41-6A-162 | ||||||||||||||||
 Fenders |
If a vehicle’s track-width has been modified, Utah requires that fenders and mud flaps be extended to cover the full width of the tires. |
UC 41-6A-1631 UC 41-6A-1633 |
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 Lights |
It is not clear if Utah’s street legal laws allow auxiliary lights to be installed in addition to headlights and tail lights.
( Measured to the center of the light. ) |
UC 41-6A-1604 UC 41-6A-1610 |
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 Windows |
The laws in Utah do not indicate whether or not windshields are required. Vehicles with windshields must, however, be equipped with windshield wipers. |
UC 41-6A-1635 | ||||||||||||||||
 Exhaust |
In Utah, mufflers are required equipment. Exhaust cutouts are prohibited. |
UC 41-6A-1626 | ||||||||||||||||
 Engine |
It is unclear whether or not Utah has any engine swap or engine performance modification rules. |
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 Emissions |
Only Davis, Salt Lake, and Weber counties currently require emissions testing in Utah. |