325/40R16 Tire Size Specifications
This tire size 325/40R16 fits 0 vehicles in our database.
Everything to know about the 325/40R16 tire size
Size geometry
A 325/40R16 tire has a 325mm section width and a 40% aspect ratio, mounted on a 16-inch rim. Sidewall height works out to 130.0mm (5.12") and overall outside diameter is 666.4mm (26.24"). At highway speed the tire completes about 478 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 325/40R16 is unavailable, the closest same-diameter substitutes on the same rim are 315/41R16 and 335/39R16. 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 325/40R16 you can upsize to 335/35R17 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/45R15 (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 325/40R16 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 325/40R16
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