Massachusetts Street Legal Laws

Minnesota Street Legal Laws

Michigan Lift Laws and Vehicle Equipment Laws

Michigan has street legal laws that limit a vehicle's frame height and bumper height. Lift blocks are not allowed on front springs, and rear lift blocks are limited to 4 inches. While keeping within these restrictions, Michigan drivers are allowed to install suspension lift kits, aftermarket wheels and tires, performance shocks, aftermarket bumpers, and grille guards.

Governing Laws


The Michigan Compiled Laws (MCL) define the street legal laws for the state.

MCL Ch. 257

Vehicle Dimensions


Vehicle dimensions in Michigan are limited to an overall width of 102 inches, a height of 13 feet 6 inches, and a single vehicle length of 45 feet. The width of a vehicle's body is limited to 96 inches.

MCL 257-717
MCL 257-719

Tire Restrictions


Michigan requires that all tires be in safe condition. Tires must not have any exposed cords or bulges. There is a minimum tire tread depth of 1/16 inch. Tires are allowed to be grooved, just not any deeper than the original tread depth.

MCL 257-710

Wheel Restrictions


There are no laws specifically related to wheels found in Michigan's laws.

Braking Requirements


Vehicles driven in Michigan are required to have brakes on all 4 wheels. The brakes must be capable of stopping the vehicle from a speed of 20 mph within 30 feet. A secondary, mechanical, parking brake is also required.

MCL 257-705

Steering Laws


Michigan requires that a vehicle's steering system retains the factory geometry. It is unlawful to weld on pitman arms, drag links, or tie rods.

MCL 257-710C

Suspension Laws


In Michigan, front lift blocks are prohibited. Rear lift blocks must be one piece and cannot be more than 4 inches tall. Spring shackles cannot be more than 2 inches longer than stock.

MCL 257-710C

Frame Requirements


The maximum vehicle frame height in Michigan depends on the vehicle's GVWR.

Vehicle GVWR

Max. Frame Height

Under 4,501

24 inches

4,501 to 7,500

24 inches

7,501 to 10,000

26 inches

( Measured to the bottom of the frame at midway between front and rear axles. )

MCL 257-710C

Bumper Restrictions


Vehicle bumper height in Michigan is limited according to the vehicle's GVWR.

Vehicle GVWR

Max. Bumper Height

Under 4,501

26 inches

4,501 to 7,500

28 inches

7,501 to 10,000

30 inches

( Measured to the bottom of the bumper at highest point. )

MCL 257-710C

Fender Requirements


It unknown if fenders or mud flaps are required in Michigan.

Lighting Requirements


In addition to headlights and tail lights, vehicles in Michigan are allowed to have auxiliary lights. When a vehicle is equipped with extra lighting, no more than 4 front lights can be on at one time while driving.



Min. Height

Max. Height


2 min.

24 inches

54 inches

Tail lights

1 min.



Spot lights

2 max.



Fog lights

2 max.

12 inches

30 inches

( Measured to the center of the light. )

MCL 257-685
MCL 257-686
MCL 257-969
MCL 257-685

Window Laws


All vehicles are required to have windshields and windshield wipers in Michigan.

MCL 257-708A
MCL 257-709

Exhaust Requirements


Mufflers are required on all vehicles in Michigan. Exhaust cutouts and bypasses are prohibited.

MCL 257-707

Engine Swap Rules


It is unclear whether or not Michigan has any engine swap or engine performance modification rules.

Emissions Testing


Michigan does not require emissions testing.

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