A 295/35R23 tire is 31.1″ tall and 11.6″ wide, and fits a 23″ wheel. In inches it is written 31.1×11.6R23.
Heights published by Michelin for the one tire in this size. Their published revolutions per mile work out to 30.1″ under load (below).
The one tire listed, the Michelin Pilot Sport 4 SUV, measures 31.10″: 0.03″ shorter than the size code's 31.13″.
Published revs per mile (669) mean the tire rolls like a 30.1″ tire on the vehicle. Use this for speedometer calibration.
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Yes. The size code works out to 31.13″, and the 1 tire here publishes 31.10″, so people call it a 31.
All 31-inch tire sizes, on every wheel size.
Differences in overall diameter, calculated from each size code.
A percentage, not a measurement: the sidewall is 35% as tall as the tire is wide, which is 103.3 mm or 4.06 inches.
Radial construction.
Mounts on a 23-inch wheel. Approved wheel widths run 10.0″ to 11.5″.
Each tire carries up to 2,205 lb (1,000 kg) at its maximum pressure.
Rated for up to 186 mph sustained.
Printed after the size.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 31.13 | 791 mm |
| Section width | 11.61 | 295 mm |
| Sidewall height | 4.06 | 103.3 mm |
| Circumference | 97.8 | 2,484 mm |
| Revolutions per mile (calculated, unloaded) | 647.9 | 403 per km |
| Revolutions per mile (published by manufacturers) | 669 | 416 per km |
| Approved wheel width | 10.0–11.5 | 254–292 mm |
31.13 inches tall, 11.61 inches wide, on a 23-inch wheel. Written in inches, that is roughly 31.1×11.6R23.
Manufacturers approve 10.0–11.5″ wide wheels for this size.
Published figures run 669 revolutions per mile. The calculated figure is 647.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.
0.22 inches taller on paper (31.13″ vs 30.91″), which raises the axle about 0.11″. Your speedometer will read about 0.7% slow.