Section Width305 mm (12.0")
Aspect Ratio28%
Rim Diameter15"
Overall Diameter552 mm (21.7")
Sidewall Height85 mm
Circumference1734 mm
305/28R15 — Buy Tires

Everything to know about the 305/28R15 tire size

Size geometry

A 305/28R15 tire has a 305mm section width and a 28% aspect ratio, mounted on a 15-inch rim. Sidewall height works out to 85.4mm (3.36") and overall outside diameter is 551.8mm (21.72"). At highway speed the tire completes about 577 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 305/28R15 is unavailable, the closest same-diameter substitutes on the same rim are 295/29R15 and 315/27R15. Both keep your speedometer reading within 1% — safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.

Plus / minus sizing options

For a 305/28R15 you can upsize to 315/23R16 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 295/33R14 (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 305/28R15 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance — match these specs to your wheel before purchasing tires.

Vehicles Using 305/28R15

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