Truck Tire Size Chart And Sizing Guide

by Egle Goleckyte

Tires are typically constructed of tough rubbers wrapped around a metallic rim and filled with pressurized air. They come in a range of sizes, and a truck tire size chart can assist you in determining the appropriate size for your vehicle. A good-sized truck tire will improve safety, performance and grip during the long rides.

The tires are the most vital portions of the car that touch the ground; they are designed to hold the vehicle’s total weight as part of the wheel. Tires are also designed to absorb shocks and vibrations and transmit traction controls, speed, and braking forces. They also change the motion’s direction.

car tire size how to read measurements explained
truck tire size explained

Truck Tire Size Chart

Light Truck tire sizes

Tire diameters provided are typical for the tire size.

Approx. Tire Diameter
(in Inches)		P-Metric and European MetricLT-MetricLight Truck
82-series and 80-series75-series and 70-series65-series and 60-series55-series and lower85-series and 80-series75-series and 70-series65-series and 60-series55-series and lowerFlotationNumeric
4242×14.50R17LT
4040×13.50R20LT
40×13.50R18LT
40×13.50R17LT
38-1/238.5×14.50R20LT
38LT395/70R16LT395/65R1838×14.00R24LT
38×15.50R20LT
38×15.50R18LT
38×15.50R15LT
37LT325/80R1637×14.00R24LT
37×13.50R22LT
37×13.50R20LT
37×13.50R18LT
37×13.50R17LT
37×12.50R17LT
36LT375/60R1836×15.50R20LT
36×15.50R15LT
35LT305/70R18LT285/65R2035×13.50R20LT
LT285/75R18LT325/65R18
34-1/2LT315/70R17LT275/65R2035X12.50R20LT
LT315/75R1635×12.50R18LT
35×12.50R17LT
35X12.50R15LT
34LT305/70R17
33-1/2LT255/85R16LT275/70R18LT285/60R20LT305/55R20
33LT285/70R17LT325/60R18LT325/50R2033×12.50R20LT
LT305/70R16LT305/65R17LT375/50R1833×12.50R18LT
LT285/75R16LT295/65R18LT375/55R1633×12.50R17LT
33×15.50R15LT
32-1/2LT275/70R17LT305/60R18LT375/55R1633X12.50R16.5LT
LT255/75R17LT275/65R18
LT315/70R1533X12.50R15LT
32LT265/70R17LT345/55R17
LT245/75R17
LT265/75R16
31-1/2265/70R17285/60R18LT235/85R16LT265/75R1632X11.50R15LT7.50R16LT
265/75R16
31275/70R16285/55R18LT215/85R16LT245/70R17LT345/55R16
LT245/75R16
30-1/2265/70R16285/60R17LT285/70R15LT325/60R1531X10.50R16.5LT9.50R16.5LT
265/75R15265/65R1731X11.50R15LT
31X10.50R15LT
30255/70R16275/60R17
255/65R17
29-1/2245/70R16265/60R17LT225/75R16LT285/60R16LT315/55R1630X9.50R15LT8.75R16.5LT
265/70R15245/65R177.00R15LT
29205R16235/70R16255/60R17255/55R18LT235/75R15
205/80R16255/70R15255/65R16
235/75R15
28-1/2225/70R16LT225/75R1529X9.50R15LT8.00R16.5LT
245/70R15
225/75R15
28215/70R16275/60R15255/55R17LT245/65R15
27-1/2225/70R15LT215/75R15
215/75R15
27205/75R15255/60R15255/50R17LT205/75R15
225/60R16305/50R15
215/65R16
26-1/2225/70R14245/60R15295/50R15LT195/75R1527X8.50R14LT
195/75R15
26185R14195/70R15235/60R15
215/70R14215/65R15
205/75R14
25-1/2205/70R14225/60R15
195/75R14
WHEEL SIZEWHEEL DIAMETER
21’’22’’23’’24’’
13’’185/60R13 = 21.7×7.3R13   215/50R13 = 21.5X8.5R13   225/45R13 = 21×8.9R13   225/50R13 = 21.9×8.9R13   255/40R13 = 21x10R13  155/80R13 = 22.8×6.1R13   175/70R13 = 22.6×6.9R13   205/60R13 = 22.7×8.1R13   22X8R13  165/80R13 = 23.4X6.5R13 185/70R13 = 23.2×7.3R13  175/80R13 = 24×6.9R13 185/80R13 = 24.7×7.3R13 24.5X8R13 24.5X9R13  
WHEEL SIZEWHEEL DIAMETER
19’’20’’21’’22’’23’’24’’25’’26’’27’’28’’30’’
