A 215/70R14 tire is 25.9″ tall and 8.5″ wide, and fits a 14″ wheel. In inches it is written 25.9×8.5R14.
Heights published by BFGoodrich, General and Toyo for all 3 tires in this size. Their published revolutions per mile work out to 25.1″ under load (below).
Real 215/70R14 tires measure 25.90–25.91″, against 25.85″ from the size code. Every one runs taller than the size code.
Published revs per mile (802–804) mean the tire rolls like a 25.1″ tire on the vehicle. Use this for speedometer calibration.
The lightest (General AltiMAX RT45, SL) is 6.0 lb lighter per corner than the heaviest (BFGoodrich Radial T/A, SL).
Sort by the spec you care about.
Yes. The size code works out to 25.85″, and the 3 tires here publish 25.90–25.91″, so people call it a 26.
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 70% as tall as the tire is wide, which is 150.5 mm or 5.93 inches.
Radial construction.
Mounts on a 14-inch wheel. Approved wheel widths run 5.5″ to 7.0″.
Each tire carries up to 1,565 lb (710 kg) at its maximum pressure.
Rated for up to 112 mph sustained.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 25.85 | 657 mm |
| Section width | 8.46 | 215 mm |
| Sidewall height | 5.93 | 150.5 mm |
| Circumference | 81.2 | 2,063 mm |
| Revolutions per mile (calculated, unloaded) | 780.2 | 485 per km |
| Revolutions per mile (published by manufacturers) | 802–804 | 498–500 per km |
| Approved wheel width | 5.5–7.0 | 140–178 mm |
25.85 inches tall, 8.46 inches wide, on a 14-inch wheel. Written in inches, that is roughly 25.9×8.5R14.
Between 20.5 lb and 26.5 lb for the 3 tires listed here. The lightest is the General AltiMAX RT45 (SL); the heaviest is the BFGoodrich Radial T/A (SL).
Manufacturers approve 5.5–7.0″ wide wheels for this size.
Published figures run 802–804 revolutions per mile. The calculated figure is 780.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.
0.28 inches taller on paper (25.85″ vs 25.57″), which raises the axle about 0.14″. Your speedometer will read about 1.1% slow.