A 225/60R14 tire is 24.6″ tall and 8.9″ wide, and fits a 14″ wheel. In inches it is written 24.6×8.9R14.
Heights published by BFGoodrich for the one tire in this size. Their published revolutions per mile work out to 23.9″ under load (below).
The one tire listed, the BFGoodrich Radial T/A, measures 24.65″: 0.02″ taller than the size code's 24.63″.
Published revs per mile (844) mean the tire rolls like a 23.9″ tire on the vehicle. Use this for speedometer calibration.
Sort by the spec you care about.
Close. The size code works out to 24.63″, and the 1 tire here publishes 24.65″, so people call it a 25.
Differences in overall diameter, calculated from each size code.
Marks a P-metric (passenger) tire. Sizes with no letter are Euro-metric.
A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 135.0 mm or 5.31 inches.
Radial construction.
Mounts on a 14-inch wheel. Approved wheel widths run 6.0″ to 8.0″.
Each tire carries up to 1,477 lb (670 kg) at its maximum pressure.
Rated for up to 112 mph sustained.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 24.63 | 626 mm |
| Section width | 8.86 | 225 mm |
| Sidewall height | 5.31 | 135.0 mm |
| Circumference | 77.4 | 1,965 mm |
| Revolutions per mile (calculated, unloaded) | 818.8 | 509 per km |
| Revolutions per mile (published by manufacturers) | 844 | 524 per km |
| Approved wheel width | 6.0–8.0 | 152–203 mm |
24.63 inches tall, 8.86 inches wide, on a 14-inch wheel. Written in inches, that is roughly 24.6×8.9R14.
Manufacturers approve 6.0–8.0″ wide wheels for this size.
Published figures run 844 revolutions per mile. The calculated figure is 818.8, but manufacturers measure the tire under load, where it rolls on a smaller radius.
0.43 inches taller on paper (24.63″ vs 24.20″), which raises the axle about 0.22″. Your speedometer will read about 1.8% slow.