A 39×13.50R17 tire is 39.0″ tall and 13.5″ wide, and fits a 17″ wheel.
Heights published by BFGoodrich for all 2 tires in this size. Their published revolutions per mile work out to 37.3″ under load (below).
Real 39×13.50R17 tires measure 38.50″, against 39.00″ from the size code. Every one runs shorter than the size code.
Published revs per mile (540) mean the tire rolls like a 37.3″ tire on the vehicle. Use this for speedometer calibration.
The lightest (BFGoodrich All-Terrain T/A KO3, LT D) is 9.6 lb lighter per corner than the heaviest (BFGoodrich Mud-Terrain T/A KM3, LT C).
Sort by the spec you care about.
Shorter. The name says 39″, and the 2 tires here publish 38.50″.
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 39×13.50R17 | Difference |
|---|---|---|---|
| 37×12.50R17 | 37.00 | -2.00″ | -5.1% |
| 37×13.50R17 | 37.00 | -2.00″ | -5.1% |
| 38×11.50R17 | 38.00 | -1.00″ | -2.6% |
| 38×12.50R17 | 38.00 | -1.00″ | -2.6% |
| 38×11.50R18 | 38.00 | -1.00″ | -2.6% |
| 38×13.50R18 | 38.00 | -1.00″ | -2.6% |
| 38×15.50R18 | 38.00 | -1.00″ | -2.6% |
| 40×12.50R17 | 40.00 | +1.00″ | +2.6% |
| 40×13.50R17 | 40.00 | +1.00″ | +2.6% |
| 40×13.50R18 | 40.00 | +1.00″ | +2.6% |
39 inches tall, measured on the approved wheel. Flotation sizes give every number in inches.
13.50 inches across the widest point, or 343 mm.
Radial construction.
Mounts on a 17-inch wheel. Approved wheel widths run 9.0″ to 11.5″.
Marks a light truck (LT) tire.
Each tire carries up to 3,195 lb (1,450 kg) at its maximum pressure.
Rated for up to 106 mph sustained.
Printed separately as "LOAD RANGE D": a 8-ply rating, inflated up to 65 psi (standard load-range table). The load range D tires here carry up to 3,195 lb each, as published.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 39.00 | 991 mm |
| Section width | 13.50 | 343 mm |
| Sidewall height | 11.00 | 279.4 mm |
| Circumference | 122.5 | 3,112 mm |
| Revolutions per mile (calculated, unloaded) | 517.1 | 321 per km |
| Revolutions per mile (published by manufacturers) | 540 | 336 per km |
| Approved wheel width | 9.0–11.5 | 229–292 mm |
39.00 inches tall, 13.50 inches wide, on a 17-inch wheel. Manufacturers publish 38.50 inches for the 2 tires listed here.
Between 77.3 lb and 86.9 lb for the 2 tires listed here. The lightest is the BFGoodrich All-Terrain T/A KO3 (LT D); the heaviest is the BFGoodrich Mud-Terrain T/A KM3 (LT C).
Manufacturers approve 9.0–11.5″ wide wheels for this size.
Published figures run 540 revolutions per mile. The calculated figure is 517.1, but manufacturers measure the tire under load, where it rolls on a smaller radius.
1.00 inches taller on paper (39.00″ vs 38.00″), which raises the axle about 0.50″. Your speedometer will read about 2.6% slow.