2015 RAM ProMaster 3500 Tire Size
The original tire size for your 2015 RAM ProMaster 3500 is listed below. Tap on the box to view a color-coded explanation of the best RAM ProMaster 3500 tire size.
Trim Options:
(C-Type Tires)
225/75R16C 121
Simplified Size: 225-75-16
Simplified size is useful for shopping and buying tires.
The original tire size for your 2015 RAM ProMaster 3500 is 225/75R16C 121R. A color-coded explanation of the 2015 RAM ProMaster 3500's tire size is shown below.
C | This letter denotes the intended use of the tire.
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225 | This number indicates that your tire has a width of 225 millimeters. | ||||||
16 | The tire size was designed to fit rims or wheels that are 16 inches in diameter. | ||||||
121 | This tire has a load index of 121, which means it's capable of carrying a load of 3190 pounds (1450 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
75 | This number means that your tire has an aspect ratio of 75%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 75% of the width. In this case, the sidewall height works out to be 168 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
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This tire has a speed rating of R, which means 105 mph (170 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |