315/40R21 Tires
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Find it on your tire sidewall, e.g. 215/60R16
How to read 315/40R21
The size 315/40R21 gives three measurements: tread width 315 mm, sidewall height 126 mm (40% of the width), and rim size 21 in. Overall diameter is 785 mm (about 30.9 in). One full turn covers 2.47 m, or 405 turns per km.
To learn what each number means, read How to read a tire size
Other 21-inch sizes in stock
Other 21-inch tire sizes in stock now. Tap a size to see prices and models.
The sizes above are not substitutes. They are just other sizes for the same rim that we have in stock. Switching sizes depends on your car's actual rim width, load index, and wheel-well clearance, which this website can't check. To switch sizes, send a photo of your current tire's sidewall and your car model to LINE @subphaisal and our technicians will help.