Section Width235 mm (9.3")
Aspect Ratio168%
Rim Diameter42"
Overall Diameter1856 mm (73.1")
Sidewall Height395 mm
Circumference5832 mm
235/168R42 — Buy Tires

Everything to know about the 235/168R42 tire size

Size geometry

A 235/168R42 tire has a 235mm section width and a 168% aspect ratio, mounted on a 42-inch rim. Sidewall height works out to 394.8mm (15.54") and overall outside diameter is 1856.4mm (73.09"). At highway speed the tire completes about 171 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 235/168R42 is unavailable, the closest same-diameter substitutes on the same rim are 225/175R42 and 245/161R42. 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 235/168R42 you can upsize to 245/156R43 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 225/181R41 (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 235/168R42 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 235/168R42

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