tireheight.com

235/75R15 in inches

A 235/75R15 tire is 28.9″ tall and 9.3″ wide, and fits a 15″ wheel. In inches it is written 28.9×9.3R15.

Diameter28.88″
Width9.25″
Sidewall6.94″
235/75R15 drawn to scale: 28.88 inch diameter, 6.94 inch sidewall, 15 inch wheel, 9.25 inch tread width15″ wheel6.94″28.88″ overall9.25″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 235/75R15 tires really are

Heights published by BFGoodrich, General, Mickey Thompson and Toyo for all 13 tires in this size. Their published revolutions per mile work out to 28.0–28.2″ under load (below).

Real 235/75R15 tires measure 28.80–29.09″, against 28.88″ from the size code. They run both taller and shorter than the size code.

  1. Toyo Open Country A/T III · 228.86–29.09″ +0.22″
  2. BFGoodrich All-Terrain T/A KO328.90″ +0.02″
  3. BFGoodrich Trail-Terrain T/A28.90″ +0.02″
  4. BFGoodrich Trail-Terrain T/A+28.90″ +0.02″
  5. General Grabber A/TX28.90″ +0.02″
  6. General Grabber HTS28.90″ +0.02″
  7. Toyo Celsius28.86″ −0.02″
  8. Toyo Celsius II28.86″ −0.02″
  9. Toyo Extensa A/S II28.86″ −0.02″
  10. Toyo M-5528.86″ −0.02″
  11. Toyo Open Country H/T II28.86″ −0.02″
  12. Mickey Thompson Baja Boss A/T28.80″ −0.08″
Each bar runs from the size code's 28.88″ (the orange line) to the model's published height. The track spans 1.0″. Where a model comes in several load ranges, the darker part shows its range of heights; the number after the name is how many versions it comes in.
Height under load28.0–28.2″

Published revs per mile (714–721) mean the tire rolls like a 28.0–28.2″ tire on the vehicle. Use this for speedometer calibration.

Weight spread29.1–43.4 lb

The lightest (Toyo Celsius, SL) is 14.3 lb lighter per corner than the heaviest (BFGoodrich All-Terrain T/A KO3, LT D).

13 tires in 235/75R15

Sort by the spec you care about.

LoadRevs/miSource
Toyo CelsiusAll-weatherSL · 105S28.8629.111.32,039720Spec page
General Grabber HTSTouringSL · 105T28.9029.512.02,039719Spec page
Toyo Celsius IITouringSL · 105S28.8629.611.62,039720Spec page
Toyo Extensa A/S IIAll-seasonSL · 105T28.8630.511.62,028720Spec page
Toyo Open Country A/T IIIAll-terrainXL · 108T28.8632.013.02,183720Spec page
Toyo Open Country H/T IIHighwayXL · 109T28.8632.811.82,271720Spec page
BFGoodrich Trail-Terrain T/AAll-terrainXL · 109T28.9035.012.52,271721Spec page
BFGoodrich Trail-Terrain T/A+XL · 109T28.9035.712.52,271721Spec page
Mickey Thompson Baja Boss A/TAll-terrainXL · 109T28.8036.016.02,271–Spec page
General Grabber A/TXAll-terrainLT C · 104S28.9036.317.01,985719Spec page
Toyo Open Country A/T IIIAll-terrainLT C · 104/101S29.0936.816.01,985714Spec page
Toyo M-55CommercialLT C · 104/101Q28.8637.017.61,985720Spec page
BFGoodrich All-Terrain T/A KO3All-terrainLT D · 110S28.9043.415.02,335721Spec page

Is 235/75R15 a 29-inch tire?

≈29″

Yes. The size code works out to 28.88″, and the 13 tires here publish 28.80–29.09″, so people call it a 29.

All 29-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 235/75R15Difference
235/70R1527.95-0.93″-3.2%
275/60R1527.99-0.89″-3.1%
225/75R1528.29-0.59″-2.0%
235/70R1628.95+0.07″+0.3%
29×11.00R1429.00+0.12″+0.4%
29×9.00R1429.00+0.12″+0.4%
255/65R1629.05+0.17″+0.6%
255/70R1529.06+0.18″+0.6%
265/70R1529.61+0.73″+2.5%
30×10.00R1530.00+1.12″+3.9%

How to read 235/75R15

How to read any tire size

235/75R15 109T as printed on the tire sidewall, with each part numbered235/75R15 109T123456
How 235/75R15 109T is printed on the sidewall. It's the most common code among the 13 tires here (4 of them); tires in this size come in other load and speed ratings too.
1235Section width

235 mm across the widest point, or 9.25 inches. Every 235 size

275Aspect ratio

A percentage, not a measurement: the sidewall is 75% as tall as the tire is wide, which is 176.3 mm or 6.94 inches.

3RConstruction

Radial construction.

415Wheel diameter

Mounts on a 15-inch wheel. Approved wheel widths run 6.0″ to 8.0″.

5109Load index

Each tire carries up to 2,271 lb (1,030 kg) at its maximum pressure.

6TSpeed rating

Rated for up to 118 mph sustained.

XLExtra load

Printed after the size. In this size the XL tires carry up to 2,271 lb each and the standard-load tires up to 2,039 lb, as published.

SpecificationInchesMetric
Overall diameter28.88733 mm
Section width9.25235 mm
Sidewall height6.94176.3 mm
Circumference90.72,304 mm
Revolutions per mile (calculated, unloaded)698.4434 per km
Revolutions per mile (published by manufacturers)714–721444–448 per km
Approved wheel width6.0–8.0152–203 mm

Speedometer error after switching to 235/75R15

Your actual speed– mph

Questions about 235/75R15

What is 235/75R15 in inches?

28.88 inches tall, 9.25 inches wide, on a 15-inch wheel. Written in inches, that is roughly 28.9×9.3R15.

How much does a 235/75R15 tire weigh?

Between 29.1 lb and 43.4 lb for the 13 tires listed here. The lightest is the Toyo Celsius (SL); the heaviest is the BFGoodrich All-Terrain T/A KO3 (LT D).

What wheel width do I need for 235/75R15?

Manufacturers approve 6.0–8.0″ wide wheels for this size.

How many revolutions per mile does a 235/75R15 make?

Published figures run 714–721 revolutions per mile. The calculated figure is 698.4, but manufacturers measure the tire under load, where it rolls on a smaller radius.

What is the difference between P235/75R15 and LT235/75R15?

Passenger tires (9 here) are built for passenger loads, with max loads of 2028–2271 lb. Light-truck tires (4 here) come in heavier load ranges with max loads of 1985–2335 lb, and are usually heavier with deeper tread.

How much taller is 235/75R15 than 225/75R15?

0.59 inches taller on paper (28.88″ vs 28.29″), which raises the axle about 0.30″. Your speedometer will read about 2.1% slow.