Section Width105 mm (4.1")
Aspect Ratio238%
Rim Diameter12"
Overall Diameter805 mm (31.7")
Sidewall Height250 mm
Circumference2528 mm
105/238R12 — Buy Tires

Everything to know about the 105/238R12 tire size

Size geometry

A 105/238R12 tire has a 105mm section width and a 238% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 249.9mm (9.84") and overall outside diameter is 804.6mm (31.68"). At highway speed the tire completes about 396 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 105/238R12 is unavailable, the closest same-diameter substitutes on the same rim are 95/263R12 and 115/217R12. 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 105/238R12 you can upsize to 115/206R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 95/276R11 (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 105/238R12 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 105/238R12

tire_size.no_vehicles_found