40x15.50R26 is a flotation size: 40 inches tall, 15.50 inches wide, on a 26 inch wheel. In metric it is 394/45R26, which is how the catalogue stores it. Whether 40x15.50R26 works comes down to the wheel width it mounts on and how far it lands from the height the car left the factory with.
2 lines carry 40x15.50R26, from 2 brands (Nitto and Toyo). The tire has to stay near your car's stock height and mount on your wheel width, so pick the car and the wheel set and the page keeps only the 40x15.50R26 lines that do both.
Common questions
What does 40x15.50R26 mean?
40 is the overall height in inches, 15.50 the section width in inches, R means radial and 26 is the wheel diameter. The same tire in metric is 394/45R26.
Will 40x15.50R26 fit your car?
Pick your year, make and model and the tires page answers it for yours. The wheel width has to carry the section width and the overall height has to stay near where the car started.
What wheel width fits 40x15.50R26?
Each product page lists the rim width range the tire maker approves. Pick a 26 inch wheel set and the tire step checks the width for you.
Toyo Open Country M/T (Load E)40 sizes · from $320.64 per tire