tireheight.com

235/60R18 in inches

A 235/60R18 tire is 29.1″ tall and 9.3″ wide, and fits a 18″ wheel. In inches it is written 29.1×9.3R18.

Diameter29.10″
Width9.25″
Sidewall5.55″
235/60R18 drawn to scale: 29.10 inch diameter, 5.55 inch sidewall, 18 inch wheel, 9.25 inch tread width18″ wheel5.55″29.10″ overall9.25″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 235/60R18 tires really are

Heights published by BFGoodrich, General, Michelin and Toyo for all 35 tires in this size. Their published revolutions per mile work out to 28.2″ under load (below).

Real 235/60R18 tires measure 29.00–29.10″, against 29.10″ from the size code. They run both taller and shorter than the size code.

  1. BFGoodrich All-Terrain T/A KO329.10″ −0.00″
  2. BFGoodrich Trail-Terrain T/A29.10″ −0.00″
  3. BFGoodrich Trail-Terrain T/A+29.10″ −0.00″
  4. General AltiMAX Arctic X29.10″ −0.00″
  5. General AltiMAX RT45 · 329.10″ −0.00″
  6. General AltiMAX365 AW29.10″ −0.00″
  7. General Grabber H/T29.10″ −0.00″
  8. Michelin CrossClimate229.10″ −0.00″
  9. Michelin e.Primacy All Season29.10″ −0.00″
  10. Michelin Latitude Sport 3 · 429.10″ −0.00″
  11. Michelin Latitude Tour HP · 229.10″ −0.00″
  12. Michelin Pilot Sport 4 SUV · 229.10″ −0.00″
  13. Michelin Primacy MXM429.10″ −0.00″
  14. Michelin Primacy Tour A/S29.10″ −0.00″
  15. Toyo Proxes G-Tour29.10″ −0.00″
  16. Toyo Celsius II29.09″ −0.01″
  17. Toyo Celsius Sport29.09″ −0.01″
  18. Toyo Extensa A/S II29.09″ −0.01″
  19. Toyo Observe G3-Ice29.09″ −0.01″
  20. Toyo Open Country A/T III29.09″ −0.01″
  21. Toyo Open Country H/T II29.09″ −0.01″
  22. Toyo OPEN COUNTRY Q/T29.09″ −0.01″
  23. Toyo Proxes ST III29.09″ −0.01″
  24. BFGoodrich Advantage Control · 229.09″ −0.01″
  25. Michelin X-Ice Snow29.09″ −0.01″
  26. Michelin X-Ice Snow+29.09″ −0.01″
  27. Michelin Defender229.00″ −0.10″
Each bar runs from the size code's 29.10″ (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 load28.2″

Published revs per mile (714–715) mean the tire rolls like a 28.2″ tire on the vehicle. Use this for speedometer calibration.

Weight spread27.1–45.1 lb

The lightest (General AltiMAX RT45, XL) is 18.0 lb lighter per corner than the heaviest (BFGoodrich All-Terrain T/A KO3, LT D).

35 tires in 235/60R18

Sort by the spec you care about.

