785/42R15 Tire Size Specifications
This tire size 785/42R15 fits 0 vehicles in our database.
Everything to know about the 785/42R15 tire size
Size geometry
A 785/42R15 tire has a 785mm section width and a 42% aspect ratio, mounted on a 15-inch rim. Sidewall height works out to 329.7mm (12.98") and overall outside diameter is 1040.4mm (40.96"). At highway speed the tire completes about 306 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 785/42R15 is unavailable, the closest same-diameter substitutes on the same rim are 775/43R15 and 795/41R15. 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 785/42R15 you can upsize to 795/40R16 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 775/44R14 (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 785/42R15 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 785/42R15
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