305/99R15 Tire Size Specifications
This tire size 305/99R15 fits 0 vehicles in our database.
Everything to know about the 305/99R15 tire size
Size geometry
A 305/99R15 tire has a 305mm section width and a 99% aspect ratio, mounted on a 15-inch rim. Sidewall height works out to 301.9mm (11.89") and overall outside diameter is 984.9mm (38.78"). At highway speed the tire completes about 323 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 305/99R15 is unavailable, the closest same-diameter substitutes on the same rim are 295/102R15 and 315/96R15. 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 305/99R15 you can upsize to 315/92R16 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 295/107R14 (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 305/99R15 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 305/99R15
tire_size.no_vehicles_found