Simply look for the words “Run Flat” on the side of your tire, usually near other manufacturer information and numbers. [1] X Research source
Look for these codes on the sides of your tires near the other numbers and manufacturer information. [2] X Research source
Look for any of these codes on the sides of your tires near the manufacturer information. [3] X Research source
Specific car companies more commonly use run-flat tires on their new cars, especially BMW and Lexus. Toyota puts run flat-tires on some of their coupes and sedans. If you have one of these types of cars with original tires on it, it’s possible that you have run-flat tires. BMW cars are by far the most common car where you will find run-flat tires. If you have a newer BMW, chances are high that you have run-flat tires.
If you’re still not sure, ask the dealer or check in your owner’s manual to find out. [5] X Research source
Your owner’s manual will explain where to look for this warning and what to do if it lights up. [6] X Research source