Popular 18-inch SUV comparison

235/60R18 vs 225/60R18

A 225/60R18 tire is narrower and slightly shorter than a 235/60R18 tire, often considered when comparing common crossover tire options.

Live calculator

View this exact comparison on the main calculator

The calculator opens with 235/60R18 and 225/60R18 already filled in, including the visual tire diagram, speedometer gauge, metric toggle, and share link.

Open live calculator

Good match The overall diameter stays within the common target range, but confirm the narrower size still meets the vehicle load and wheel-width requirements.

235/60R18 vs 225/60R18 dimensions summary
Measurement	235/60R18	225/60R18
Overall diameter	29.10 in	28.63 in
Sidewall height	5.55 in	5.31 in
Circumference	91.43 in	89.94 in
Revolutions per mile	693	704
Ground clearance change	0.00 in	-0.24 in
Diameter difference	0.0%	-1.6%

Height change -0.47 in -12 mm overall diameter

Speedometer at 60 mph 59.0 mph -1.0 mph difference

Diameter difference -1.6% The overall diameter is within 3%, which is usually a reasonable target for a tire size change.

What changes between 235/60R18 and 225/60R18?

The main difference is overall diameter. 225/60R18 measures 28.63 in across, compared with 29.10 in for 235/60R18. That creates a -1.6% diameter change and a -0.24 in ground clearance change.

At an indicated 60 mph, this comparison estimates an actual speed of 59.0 mph. Use the live calculator before buying tires so you can review the visual clearance change, speedometer numbers, and shareable comparison link in one place.