225 mm width · 60% aspect ratio · radial · 17-inch wheel
Nominal width in millimeters from sidewall to sidewall under standardized measuring conditions.
Sidewall height is nominally 60% of 225 mm—not 60 mm.
R identifies radial construction. It is not a radius measurement.
The tire is designed for a wheel with a 17-inch bead-seat diameter.
What does 99H after the size mean?
In a marking such as 225/60R17 99H, 99 is the load index and H is the speed symbol. Their meanings come from standardized tables. Replacement tires should meet the vehicle manufacturer’s requirements; a higher-looking number does not independently confirm fitment.
Tire size vs wheel size vs vehicle fitment
- Tire size: width, aspect ratio, construction, and rim diameter.
- Wheel size: diameter, width, offset, bolt pattern, and load capacity.
- Vehicle fitment: adds clearance, axle load, service description, approved pressure, and system compatibility.
Nominal dimensions vary slightly by tire model and measuring rim. Confirm published specifications for the exact product.
Frequently asked questions
What does 225/60R17 mean?
225 is nominal section width in millimeters, 60 is sidewall height as a percentage of width, R means radial construction, and 17 is the matching wheel diameter in inches.
Is tire size the same as wheel size?
No. The final number identifies wheel diameter, while the complete tire size also includes section width, aspect ratio, and construction.
Can I use a different tire size?
A dimension calculator can compare geometry, but fitment also requires manufacturer-approved load capacity, wheel width, clearance, and vehicle-system compatibility.