Truck Tire Size Chart And Sizing Guide
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.
Truck Tire Size Chart
Light Truck tire sizes
Tire diameters provided are typical for the tire size.
|Approx. Tire Diameter|
|P-Metric and European Metric||LT-Metric||Light Truck|
|82-series and 80-series||75-series and 70-series||65-series and 60-series||55-series and lower||85-series and 80-series||75-series and 70-series||65-series and 60-series||55-series and lower||Flotation||Numeric|
|WHEEL SIZE||WHEEL DIAMETER|
|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 SIZE||WHEEL DIAMETER|
|14’’||105/70R14 = 19.8X4.1R14||115/70R14 = 20.3X4.5R14 125/70R14 = 20.9X4.9R14||165/55R14 = 21.1X6.5R14||135/80R14 = 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||28X10R14||30X10R14|
|WHEEL SIZE||WHEEL DIAMETER|
|15’’||105/70R15 = 20.8X4.1R15||115/70R15 = 21.3X4.5R15 125/70R15 = 21.9X4.9R15 165/50R15 = 21.5X6.5R15 195/45R15 = 21.9×7.7R15||125/80R15 = 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 = 22.6×10.8R15||135/80R15 = 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 = 24.5×13.6R15||165/80R15 = 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 SIZE||WHEEL DIAMETER|
|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 =26.6×11.6R15||205/75R15 = 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 = 27×6.5R15||225/75R15 = 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 28X9R15||215/85R15 = 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 30X9.5R15||31X10.5R15 31X11R15 31X11.5R15 31X12.5R15 31X13R15 31X13.5R15 31X14.5R15 31X16.5R15 31X18R15 31X18.5R15 31X9.5R15|
|WHEEL SIZE||WHEEL DIAMETER|
|15’’||32X10.5R15 32X11.5R15 32X14R15 32X16R15 32X17.5R15 32X18.5R15 32X9.5R15||33X10.5R15 33X11.5R15 33X12.5R15 33X13R15 33X13.5R15 33X14R15 33X14.5R15 33X15.5R15 33X16.5R15 33X19.5R15 33X21.5R15 33X9R15 33X9.5R15||34X10.5R15 34X12.5R15 34X9.5R15||35X10.5R15 35X12.5R15 35X13.5R15 35X14.5R15 35X15R15 35X15.5R15 35X16R15||36X12.5R15 36X13.5R15 36X14.5R15||37X12.5R15 37X13R15 37X13.5R15 37X14R15 37X14.5R15||38X12.5R15 38X13R15 38X14.5R15 38X15.5R15 38.5X11R15 38.5X13.5R1 5 38.5X14.5R15 38.5X15R15||39X13.5R15 39.5X13.5R15 39.5X15R15 39.5X18R15|
|Inch tire size||WHEEL DIAMETER IN INCHES|
|15’’||40X16R15||42X14R15 42X15R15 42.5X13.5R15||44X18.5R15 44X19.5R15 44X21R15||47X17R15|
|WHEEL SIZE||DIAMETER OF THE WHEEL|
|8.75R16.5 = 29.5×8.8R16.5||9.5R16.5 = 30.6×9.5R16.5||32X12R16.5||33X11.5R16.5 33X12.5R16.5 33X14R16.5 33X14.5R16.5 33X15.5R16.5||35X12.5R16.5 35X14.5R16.5 35X15R16.5 35X15.5R16.5 35X16R16.5 35X9.5R16.5||36X12.5R16.5 36X13.5R16.5 36X14.5R16.5 36X16R16.5||37″ Diameter 37X12.5R16.5 37X13R16.5 37X14R16.5||38X11R16.5 38X12.5R16.5 38X15.5R16.5 38.5X11R16.5 38.5X13.5R16.5 38.5X14.5R16.5 38.5X15R16.5 38.5X16R16.5||42X14R16.5 42X15R16.5 42.5X13.5R16.5||44X18.5R16.5 44X18.5R16.5 44X19.5R16.5 44X21R16.5|
|SIZE TIRE||DIAMETER OF TIRE IN INCHES|
|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||165/80R15 = 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||135/90R16 = 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 = 25.9X12.4R16||115/95R17 = 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 = 25.7×12.4R17||135/70R18 = 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 = 25.9×13.2R18||115/70R19 = 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 = 25.2×12.4R19||215/30R20 = 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)
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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4 thoughts on “Truck Tire Size Chart And Sizing Guide”
what is the difference between P225R20 225R20
Hello Jack, thanks for reaching out. “P” just means that they are tires meant for passenger cars. Euro-metric and P-metric tires of the same size (i.e. P225/60R20 & 225/60R20) are equivalent in their dimensions with slight differences in their load capacity calculations and inflation pressure tables.Hope this helped. Have a nice day !
Can you replace a 10R17.5 woth a 235/75r17.5
Hi Hans, It is generally not recommended to replace a tire with a tire that has a significantly different size than the original equipment tire.It is technically possible to replace a 10R17.5 tire with a 235/75R17.5 tire. However, it is essential to note that the 235/75R17.5 tire is a slightly different size than the 10R17.5 tire, and this may affect the performance and handling of the vehicle. Check your vehicles manual before replacing the tire. All the best, Pablo