125/348R40 Tire Size Specifications
This tire size 125/348R40 fits 0 vehicles in our database.
Everything to know about the 125/348R40 tire size
Size geometry
A 125/348R40 tire has a 125mm section width and a 348% aspect ratio, mounted on a 40-inch rim. Sidewall height works out to 435.0mm (17.13") and overall outside diameter is 1886.0mm (74.25"). At highway speed the tire completes about 169 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 125/348R40 is unavailable, the closest same-diameter substitutes on the same rim are 115/378R40 and 135/322R40. Both keep your speedometer reading within 1% â safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.
Plus / minus sizing options
For a 125/348R40 you can upsize to 135/313R41 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 115/389R39 (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 125/348R40 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance â match these specs to your wheel before purchasing tires.
Vehicles Using 125/348R40
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