Section Width135 mm (5.3")
Aspect Ratio197%
Rim Diameter12"
Overall Diameter837 mm (32.9")
Sidewall Height266 mm
Circumference2629 mm
135/197R12 — Buy Tires

Everything to know about the 135/197R12 tire size

Size geometry

A 135/197R12 tire has a 135mm section width and a 197% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 265.9mm (10.47") and overall outside diameter is 836.7mm (32.94"). At highway speed the tire completes about 380 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 135/197R12 is unavailable, the closest same-diameter substitutes on the same rim are 125/213R12 and 145/183R12. 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 135/197R12 you can upsize to 145/175R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 125/223R11 (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 135/197R12 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 135/197R12

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