tireheight.com30×9.50R15 in inches
A 30×9.50R15 tire is 30.0″ tall and 9.5″ wide, and fits a 15″ wheel.
How tall 30×9.50R15 tires really are
Heights published by BFGoodrich and Toyo for all 3 tires in this size. Their published revolutions per mile work out to 28.6–28.9″ under load (below).
Real 30×9.50R15 tires measure 29.50–29.76″, against 30.00″ from the size code. Every one runs shorter than the size code.
- Toyo Open Country A/T III29.76″ −0.24″
- BFGoodrich All-Terrain T/A KO329.50″ −0.50″
- BFGoodrich Mud-Terrain T/A KM329.50″ −0.50″
Published revs per mile (698–705) mean the tire rolls like a 28.6–28.9″ tire on the vehicle. Use this for speedometer calibration.
The lightest (BFGoodrich All-Terrain T/A KO3, LT C) is 7.2 lb lighter per corner than the heaviest (BFGoodrich Mud-Terrain T/A KM3, LT C).
3 tires in 30×9.50R15
Sort by the spec you care about.
Is a 30×9.50R15 really 30 inches tall?
Shorter. The name says 30″, and the 3 tires here publish 29.50–29.76″.
All 30-inch tire sizes, on every wheel size.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 30×9.50R15 | Difference |
|---|---|---|---|
| 235/75R15 | 28.88 | -1.12″ | -3.7% |
| 255/70R15 | 29.06 | -0.94″ | -3.1% |
| 265/70R15 | 29.61 | -0.39″ | -1.3% |
| 235/75R16 | 29.88 | -0.12″ | -0.4% |
| 30×10.00R15 | 30.00 | 0.00″ | 0.0% |
| 30×10.00R14 | 30.00 | 0.00″ | 0.0% |
| 255/70R16 | 30.06 | +0.06″ | +0.2% |
| 215/85R16 | 30.39 | +0.39″ | +1.3% |
| 265/75R15 | 30.65 | +0.65″ | +2.2% |
| 31×10.50R15 | 31.00 | +1.00″ | +3.3% |
How to read 30×9.50R15
30 inches tall, measured on the approved wheel. Flotation sizes give every number in inches.
9.50 inches across the widest point, or 241 mm.
Radial construction.
Mounts on a 15-inch wheel. Approved wheel widths run 6.0″ to 8.5″.
Marks a light truck (LT) tire.
Each tire carries up to 1,984 lb (900 kg) at its maximum pressure.
Rated for up to 106 mph sustained.
Printed separately as "LOAD RANGE C": a 6-ply rating, inflated up to 50 psi (standard load-range table). The load range C tires here carry up to 1,985 lb each, as published.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 30.00 | 762 mm |
| Section width | 9.50 | 241 mm |
| Sidewall height | 7.50 | 190.5 mm |
| Circumference | 94.2 | 2,394 mm |
| Revolutions per mile (calculated, unloaded) | 672.3 | 418 per km |
| Revolutions per mile (published by manufacturers) | 698–705 | 434–438 per km |
| Approved wheel width | 6.0–8.5 | 152–216 mm |
Speedometer error after switching to 30×9.50R15
Questions about 30×9.50R15
What is 30×9.50R15 in inches?
30.00 inches tall, 9.50 inches wide, on a 15-inch wheel. Manufacturers publish 29.50–29.76 inches for the 3 tires listed here.
How much does a 30×9.50R15 tire weigh?
Between 38.9 lb and 46.1 lb for the 3 tires listed here. The lightest is the BFGoodrich All-Terrain T/A KO3 (LT C); the heaviest is the BFGoodrich Mud-Terrain T/A KM3 (LT C).
What wheel width do I need for 30×9.50R15?
Manufacturers approve 6.0–8.5″ wide wheels for this size.
How many revolutions per mile does a 30×9.50R15 make?
Published figures run 698–705 revolutions per mile. The calculated figure is 672.3, but manufacturers measure the tire under load, where it rolls on a smaller radius.
How much taller is 30×9.50R15 than 265/70R15?
0.39 inches taller on paper (30.00″ vs 29.61″), which raises the axle about 0.20″. Your speedometer will read about 1.3% slow.