Motorcycle Accident Laws in Michigan (2026): Deadlines & Helmets

A Michigan motorcycle crash is a personal injury case, but Michigan stands out for two reasons: its unique no-fault auto system treats motorcycles very differently from cars, and since 2012 the state has had only a partial helmet law. On top of those sit the same core questions in every injury claim, the deadline to sue and the fault rule. This guide explains how those rules work for Michigan riders. It is general legal information and attorney advertising, not legal advice.

The deadline to sue in Michigan

The statute of limitations for a personal injury claim in Michigan is three years from the date of the crash, set by MCL 600.5805, which fixes a three-year period for all actions to recover damages for injury to a person or property. A wrongful death claim arising from a fatal crash follows the same three-year period and is brought by the personal representative of the estate, with the clock generally running from the date of death.

The three-year deadline is firm, and for an injured rider bringing his or her own claim, missing it usually ends the case. A wrongful death claim has one narrow saving provision: MCL 600.5852(1) lets the personal representative bring the action within 2 years after letters of authority are issued even though the period of limitations has run, and MCL 600.5852(4) caps that extension by barring any action under the section later than 3 years after the period of limitations has run. It is a backstop, not a substitute for filing on time. Separately, no-fault PIP benefits carry their own one-year filing rule and a related limit on how far back medical expenses can be recovered, so a rider needs to act quickly on the benefits side as well as the lawsuit side. Claims against a government entity can carry shorter notice deadlines.

Fault rule: comparative fault with a bar on pain and suffering

Michigan's fault rule can have two layers, and whether the first one applies depends on what the rider collided with. If the claim is against the owner or driver of a car, truck, or other motor vehicle, Michigan's no-fault threshold statute applies first. MCL 500.3135(1) provides that a person remains subject to tort liability for noneconomic loss caused by his or her ownership, maintenance, or use of a motor vehicle only if the injured person has suffered death, serious impairment of body function, or permanent serious disfigurement. If the injury does not clear that bar, pain-and-suffering damages against that defendant are barred regardless of fault.

The threshold does not reach every Michigan motorcycle claim. Both MCL 500.3135(1) and the abolition of tort liability in MCL 500.3135(3) are written around liability arising from the ownership, maintenance, or use of a motor vehicle, and MCL 500.3101(3)(i) expressly provides that a motorcycle is not a motor vehicle; MCL 500.3101(3)(h) in turn defines a motorcycle accident as a loss that does not involve the use of a motor vehicle as a motor vehicle. A rider hurt in a single-motorcycle crash, or in a collision with another motorcycle, is therefore generally not facing a serious-impairment gate on noneconomic damages at all.

Where the threshold does not apply, and where it applies and is met, MCL 600.2959 governs how fault affects the claim: your economic damages, such as medical bills and lost wages, are reduced by your percentage of fault no matter how high that percentage is, but noneconomic damages, the pain-and-suffering portion of a claim, are barred entirely if your fault is greater than the combined fault of everyone else. In plain terms, you can recover pain-and-suffering damages only if you are 50 percent or less at fault and, where the defendant is a motor vehicle owner or driver, only if your injury also meets the MCL 500.3135 threshold; at 51 percent or more you get nothing for noneconomic loss, though your economic damages are still reduced rather than eliminated.

For riders, this matters because insurers routinely argue the motorcyclist shares blame. Pushing a rider past the 50 percent line is how a defendant tries to wipe out the pain-and-suffering portion of a claim, so documenting the other driver's fault is critical.

No-fault insurance and how motorcycles are treated

Michigan has a no-fault auto system, but motorcycles are not motor vehicles under it, and that single fact drives everything about a motorcyclist's claim. A motorcycle owner does not buy PIP the way a car owner does. Instead, when a motorcyclist is injured in a crash involving a motor vehicle, MCL 500.3114 sets an order of priority for who pays the rider's PIP benefits. That order generally begins with the insurer of the owner of the involved motor vehicle, then the insurer of the driver of that vehicle, and then the motorcyclist's own auto policy if one exists.

Michigan's 2019 no-fault reform, effective in 2020, lets drivers choose among PIP medical coverage levels under MCL 500.3107c, ranging from a 50,000 dollar Medicaid-tied option up to unlimited coverage, with 250,000 and 500,000 dollar tiers in between. Because an injured motorcyclist draws benefits from the involved car's policy, the rider's available PIP can be capped at whatever level that driver selected. Critically, in a motorcycle-only crash with no motor vehicle involved, there may be no PIP available at all, which is why a Michigan rider's own first-party medical coverage, including any coverage carried to satisfy the helmet exemption, is so important.

