Section Width155 mm (6.1")
Aspect Ratio102%
Rim Diameter20"
Overall Diameter824 mm (32.5")
Sidewall Height158 mm
Circumference2589 mm
155/102R20 — Buy Tires

Everything to know about the 155/102R20 tire size

Size geometry

A 155/102R20 tire has a 155mm section width and a 102% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 158.1mm (6.22") and overall outside diameter is 824.2mm (32.45"). At highway speed the tire completes about 386 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/102R20 is unavailable, the closest same-diameter substitutes on the same rim are 145/109R20 and 165/96R20. 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 155/102R20 you can upsize to 165/88R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/118R19 (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 155/102R20 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 155/102R20

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