Tires
Tires

How Do I Compare the Diameter Of Light Truck Tire Sizes?

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While most passenger car and truck tires follow a similar sizing convention, Light truck tires sometimes (especially in the larger off-road sizes) utilize flotation sizing, which can make comparing sizes somewhat less obvious. While the tire's spec page or tire size calculator will give specific overall dimensions, the provided tire sizing chart below is designed to give a broad view of the differences in tire sizes of light truck tires at a glance.

Note: Tire diameters provided are typical for the tire size. However, different tread designs and molded tread depths can result in slightly different overall tire diameters.

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
4242x14.50R17LT
4040x13.50R20LT
40x13.50R18LT
40x13.50R17LT
38-1/238.5x14.50R20LT
38LT395/70R16LT395/65R1838x14.00R24LT
38x15.50R20LT
38x15.50R18LT
38x15.50R15LT
37LT325/80R1637x14.00R24LT
37x13.50R22LT
37x13.50R20LT
37x13.50R18LT
37x13.50R17LT
37x12.50R17LT
36LT375/60R1836x15.50R20LT
36x15.50R15LT
35LT305/70R18LT285/65R2035x13.50R20LT
LT285/75R18LT325/65R18
34-1/2LT315/70R17LT275/65R2035X12.50R20LT
LT315/75R1635x12.50R18LT
35x12.50R17LT
35X12.50R15LT
34LT305/70R17
33-1/2LT255/85R16LT275/70R18LT285/60R20LT305/55R20
33LT285/70R17LT325/60R18LT325/50R2033x12.50R20LT
LT305/70R16LT305/65R17LT375/50R1833x12.50R18LT
LT285/75R16LT295/65R18LT375/55R1633x12.50R17LT
33x15.50R15LT
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

Verify tire specifications and dimensions of tires by viewing the SPECS page of tires you are interested in. While this chart can't guarantee a specific tire will fit your vehicle, it can give you an idea of the available tire sizes with the same approximate overall diameter. Make sure to see Light Truck Fitment Formula for more info on important things to consider when selecting truck tire sizes. Always verify that the load capacity of the new tire is sufficient for your vehicle.

The approximate width of metric sized tires can be converted into inches by dividing the branded Section Width in millimeters by 25.4; for example LT285/60R16 285 รท 25.4 = 11.2"

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