1998 Ford F-250 Tire Size

There are multiple tire sizes for your 1998 Ford F-250 that depend upon the trim level.  Look for your trim level below to get a color-coded explanation of your tire size.  Then pick the best tire size for your 1998 Ford F-250.

Trim Options:

4x24x4Lariat 4x2Lariat 4x4XL 4x2XL 4x4XLT 4x2XLT 4x4

LT245/75R16/D

Simplified Size:  245-75-16

Simplified size is useful for shopping and buying tires.

The original tire size for your 1998 Ford F-250 is LT245/75R16/D.  A color-coded explanation of the 1998 Ford F-250's tire size is shown below.

LT

This letter denotes the intended use of the tire.

PPassenger Vehicle
LTLight Truck
CCommercial Vehicle
245

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

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.

RRadial
BBias Belt
DDiagonal
16

The tire size was designed to fit rims or wheels that are 16 inches in diameter.

D

The mark of D denotes your tire's load range, or ply rating.  A load range of D means that the tire has a ply rating of 8.  Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures.  Tires with higher inflation pressures can carry heavier loads.

Trim Options:

4x2Lariat 4x2XL 4x2XLT 4x2

P255/70R16 109S

Simplified Size:  255-70-16

Simplified size is useful for shopping and buying tires.

The original tire size for your 1998 Ford F-250 is P255/70R16 109S.  A color-coded explanation of the 1998 Ford F-250's tire size is shown below.

P

This letter denotes the intended use of the tire.

PPassenger Vehicle
LTLight Truck
CCommercial Vehicle
255

This number indicates that your tire has a width of 255 millimeters.

70

This number means that your tire has an aspect ratio of 70%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 70% of the width.  In this case, the sidewall height works out to be 178 millimeters.

R

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

RRadial
BBias Belt
DDiagonal
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.

S

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.