14’’105/70R14 = 19.8X4.1R14115/70R14 = 20.3X4.5R14 125/70R14 = 20.9X4.9R14  165/55R14 = 21.1X6.5R14135/80R14 = 22.5X5.3R14 165/65R14 = 22.4×6.5R14 185/55R14 = 22×7.3R14 185/60R14 = 22.7×7.3R14 195/55R14 = 22.4×7.7R14 205/50R14 =22.1×8.1R14 205/55R14 =22.9×8.1R14 225/50R14 =22.9×8.9R14  175/65R14 = 23×6.9R14 175/70R14 = 23.6×6.9R14 185/65R14 = 23.5×7.3R14 195/60R14 = 23.2×7.7R14 205/60R14 = 23.7×8.1R14  185/70R14 = 24.2×7.3R14 185/75R14 = 24.9X7.3R14 195/65R14 = 24×7.7R14 195/70R14 = 24.7×7.7R14 215/60R14 = 24.2×8.5R14 225/60R14 = 24.6×8.9R14  185R14 = 25.7×7.3R14 195/75R14 = 25.5×7.7R14 205/70R14 = 25.3×8.1R14 215/70R14 = 25.9×8.5R14 235/60R14 = 25.1×9.3R14 245/60R14 = 25.6×9.6R14  195R14 = 26.2×7.8R14 205/75R14 = 26.1×8.1R14 215/75R14 = 26.7×8.5R14 225/70R14 = 26.4×8.9R14 26X8.5R14  205R14 = 27×8.2R14 27X8.5R14 27X9.5R14  28X10R1430X10R14
WHEEL SIZEWHEEL DIAMETER
20’’21’’22’’23’’24’’25’’
15’’105/70R15 = 20.8X4.1R15115/70R15 = 21.3X4.5R15   125/70R15 = 21.9X4.9R15   165/50R15 = 21.5X6.5R15   195/45R15 = 21.9×7.7R15125/80R15 = 22.9X4.9R15   145/65R15 = 22.4×5.7R15   155/60R15 = 22.3×6.1R15   165/60R15 = 22.8×6.5R15   175/55R15 = 22.6×6.9R15   195/50R15 = 22.7×7.7R15   22X8R15   22.5X4.5R15 245/40R15 =   22.7X9.6R15 275/35R15 =   22.6×10.8R15135/80R15 = 23.5X5.3R15   165/65R15 = 23.4X6.5R15   175/60R15 = 23.3×6.9R15   185/55R15 = 23×7.3R15   185/60R15 = 23.7×7.3R15   195/55R15 = 23.4×7.7R15   205/50R15 = 23.1×8.1R15   205/55R15 = 23.9×8.1R15   225/45R15 = 23×8.9R15   225/50R15 = 23.9×8.9R15   295/35R15 = 23.1X11.6R15  135/90R15 = 24.6X5.3R15   155/80R15 = 24.8X6.1R15   175/65R15 = 24×6.9R15   185/65R15 = 24.5×7.3R15   195/60R15 = 24.2×7.7R15   205/60R15 = 24.7×8.1R15   225/55R15 = 24.7×8.9R15   235/50R15 = 24.3×9.3R15   24X4.5R15 24X5R15   24.5X8R15   245/50R15 = 24.6×9.6R15   345/35R15 = 24.5×13.6R15165/80R15 = 25.4X6.5R15   185/70R15 = 25.2×7.3R15   195/65R15 = 25×7.7R15   195/70R15 = 25.7×7.7R15   205/65R15 = 25.5×8.1R15   215/60R15 = 25.2×8.5R15   225/60R15 = 25.6×8.9R15   265/50R15 = 25.4X10.4R15   275/50R15 = 25.8×10.8R15
WHEEL SIZEWHEEL DIAMETER
26’’27’’28’’29’’30’’31’’
15’’205/70R15 = 26.3×8.1R15   215/65R15 = 26×8.5R15   215/70R15 = 26.9×8.5R15   235/60R15 = 26.1×9.3R15   245/60R15 = 26.6×9.6R15 26X10R15   26X10.5R15   26X11.5R15   26X6R15   26X7.5R15   26X8R15   26X8.5R15   295/50R15 =26.6×11.6R15205/75R15 = 27.1×8.1R15   215/75R15 = 27.7×8.5R15   225/70R15 = 27.4×8.9R15   255/60R15 = 27x10R15   27X10.5R15 27X9.5R15 27.5X4.5R15 295/55R15 =   27.8X11.6R15 325/50R15 =   27.8×12.8R15 E78-15 = 27×6.5R15225/75R15 = 28.3×8.9R15   235/70R15 =28×9.3R15   235/75R15 = 28.9×9.3R15   245/70R15 = 28.5X9.6R15   255/65R15 = 28.1x10R15   275/60R15 = 28×10.8R15   28X10.5R15   28X11.5R15   28X12.5R15   28X13.5R15   28X4.5R15   28X7.5R15   28X9R15215/85R15 = 29.4X8.5R15   255/70R15 = 29.1x10R15   265/70R15 = 29.6×10.4R15   29X10.5R15   29X11.5R15   29X12.5R15 29X15.5R15   29X18R15   29X18.5R15   29X4.5R15   29X8.5R15   29.5X11.5R15   29.5X13.5R15   29.5X9R15   315/60R15 = 29.9×12.4R15  255/75R15 = 30.1x10R15   265/75R15 = 30.6×10.4R15   295/65R15 = 30.1×11.6R15   30X10R15   30X10.5R15   30X11.5R15 30X12.5R15   30X13.5R15   30X7R15   30X9R15   30X9.5R1531X10.5R15   31X11R15   31X11.5R15   31X12.5R15   31X13R15   31X13.5R15   31X14.5R15   31X16.5R15   31X18R15   31X18.5R15   31X9.5R15
WHEEL SIZEWHEEL DIAMETER
