Section Width115 mm (4.5")
Aspect Ratio57%
Rim Diameter20"
Overall Diameter639 mm (25.2")
Sidewall Height66 mm
Circumference2008 mm
115/57R20 — Buy Tires

Everything to know about the 115/57R20 tire size

Size geometry

A 115/57R20 tire has a 115mm section width and a 57% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 65.5mm (2.58") and overall outside diameter is 639.1mm (25.16"). At highway speed the tire completes about 498 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/57R20 is unavailable, the closest same-diameter substitutes on the same rim are 105/62R20 and 125/52R20. 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 115/57R20 you can upsize to 125/42R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/75R19 (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 115/57R20 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 115/57R20

tire_size.no_vehicles_found