305/245R12 Tire Size Specifications
This tire size 305/245R12 fits 0 vehicles in our database.
Everything to know about the 305/245R12 tire size
Size geometry
A 305/245R12 tire has a 305mm section width and a 245% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 747.3mm (29.42") and overall outside diameter is 1799.3mm (70.84"). At highway speed the tire completes about 177 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 305/245R12 is unavailable, the closest same-diameter substitutes on the same rim are 295/253R12 and 315/237R12. 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 305/245R12 you can upsize to 315/233R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 295/258R11 (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 305/245R12 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 305/245R12
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