1998 Chevy Corvette Tire Size
Listed below is the tire size for your 1998 Chevy Corvette with a detailed explanation of the tire code. Make sure to compare the size with the information in your driver side door or owner's manual to confirm accuracy.
Front Tire P245/45ZR17/LL 89 Runflat 


P 
This letter denotes the intended use of the tire.


245 
This number indicates that your tire has a width of 245 millimeters. 

45 
This number means that your tire has an aspect ratio of 45%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width. In this case, the sidewall height works out to be 110.25 millimeters. 

Z 
This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (over 240 km/h). tire's speed class is less specific than the speed rating. 

R 
This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.


17 
The tire size was designed to fit rims or wheels that are 17 inches in diameter. 

LL 
The mark of LL means light load. The tire is for light usage and loads. 

89 
This tire has a load index of 89, which means it's capable of carrying a load of 1276 pounds (580 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. 

This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 

Runflat 
A runflat tire uses modern technology so that in the case of a punture, the vehicle may still be driven at a low speed for a short distance. The maximum speed and distance after a puncture largely depends upon the tire. Maximum distances after a flat commonly range between between 100200 miles. Depending on the tire, it may be possible to drive as fast as 55 mph after a puncture. Check your tire's documentation and vehicle user manual to determine maximum distances and speeds. 
Rear Tire P275/40ZR18/LL 94 Runflat 


P 
This letter denotes the intended use of the tire.


275 
This number indicates that your tire has a width of 275 millimeters. 

40 
This number means that your tire has an aspect ratio of 40%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width. In this case, the sidewall height works out to be 110.00 millimeters. 

Z 
This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (over 240 km/h). tire's speed class is less specific than the speed rating. 

R 
This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.


18 
The tire size was designed to fit rims or wheels that are 18 inches in diameter. 

LL 
The mark of LL means light load. The tire is for light usage and loads. 

94 
This tire has a load index of 94, which means it's capable of carrying a load of 1474 pounds (670 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. 

This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. 

Runflat 
A runflat tire uses modern technology so that in the case of a punture, the vehicle may still be driven at a low speed for a short distance. The maximum speed and distance after a puncture largely depends upon the tire. Maximum distances after a flat commonly range between between 100200 miles. Depending on the tire, it may be possible to drive as fast as 55 mph after a puncture. Check your tire's documentation and vehicle user manual to determine maximum distances and speeds. 