Kentucky’s street legal laws are very open to vehicle modifications. There are no restrictions on a vehicle’s suspension, frame, or bumpers. Drivers can install suspension lift kits, aftermarket wheels and tires, performance shocks, aftermarket bumpers, and grille guards without worry.
![]() Code |
Kentucky details its street legal laws in the Kentucky Revised Statutes (KRS). |
KRS Title 16 | ||||||||||||
![]() Dimensions |
In Kentucky, vehicles have a maximum size of 96 inches wide, 11 feet 6 inches tall, and 26 feet 6 inches long for a single vehicle. |
KRS 16-189-221 | ||||||||||||
![]() Tires |
All tires on vehicles driven in Kentucky must be safe. There is no listed minimum tire tread depth. Tire grooving is prohibited. |
KRS 16-189-205 | ||||||||||||
![]() Wheels |
Wheels are not covered in Kentucky’s laws. |
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![]() Brakes |
Vehicles driven in Kentucky are required 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. |
KRS 16-189-090 | ||||||||||||
![]() Steering |
Kentucky requires that a vehicle’s steering system not be defective. |
KRS 16-189-100 | ||||||||||||
![]() Suspension |
There are no specific suspension laws in Kentucky. |
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![]() Frame |
Kentucky’s street legal laws do not list a frame height restriction. |
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![]() Bumpers |
Bumpers are not restricted under Kentucky’s laws. |
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![]() Fenders |
It is unknown if fenders and mud flaps are required in Kentucky. |
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![]() Lights |
Kentucky only references headlights and tail lights in its statutes.
( Measured to the center of the light. ) |
KRS 16-189-040 KRS 16-189-050 |
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![]() Windows |
A windshield and windshield wipers are required equipment in Kentucky. |
KRS 16-189-110 | ||||||||||||
![]() Exhaust |
Kentucky requires vehicles to be equipped with mufflers. Exhaust cutouts and bypasses are not allowed. |
KRS 16-189-140 | ||||||||||||
![]() Engine |
Engine modifications and engine swaps are not covered in Kentucky’s laws. |
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![]() Emissions |
The state of Kentucky does not require emissions testing. |