LoadRevs/miSource
General AltiMAX RT45TouringXL · 107H29.1027.111.02,149714Spec page
General AltiMAX365 AWTouringXL · 107H29.1027.111.02,149714Spec page
General AltiMAX RT45TouringXL · 107V29.1027.211.02,149714Spec page
General AltiMAX RT45TouringXL · 107T29.1027.311.02,149714Spec page
Michelin Primacy MXM4TouringSL · 102V29.1027.39.51,874715Spec page
Michelin Primacy Tour A/STouringXL · 107V29.1027.59.02,149715Spec page
Michelin e.Primacy All SeasonTouringSL · 103V29.1027.68.51,929715Spec page
Michelin Pilot Sport 4 SUVPerformanceXL · 107W29.1028.09.52,149715Spec page
Michelin Pilot Sport 4 SUVPerformanceXL · 107W29.1028.39.52,149715Spec page
Michelin CrossClimate2All-seasonXL · 107V29.1028.410.02,149715Spec page
Michelin Latitude Sport 3PerformanceSL · 103W29.1028.48.51,929715Spec page
Michelin Latitude Sport 3PerformanceSL · 103W29.1028.78.51,929715Spec page
Michelin Latitude Tour HPAll-seasonSL · 103V29.1028.79.51,754715Spec page
Michelin Latitude Tour HPAll-seasonXL · 107V29.1028.99.51,954715Spec page
Michelin Latitude Sport 3PerformanceSL · 103V29.1029.18.51,929715Spec page
Michelin X-Ice Snow+WinterXL · 107H29.0929.210.52,149715Spec page
Michelin Defender2All-seasonXL · 107H29.0029.410.52,150715Spec page
Michelin X-Ice SnowWinterXL · 107T29.0929.410.52,149715Spec page
General AltiMAX Arctic XWinterXL · 107T29.1029.512.02,149714Spec page
Michelin Latitude Sport 3PerformanceSL · 103W29.1029.58.51,929715Spec page
Toyo Celsius IITouringXL · 107V29.0929.911.22,149714Spec page
Toyo Extensa A/S IIAll-seasonSL · 103H29.0930.111.61,929714Spec page
General Grabber H/THighwaySL · 103H29.1030.412.01,929714Spec page
Toyo Proxes ST IIIPerformanceXL · 107V29.0931.110.12,149714Spec page
Toyo Proxes G-TourXL · 107V29.1031.512.02,149714Spec page
Toyo Celsius SportPerformanceXL · 107V29.0931.710.62,149714Spec page
BFGoodrich Advantage ControlAll-seasonXL · 107V29.0931.710.52,149715Spec page
Toyo Open Country A/T IIIAll-terrainXL · 107T29.0932.913.02,149714Spec page
Toyo OPEN COUNTRY Q/TAll-seasonXL · 107V29.0933.112.02,149714Spec page
Toyo Open Country H/T IIHighwayXL · 107V29.0933.210.82,149714Spec page
BFGoodrich Advantage ControlAll-seasonXL · 107H29.0934.111.52,149715Spec page
Toyo Observe G3-IceWinterXL · 107T29.0934.413.12,149714Spec page
BFGoodrich Trail-Terrain T/AAll-terrainXL · 107H29.1035.612.52,150715Spec page
BFGoodrich Trail-Terrain T/A+XL · 107H29.1036.112.52,150715Spec page
BFGoodrich All-Terrain T/A KO3All-terrainLT D · 108S29.1045.115.02,205715Spec page

Is 235/60R18 a 29-inch tire?

≈29″

Yes. The size code works out to 29.10″, and the 35 tires here publish 29.00–29.10″, 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 235/60R18Difference
295/45R1828.45-0.65″-2.2%
245/55R1828.61-0.49″-1.7%
225/60R1828.63-0.47″-1.6%
235/65R1729.03-0.07″-0.3%
255/50R1929.04-0.06″-0.2%
255/55R1829.04-0.06″-0.2%
255/60R1729.05-0.06″-0.2%
285/45R1929.10-0.00″-0.0%
235/55R1929.18+0.07″+0.3%
245/60R1829.57+0.47″+1.6%

How to read 235/60R18

How to read any tire size

235/60R18 107V as printed on the tire sidewall, with each part numbered235/60R18 107V123456
How 235/60R18 107V is printed on the sidewall. It's the most common code among the 35 tires here (11 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

260Aspect ratio

A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 141.0 mm or 5.55 inches.

3RConstruction

Radial construction.

418Wheel diameter

Mounts on a 18-inch wheel. Approved wheel widths run 6.5″ to 8.5″.

5107Load index

Each tire carries up to 2,149 lb (975 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

XLExtra load

Printed after the size. In this size the XL tires carry up to 2,150 lb each and the standard-load tires up to 1,929 lb, as published.

SpecificationInchesMetric
Overall diameter29.10739 mm
Section width9.25235 mm
Sidewall height5.55141.0 mm
Circumference91.42,322 mm
Revolutions per mile (calculated, unloaded)693.0431 per km
Revolutions per mile (published by manufacturers)714–715444 per km
Approved wheel width6.5–8.5165–216 mm

Speedometer error after switching to 235/60R18

Your actual speed– mph

Questions about 235/60R18

What is 235/60R18 in inches?

29.10 inches tall, 9.25 inches wide, on a 18-inch wheel. Written in inches, that is roughly 29.1×9.3R18.

How much does a 235/60R18 tire weigh?

Between 27.1 lb and 45.1 lb for the 35 tires listed here. The lightest is the General AltiMAX RT45 (XL); the heaviest is the BFGoodrich All-Terrain T/A KO3 (LT D).

What wheel width do I need for 235/60R18?

Manufacturers approve 6.5–8.5″ wide wheels for this size.

How many revolutions per mile does a 235/60R18 make?

Published figures run 714–715 revolutions per mile. The calculated figure is 693.0, but manufacturers measure the tire under load, where it rolls on a smaller radius.

What is the difference between P235/60R18 and LT235/60R18?

Passenger tires (34 here) are built for passenger loads, with max loads of 1754–2150 lb. Light-truck tires (1 here) come in heavier load ranges with max loads of 2205 lb, and are usually heavier with deeper tread.

How much taller is 235/60R18 than 255/55R18?

0.06 inches taller on paper (29.10″ vs 29.04″), which raises the axle about 0.03″. Your speedometer will read about 0.2% slow.