32’’33’’34’’35’’36’’37’’38’’39’’
15’’32X10.5R15   32X11.5R15   32X14R15   32X16R15   32X17.5R15   32X18.5R15   32X9.5R1533X10.5R15   33X11.5R15   33X12.5R15   33X13R15   33X13.5R15   33X14R15   33X14.5R15   33X15.5R15   33X16.5R15   33X19.5R15   33X21.5R15   33X9R15   33X9.5R1534X10.5R15   34X12.5R15   34X9.5R1535X10.5R15   35X12.5R15   35X13.5R15   35X14.5R15   35X15R15   35X15.5R15   35X16R1536X12.5R15   36X13.5R15   36X14.5R1537X12.5R15   37X13R15   37X13.5R15   37X14R15   37X14.5R15    38X12.5R15   38X13R15   38X14.5R15   38X15.5R15   38.5X11R15   38.5X13.5R1 5   38.5X14.5R15   38.5X15R1539X13.5R15 39.5X13.5R15 39.5X15R15 39.5X18R15
Inch tire sizeWHEEL DIAMETER IN INCHES
40’’42’’44’’47’’
15’’40X16R1542X14R15 42X15R15   42.5X13.5R1544X18.5R15 44X19.5R15   44X21R1547X17R15
WHEEL SIZEDIAMETER OF THE WHEEL 
16.5’’29’’30’’32’’33’’35’’36’’37’’38’’42’’44’’
 8.75R16.5 = 29.5×8.8R16.59.5R16.5 = 30.6×9.5R16.532X12R16.533X11.5R16.5   33X12.5R16.5   33X14R16.5   33X14.5R16.5   33X15.5R16.535X12.5R16.5   35X14.5R16.5   35X15R16.5   35X15.5R16.5   35X16R16.5   35X9.5R16.536X12.5R16.5   36X13.5R16.5   36X14.5R16.5   36X16R16.537″ Diameter   37X12.5R16.5   37X13R16.5   37X14R16.538X11R16.5   38X12.5R16.5   38X15.5R16.5   38.5X11R16.5   38.5X13.5R16.5   38.5X14.5R16.5   38.5X15R16.5   38.5X16R16.542X14R16.5   42X15R16.5   42.5X13.5R16.544X18.5R16.5   44X18.5R16.5   44X19.5R16.5   44X21R16.5
SIZE TIREDIAMETER OF TIRE IN INCHES
25’’14’’15’’16’’17’’18’’19’’20’’
 185R14 =   25.7×7.3R14   195/75R14 =   25.5×7.7R14   205/70R14 =   25.3×8.1R14   215/70R14 =   25.9×8.5R14   235/60R14 =   25.1×9.3R14   245/60R14 =   25.6×9.6R14165/80R15 = 25.4X6.5R15   185/70R15 = 25.2×7.3R15   195/65R15 = 25×7.7R15   195/70R15 = 25.7×7.7R15   205/65R15 = 25.5×8.1R15   215/60R15 = 25.2×8.5R15   225/60R15 = 25.6×8.9R15   265/50R15 = 25.4X10.4R15   275/50R15 = 25.8×10.8R15135/90R16 = 25.6X5.3R16   145/80R16 = 25.1X5.7R16   195/60R16 = 25.2×7.7R16   205/60R16 = 25.7×8.1R16   215/55R16 = 25.3×8.5R16   225/55R16 = 25.7×8.9R16   245/50R16 = 25.6×9.6R16   265/45R16 = 25.4X10.4R16   275/45R16 = 25.7×10.8R16   315/40R16 = 25.9X12.4R16115/95R17 = 25.6X4.5R17   135/80R17 = 25.5X5.3R17   145/70R17 = 25X5.7R17   155/70R17 = 25.5X6.1R17   205/50R17 = 25.1×8.1R17   205/55R17 = 25.9×8.1R17   215/50R17 = 25.5X8.5R17   225/45R17 = 25×8.9R17   225/50R17 = 25.9×8.9R17   235/45R17 = 25.3×9.3R17   245/45R17 = 25.7×9.6R17   255/40R17 = 25x10R17   265/40R17 = 25.3×10.4R17   275/40R17 = 25.7×10.8R17   295/35R17 = 25.1×11.6R17   315/35R17 = 25.7×12.4R17135/70R18 = 25.4X5.3R18   155/60R18 = 25.3X6.1R18   215/45R18 = 25.6×8.5R18   225/40R18 = 25.1×8.9R18   235/40R18 = 25.4×9.3R18   245/40R18 = 25.7×9.6R18   255/35R18 = 25x10R18   265/35R18 = 25.3×10.4R18   275/35R18 = 25.6×10.8R18   285/35R18 = 25.9×11.2R18   295/30R18 = 25×11.6R18   305/30R18 = 25.2x12R18   315/30R18 = 25.4×12.4R18   335/30R18 = 25.9×13.2R18115/70R19 = 25.3X4.5R19   125/70R19 = 25.9X4.9R19   225/35R19 = 25.2×8.9R19   235/35R19 = 25.5×9.3R19   245/35R19 = 25.8×9.6R19   255/30R19 = 25x10R19   265/30R19 = 25.3×10.4R19   275/30R19 = 25.5×10.8R19   285/30R19 = 25.7×11.2R19   315/25R19 = 25.2×12.4R19215/30R20 = 25.1X8.5R20   225/30R20 = 25.3×8.9R20   235/30R20 = 25.6×9.3R20   245/30R20 = 25.8×9.6R20   275/25R20 = 25.4X10.8R20   285/25R20 = 25.6×11.2R20   295/25R20 = 25.8×11.6R20

