A 195/60R16 tire is 25.2″ tall and 7.7″ wide, and fits a 16″ wheel. In inches it is written 25.2×7.7R16.
Heights published by Michelin for the one tire in this size. Their published revolutions per mile work out to 24.4″ under load (below).
The one tire listed, the Michelin X-Ice Snow, measures 25.20″: 0.01″ shorter than the size code's 25.21″.
Published revs per mile (825) mean the tire rolls like a 24.4″ tire on the vehicle. Use this for speedometer calibration.
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Yes. The size code works out to 25.21″, and the 1 tire here publishes 25.20″, so people call it a 25.
Differences in overall diameter, calculated from each size code.
A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 117.0 mm or 4.61 inches.
Radial construction.
Mounts on a 16-inch wheel. Approved wheel widths run 5.5″ to 7.0″.
Each tire carries up to 1,279 lb (580 kg) at its maximum pressure.
Rated for up to 130 mph sustained.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 25.21 | 640 mm |
| Section width | 7.68 | 195 mm |
| Sidewall height | 4.61 | 117.0 mm |
| Circumference | 79.2 | 2,012 mm |
| Revolutions per mile (calculated, unloaded) | 799.9 | 497 per km |
| Revolutions per mile (published by manufacturers) | 825 | 513 per km |
| Approved wheel width | 5.5–7.0 | 140–178 mm |
25.21 inches tall, 7.68 inches wide, on a 16-inch wheel. Written in inches, that is roughly 25.2×7.7R16.
Manufacturers approve 5.5–7.0″ wide wheels for this size.
Published figures run 825 revolutions per mile. The calculated figure is 799.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.
0.33 inches taller on paper (25.21″ vs 24.88″), which raises the axle about 0.17″. Your speedometer will read about 1.3% slow.