Section Width135 mm (5.3")
Aspect Ratio126%
Rim Diameter20"
Overall Diameter848 mm (33.4")
Sidewall Height170 mm
Circumference2665 mm
135/126R20 — Buy Tires

Everything to know about the 135/126R20 tire size

Size geometry

A 135/126R20 tire has a 135mm section width and a 126% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 170.1mm (6.70") and overall outside diameter is 848.2mm (33.39"). At highway speed the tire completes about 375 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 135/126R20 is unavailable, the closest same-diameter substitutes on the same rim are 125/136R20 and 145/117R20. 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 135/126R20 you can upsize to 145/109R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 125/146R19 (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 135/126R20 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 135/126R20

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