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Uninsured & Underinsured Motorist Claims for Chicago Motorcyclists: Your Real Lifeline

Uninsured & Underinsured Motorist Claims for Chicago Motorcyclists: Your Real Lifeline

Illinois Law
Scheduled to publish August 13, 2026

You watched your lane on the Kennedy, you signaled, you were riding sober and alert. Then a driver blows a light on Ashland, clips your bike, and takes off, or hands you an insurance card for a policy that barely covers a fender. When the driver who wrecked you does not have enough insurance, the coverage that saves you is not theirs. It is yours.

Quick answer: Uninsured and underinsured motorist coverage (UM/UIM) is your own policy stepping in when the at-fault driver had no insurance, too little, or fled the scene. In Illinois, UM coverage is required and cannot be waived, which makes it a Chicago rider's real backstop.
25/50/20
Illinois minimum liability limits
$25,000
Minimum bodily injury per person
100/300
UM/UIM limits a rider should target

Why UM/UIM Is a Rider's Real Lifeline

Motorcyclists get hurt worse than people in cars. Same crash, far more serious injuries, because you do not have a steel cage, airbags, or crumple zones between you and the pavement. A collision that leaves a sedan driver with a stiff neck can leave a rider with surgeries, months off work, and a totaled bike.

Now do the math on the other side. Illinois only requires drivers to carry 25/50/20 in liability: $25,000 per person for bodily injury, $50,000 per crash, and $20,000 for property damage. That $25,000 does not get a seriously injured rider through the emergency room, let alone follow-up surgery and lost wages. And that assumes the at-fault driver even carried a legal policy. Plenty on Chicago roads do not. UM/UIM is what stands in that gap.

Illinois Requires UM, and You Cannot Waive It

Every auto liability policy issued in the state has to include UM coverage at least equal to the 25/50 bodily-injury minimum, and under Illinois law that UM coverage cannot be waived (625 ILCS 5/7-203; 215 ILCS 5/143a). You cannot accidentally opt out of it. If you carry a legal auto or motorcycle policy in Illinois, you have at least some UM protection built in. That matters in two common Chicago scenarios.

How UIM Stacks When the At-Fault Driver Is Underinsured

UIM does not replace the at-fault driver's coverage. It sits on top of it. Say you carry $250,000 in UIM coverage, and the driver who hit you on the Eisenhower carried only the state-minimum $25,000 in bodily injury. The at-fault driver's insurer pays their $25,000. Your UIM coverage then fills the gap up to your $250,000 limit. Total available to you: $275,000, the $25,000 from them plus up to $250,000 more from your own policy on top. Without UIM, you would be staring at that $25,000 and eating the rest of a six-figure injury yourself.

What Limits Should a Chicago Rider Carry?

Since UM/UIM is your real backstop, the state minimum is not where you want to be. A serious motorcycle injury blows past $25,000 fast. Riders with something to protect should think about 100/300 liability ($100,000 per person, $300,000 per crash), UM/UIM set to match that liability, MedPay of $5,000 to $10,000 that pays medical bills regardless of fault, and an umbrella policy if you own a home or have real assets to shield. Weigh the small monthly cost against how far a $25,000 policy would actually stretch after one bad left-turn crash on Milwaukee Avenue.

Insurers Fight UM/UIM Claims Too, Even Your Own

When you file a UM/UIM claim, you are making a claim against your own insurance company, and they do not roll over just because you have paid your premiums for years. The same playbook applies: adjusters diminish, devalue, and deny. They question whether your injuries are as serious as you say, argue you were partly at fault, or lowball what your claim is worth. UM/UIM claims often go to arbitration, and the insurer will have lawyers. You should too.

Hit by an uninsured or underinsured driver near Chicago?
Derek Martin and the Driver Defense Team, part of Ride Nation Chicago and home of the BikersWin $20,000 motorcycle giveaway, will review your UM/UIM claim at no cost and tell you what coverage is really in play.
Derek Martin
Founder, Driver Defense Team. Member, National Academy of Motorcycle Injury Lawyers
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