tireheight.com42×14.50R17 in inches
A 42×14.50R17 tire is 42.0″ tall and 14.5″ wide, and fits a 17″ wheel.
How tall 42×14.50R17 tires really are
Heights published by BFGoodrich for the one tire in this size. Their published revolutions per mile work out to 40.3″ under load (below).
The one tire listed, the BFGoodrich Mud-Terrain T/A KM3, measures 41.50″: 0.50″ shorter than the size code's 42.00″.
Published revs per mile (501) mean the tire rolls like a 40.3″ tire on the vehicle. Use this for speedometer calibration.
1 tire in 42×14.50R17
Sort by the spec you care about.
Is a 42×14.50R17 really 42 inches tall?
Shorter. The name says 42″, and the 1 tire here publishes 41.50″.
All 42-inch tire sizes, on every wheel size.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 42×14.50R17 | Difference |
|---|---|---|---|
| 40×12.50R17 | 40.00 | -2.00″ | -4.8% |
| 40×13.50R17 | 40.00 | -2.00″ | -4.8% |
| 40×13.50R18 | 40.00 | -2.00″ | -4.8% |
| 42×13.50R17 | 42.00 | 0.00″ | 0.0% |
How to read 42×14.50R17
42 inches tall, measured on the approved wheel. Flotation sizes give every number in inches.
14.50 inches across the widest point, or 368 mm.
Radial construction.
Mounts on a 17-inch wheel. Approved wheel widths run 9.5″ to 12.5″.
Marks a light truck (LT) tire.
Each tire carries up to 3,970 lb (1,800 kg) at its maximum pressure.
Rated for up to 99 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 3,970 lb each, as published.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 42.00 | 1067 mm |
| Section width | 14.50 | 368 mm |
| Sidewall height | 12.50 | 317.5 mm |
| Circumference | 131.9 | 3,351 mm |
| Revolutions per mile (calculated, unloaded) | 480.2 | 298 per km |
| Revolutions per mile (published by manufacturers) | 501 | 311 per km |
| Approved wheel width | 9.5–12.5 | 241–318 mm |
Speedometer error after switching to 42×14.50R17
Questions about 42×14.50R17
What is 42×14.50R17 in inches?
42.00 inches tall, 14.50 inches wide, on a 17-inch wheel. Manufacturers publish 41.50 inches for the 1 tires listed here.
What wheel width do I need for 42×14.50R17?
Manufacturers approve 9.5–12.5″ wide wheels for this size.
How many revolutions per mile does a 42×14.50R17 make?
Published figures run 501 revolutions per mile. The calculated figure is 480.2, but manufacturers measure the tire under load, where it rolls on a smaller radius.
How much taller is 42×14.50R17 than 40×13.50R17?
2.00 inches taller on paper (42.00″ vs 40.00″), which raises the axle about 1.00″. Your speedometer will read about 5.0% slow.