Section Width505 mm (19.9")
Aspect Ratio45%
Rim Diameter16"
Overall Diameter861 mm (33.9")
Sidewall Height227 mm
Circumference2705 mm
505/45R16 — Buy Tires

Everything to know about the 505/45R16 tire size

Size geometry

A 505/45R16 tire has a 505mm section width and a 45% aspect ratio, mounted on a 16-inch rim. Sidewall height works out to 227.3mm (8.95") and overall outside diameter is 860.9mm (33.89"). At highway speed the tire completes about 370 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 505/45R16 is unavailable, the closest same-diameter substitutes on the same rim are 495/46R16 and 515/44R16. Both keep your speedometer reading within 1% — safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.

Plus / minus sizing options

For a 505/45R16 you can upsize to 515/42R17 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 495/48R15 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.

Vehicle compatibility

0 vehicles in our database run the 505/45R16 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance — match these specs to your wheel before purchasing tires.

Vehicles Using 505/45R16

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