How to Read a Truck Tire Size

Tires are measured using two different systems: metric and flotation. The metric system, which is most common tire measurement type. It is an alphanumeric tire code, made up of a sequence of letters and numbers, and each number and letter on a tire is significant and relates to the tire’s size, kind, design, or special features. This section will show you how to read the information on tires.

Here is an example of a metric tire size: P205/65R16

The First Letter: The first letter indicates the class of tire. There are four classes of tires in general, and this should not be confused with the tire type.

  • P metric tire: This denotes that the tire was created with passenger vehicles in mind. A passenger vehicle may be a minivan, tiny pickup truck, sedan, SUV, or a car
  • LT: LT means light truck tire. This indicates that the tire was created for light trucks, vehicles built to transport medium loads.
  • ST: “Special trailers” is abbreviated as ST. It is used to identify tires designed to carry heavy loads. Heavy-duty cars, utility trailers, and boat trailers all require tires of this classification.
  • T: This is the designation for temporary tires or a replacement tire that should not be driven faster than 50 mph and should only be used when driving up to a garage stop. Cheaper tires usually carry this code.

If this letter is missing, the tire is almost certainly a passenger tire.

The three-digit number: The 3-digit number following the first letter represents the tire width. It (205) specifies the width of the tire in millimeters from sidewall height to the tire sidewall as viewed from the front.

The Two-digit Number: The following number represents the aspect ratio or tire profile size. lower aspect ratio tires offer better performance and average traction than higher aspect ratio tires.

The Next Letter: The following letter denotes the type of tire construction. The following are the four different tire construction type:

  • R: A tire with an R rating is a radial tire. at least 98% of all manufactured tires are radial tires.
  • D: This is an abbreviation for diagonal ply or bias-ply
  • B: This means belt constructions
  • F: F means that it is a run-flat tire

The last number: The last number on the metric measurements of tire stands for the tire diameter.

Other important information to check on a tire include:

  • The tire speed ratings/speed rating
  • The maximum speed capability
  • Maximum load capability
  • The alternate tire sizes
  • Tire load
  • Tire manufacturers
  • Rim diameter
  • Rim size
  • Tread design

Click here for more information on how to read tire sizes.

Truck tires sizing explained (video)

Truck Tire sizes explained by Stanley Dedanek

Conclusion

We hope you found this article on the truck tire size chart helpful. Remember that tires are one of the essential components of any vehicle, wrong sizing can cause tire failure and vehicle accidents. Thus, it is vital to get the correct sizing.  

We love to hear from you, so please leave a comment in the section below, and we will get back to you as soon as possible.

Picture in this post by milan degraeve on Unsplash

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