tireheight.com

235/85R16 in inches

A 235/85R16 tire is 31.7″ tall and 9.3″ wide, and fits a 16″ wheel. In inches it is written 31.7×9.3R16.

Diameter31.73″
Width9.25″
Sidewall7.86″
235/85R16 drawn to scale: 31.73 inch diameter, 7.86 inch sidewall, 16 inch wheel, 9.25 inch tread width16″ wheel7.86″31.73″ overall9.25″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 235/85R16 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 12 tires in this size. Their published revolutions per mile work out to 30.7–31.1″ under load (below).

Real 235/85R16 tires measure 31.70–31.97″, against 31.73″ from the size code. They run both taller and shorter than the size code.

  1. Toyo M-5531.97″ +0.24″
  2. Toyo Open Country M/T31.96″ +0.23″
  3. Toyo Open Country WLT131.85″ +0.12″
  4. Toyo Open Country A/T III31.73″ +0.00″
  5. Toyo Open Country C/T31.73″ +0.00″
  6. Toyo Open Country H/T II31.73″ +0.00″
  7. BFGoodrich HD Pro T/A31.73″ +0.00″
  8. BFGoodrich All-Terrain T/A KO331.70″ −0.03″
  9. BFGoodrich HD-Terrain T/A KT31.70″ −0.03″
  10. General Grabber A/TX31.70″ −0.03″
  11. General Grabber HD31.70″ −0.03″
  12. Michelin Agilis CrossClimate 231.70″ −0.03″
Each bar runs from the size code's 31.73″ (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 load30.7–31.1″

Published revs per mile (648–656) mean the tire rolls like a 30.7–31.1″ tire on the vehicle. Use this for speedometer calibration.

Weight spread40.4–55.1 lb

The lightest (BFGoodrich HD Pro T/A, LT E) is 14.7 lb lighter per corner than the heaviest (Toyo Open Country C/T, LT E).

12 tires in 235/85R16

Sort by the spec you care about.

LoadRevs/miSource
BFGoodrich HD Pro T/ACommercialLT E · 120/116R31.7340.413.03,042656Spec page
General Grabber HDCommercialLT E · 120R31.7042.614.03,085655Spec page
Toyo Open Country A/T IIIAll-terrainLT E · 120/116R31.7343.516.03,042655Spec page
Toyo Open Country H/T IIHighwayLT E · 120/116S31.7344.314.53,042655Spec page
Toyo Open Country WLT1WinterLT E · 120/116Q31.8544.516.13,042652Spec page
Michelin Agilis CrossClimate 2CommercialLT E · 120/116R31.7045.114.03,085656Spec page
General Grabber A/TXAll-terrainLT E · 120S31.7047.516.03,085655Spec page
Toyo M-55CommercialLT E · 120/116Q31.9749.217.53,042650Spec page
BFGoodrich All-Terrain T/A KO3All-terrainLT E · 120S31.7049.615.03,042656Spec page
BFGoodrich HD-Terrain T/A KTLT E · 120Q31.7050.718.03,042656Spec page
Toyo Open Country M/TMud-terrainLT E · 120/116P31.9654.418.43,042648Spec page
Toyo Open Country C/TCommercialLT E · 120/116Q31.7355.118.33,042655Spec page

Is 235/85R16 a 32-inch tire?

≈32″

Yes. The size code works out to 31.73″, and the 12 tires here publish 31.70–31.97″, so people call it a 32.

All 32-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 235/85R16Difference
275/70R1631.16-0.57″-1.8%
245/75R1731.47-0.26″-0.8%
265/70R1731.61-0.12″-0.4%
265/75R1631.65-0.08″-0.2%
235/80R1731.80+0.07″+0.2%
32×10.00R1532.00+0.27″+0.9%
32×11.50R1532.00+0.27″+0.9%
32×9.50R1532.00+0.27″+0.9%
255/75R1732.06+0.33″+1.0%
305/70R1632.81+1.08″+3.4%

How to read 235/85R16

How to read any tire size

LT235/85R16 120/116R as printed on the tire sidewall, with each part numberedLT235/85R16 120/116R1234567
How LT235/85R16 120/116R is printed on the sidewall. It's the most common code among the 12 tires here (3 of them); tires in this size come in other load and speed ratings too.
1LTLight truck

Marks a light truck (LT) tire.

2235Section width

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

385Aspect ratio

A percentage, not a measurement: the sidewall is 85% as tall as the tire is wide, which is 199.8 mm or 7.86 inches.

4RConstruction

Radial construction.

516Wheel diameter

Mounts on a 16-inch wheel. Approved wheel widths run 6.0″ to 7.5″.

6120/116Load index

Each tire carries up to 3,085 lb (1,400 kg) on its own, or 2,756 lb (1,250 kg) each when paired on a dual rear axle.

7RSpeed rating

Rated for up to 106 mph sustained.

ELoad range

Printed separately as "LOAD RANGE E": a 10-ply rating, inflated up to 80 psi (standard load-range table). The load range E tires here carry up to 3,085 lb each, as published.

SpecificationInchesMetric
Overall diameter31.73806 mm
Section width9.25235 mm
Sidewall height7.86199.8 mm
Circumference99.72,532 mm
Revolutions per mile (calculated, unloaded)635.6395 per km
Revolutions per mile (published by manufacturers)648–656403–408 per km
Approved wheel width6.0–7.5152–191 mm

Speedometer error after switching to 235/85R16

Your actual speed– mph

Questions about 235/85R16

What is 235/85R16 in inches?

31.73 inches tall, 9.25 inches wide, on a 16-inch wheel. Written in inches, that is roughly 31.7×9.3R16.

How much does a 235/85R16 tire weigh?

Between 40.4 lb and 55.1 lb for the 12 tires listed here. The lightest is the BFGoodrich HD Pro T/A (LT E); the heaviest is the Toyo Open Country C/T (LT E).

What wheel width do I need for 235/85R16?

Manufacturers approve 6.0–7.5″ wide wheels for this size.

How many revolutions per mile does a 235/85R16 make?

Published figures run 648–656 revolutions per mile. The calculated figure is 635.6, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 235/85R16 than 265/75R16?

0.08 inches taller on paper (31.73″ vs 31.65″), which raises the axle about 0.04″. Your speedometer will read about 0.2% slow.