What does 700x25c Bike mean?

It specifies a 25 mm section width and a 24.5-inch bead-seat diameter.

What is the overall diameter of the 700x25c Bike Tire?

Its overall diameter is about 670.0 mm, with a circumference of 2104.9 mm.

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700x25c Bike Tire Size & Dimensions

Tires

Estimated Size (based on pre-release information)

The 700x25c Bike Tire has a section width of 25.0 mm ( 0.98 in), a 24.0 mm sidewall, and an overall diameter of 670.0 mm ( 26.38 in). It rolls 2104.9 mm per revolution. It weighs 300 g (10.6 oz).

Exact Dimensions

700x25c Bike Tire exact dimensions in millimeters and inches
Dimension	Metric	Imperial
Section width	25.0 mm	0.98 in
Sidewall height	24.0 mm	0.94 in
Overall diameter	670.0 mm	26.38 in
Rim diameter	622.0 mm	24.49 in
Circumference	2104.9 mm	82.87 in
Revolutions per mile	764.6	764.6
Weight	300 g	10.6 oz

Calculate another tire sizeCompare diameter, circumference, clearance change, and speedometer impact for a replacement tire.

Size in Context

The 700x25c Bike Tire has a section width of 25.0 mm, a sidewall height of 24.0 mm, and an overall diameter of 670.0 mm. Each revolution covers about 2104.9 mm. It weighs about 300 g.

The 700x25c Bike Tire is a vehicle component, so its outer diameter, width, and profile describe the space it needs rather than a pocket or desk footprint.

At 300 g, the 700x25c Bike Tire has the substantial feel expected of a vehicle component; size and weight both matter for fit and handling.