1999 Chevrolet K1500 Suburban Tire Size
There are multiple tire sizes for your 1999 Chevrolet K1500 Suburban that depend upon the trim level. Look for your trim level below to get a colorcoded explanation of your tire size. Then pick the best tire size for your 1999 Chevrolet K1500 Suburban.
LT245/75R16/C
Simplified Size: 2457516
Simplified size is useful for shopping and buying tires.
The original tire size for your 1999 Chevrolet K1500 Suburban is LT245/75R16/C . A colorcoded explanation of the 1999 Chevrolet K1500 Suburban's tire size is shown below.
LT  This letter denotes the intended use of the tire.
 
245  This number indicates that your tire has a width of 245 millimeters.  
16  The tire size was designed to fit rims or wheels that are 16 inches in diameter.  
C  The mark of C denotes your tire's load range, or ply rating. A load range of C means that the tire has a ply rating of 6. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads.  
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 183 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.

Trim Options:
(Diesel)LS (Diesel)LT (Diesel)
LT245/75R16/E
Simplified Size: 2457516
Simplified size is useful for shopping and buying tires.
The original tire size for your 1999 Chevrolet K1500 Suburban is LT245/75R16/E . A colorcoded explanation of the 1999 Chevrolet K1500 Suburban's tire size is shown below.
LT  This letter denotes the intended use of the tire.
 
245  This number indicates that your tire has a width of 245 millimeters.  
16  The tire size was designed to fit rims or wheels that are 16 inches in diameter.  
E  The mark of E denotes your tire's load range, or ply rating. A load range of E means that the tire has a ply rating of 10. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads.  
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 183 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.

P245/75R16 109
Simplified Size: 2457516
Simplified size is useful for shopping and buying tires.
The original tire size for your 1999 Chevrolet K1500 Suburban is P245/75R16 109S. A colorcoded explanation of the 1999 Chevrolet K1500 Suburban's tire size is shown below.
P  This letter denotes the intended use of the tire.
 
245  This number indicates that your tire has a width of 245 millimeters.  
16  The tire size was designed to fit rims or wheels that are 16 inches in diameter.  
109  This tire has a load index of 109, which means it's capable of carrying a load of 2266 pounds (1030 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 183 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
 
This tire has a speed rating of S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 