Michigan helmet law

Michigan repealed its universal helmet requirement in 2012 and now has a partial law under MCL 257.658. Operators and passengers under 21 must wear an approved crash helmet. A rider 21 or older may operate or ride without a helmet only if specific conditions are met: the operator must have held a motorcycle endorsement for at least two years or have passed an approved motorcycle safety course, and the rider must carry first-party medical benefits security of at least 20,000 dollars in the event of a motorcycle accident. A passenger 21 or older may also ride without a helmet where the required first-party medical coverage is in place.

The helmet exemption is therefore tied directly to insurance. The 20,000 dollar first-party medical coverage that lets an eligible adult ride bare-headed is also the coverage that can matter most after a crash, particularly a motorcycle-only crash where no auto PIP applies.

Helmet non-use and your case

Because Michigan allows eligible adults to ride without a helmet, the question of whether non-use can be raised against an injured rider can come up. A defendant may argue that a rider who lawfully chose not to wear a helmet contributed to head injuries, and Michigan's comparative fault statute governs how any such argument affects recovery, reducing economic damages by the rider's share of fault and barring noneconomic damages entirely if the rider is more than 50 percent at fault overall, on top of the separate MCL 500.3135 threshold, which applies where the claim is against a motor vehicle owner or driver and requires death, serious impairment of a body function, or permanent serious disfigurement before noneconomic damages can be pursued against that defendant. Whether a helmet issue is admitted and how it is weighed is fact-specific and best evaluated by a Michigan attorney on the records of the case.

Lane splitting and lane filtering

Lane splitting and lane filtering are not legal in Michigan. The operative rule is MCL 257.660(5), which provides that a person operating a motorcycle shall not pass between lines of traffic. The same subsection does allow a rider to pass on the left of traffic moving in his or her direction on a two-way street, or on the left or right of traffic on a one-way street, but only in an unoccupied lane. That is an ordinary lane-change pass using a lane no one is in, not filtering between stopped or slow-moving vehicles, which remains prohibited. A separate provision, MCL 257.660(2), entitles a motorcycle to full use of a lane and bars other drivers from crowding a rider out of it. A rider who was splitting lanes at the time of a crash can expect that conduct to be raised in the fault analysis. Legislative proposals to allow low-speed lane filtering have been introduced but have not become law, so riders should treat the practice as prohibited.

Damage caps and minimum insurance

Michigan does not cap ordinary compensatory damages in a motorcycle injury case, so there is no general ceiling on medical expenses, lost income, or pain and suffering, subject to the comparative fault rule above. Certain categories of claims, such as some product liability and medical malpractice actions, have their own caps that a lawyer can flag where relevant.

For the at-fault side, Michigan's reform raised the minimum bodily injury liability limits for cars to 250,000 dollars per person and 500,000 dollars per accident by default, although drivers may elect lower limits of 50,000 and 100,000 dollars in writing. Motorcycle owners must carry the same residual bodily injury liability limits as other vehicles under MCL 500.3103 and 500.3009(1): 250,000 dollars per person and 500,000 dollars per accident by default (with a written opt-down floor of 50,000/100,000), plus 10,000 dollars for property damage. Because these floors can be low relative to a serious motorcycle injury, the at-fault driver's actual limits and the rider's own coverage often determine what is collectible.

Why motorcycle cases are different

Motorcycle crashes tend to cause far more serious injuries than car crashes, which means higher medical costs, larger claims, and a more aggressive insurance defense. Michigan riders also face the specific issues above: the partial helmet law tied to insurance, the unusual no-fault priority order that can leave a rider with limited or no PIP, the rule that pain-and-suffering damages disappear once a rider is more than half at fault, and, in a claim against a motor vehicle owner or driver, Michigan's separate MCL 500.3135 threshold that bars noneconomic damages unless the injury involves death, serious impairment of a body function, or permanent serious disfigurement. A documented bias against motorcyclists among some jurors and adjusters is one more reason that careful, contemporaneous documentation matters.

Evidence and how to evaluate your options

If you or a family member was hurt in a Michigan motorcycle crash, get medical care and keep every record, obtain the police report, photograph the scene, the bike, and your gear, and save the other driver's information and any witness contacts. Then speak promptly with a licensed Michigan attorney, both because of the three-year lawsuit deadline and the much shorter one-year window for no-fault benefits, and because early evidence is often decisive. Most motorcycle accident attorneys offer a free consultation and work on a contingency basis, meaning no upfront fee and payment only out of any recovery. No reputable lawyer can promise an outcome or a dollar amount, and reading this page does not create an attorney-client relationship.