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  5. C/K series [1973 .. 1991]
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GMC Suburban 2500 C/K series [1973 .. 1991] USA+ Wheel fitment guide

GMC
Please select the GMC Suburban 2500 C/K series [1973 .. 1991] (USA+) vehicle modifications below and check tables to get wheel size, tire size, bolt pattern (PCD), rim offset, and other wheel fitment parameters.
Generation

C/K series [1973 .. 1991] USA+

USA+
Select the GMC Suburban 2500 C/K series [1973 .. 1991] vehicle modifications below for the region of USA+.

GMC Suburban 2500 C/K series [1973 .. 1991] - Modifications

GMC Suburban 2500 C/K series [1973 .. 1991] 350 4-bbl

155 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1973 .. 1973]
  • Sales regions: USA+
  • Power: 155 hp | 115.5 kW | 157 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 7.50R16.5LT 8PR 6Jx16.5 ET15 13 - 17 104 4.09 14.2 31.4
OE 7.50R16.5LT 6PR 6Jx16.5 ET15 13 - 17 104 4.09 11.0 24.3
OE 8.75R16.5LT 8PR 6Jx16.5 ET15 13 - 17 104 4.09 17.7 39.1
OE 9.50R16.5LT 8PR 6.75Jx16.5 ET0 -2 - 2 20.0 44.0
OE 10.00R16.5LT 6PR 8.25Jx16.5 ET0 -2 - 2 18.2 40.2

GMC Suburban 2500 C/K series [1973 .. 1991] 350 4-bbl

165 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1980 .. 1981]
  • Sales regions: USA+
  • Power: 165 hp | 123 kW | 167 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 7.50R16.5LT 6PR 6Jx16.5 ET15 13 - 17 104 4.09 11.0 24.3
OE 7.50R16.5LT 8PR 6Jx16.5 ET15 13 - 17 104 4.09 14.2 31.4
OE 8.75R16.5LT 8PR 6Jx16.5 ET15 13 - 17 104 4.09 17.7 39.1
OE 9.50R16.5LT 8PR 6.75Jx16.5 ET0 -2 - 2 20.0 44.0
OE 10.00R16.5LT 8PR 8.25Jx16.5 ET0 -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 350 4-bbl

160 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1974 .. 1975]
  • Sales regions: USA+
  • Power: 160 hp | 119 kW | 162 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 350 4-bbl

165 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1976 .. 1979]
  • Sales regions: USA+
  • Power: 165 hp | 123 kW | 167 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 350 4-bbl

165 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1982 .. 1986]
  • Sales regions: USA+
  • Power: 165 hp | 123 kW | 167 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4
OE 8PR front axle
10PR rear axle
15 - 19 15 - 19 112
112 4.41
4.41 		19.4
23.8 42.8
52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 350 EFI

195 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1987 .. 1987]
  • Sales regions: USA+
  • Power: 195 hp | 145.5 kW | 198 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 350 EFI

190 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1988 .. 1991]
  • Sales regions: USA+
  • Power: 190 hp | 141.5 kW | 192 PS
  • Engine: 5.7 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 379 D

145 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1990 .. 1991]
  • Sales regions: USA+
  • Power: 145 hp | 108 kW | 147 PS
  • Engine: 6.2 L, , Diesel
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 379 D

135 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1982 .. 1984]
  • Sales regions: USA+
  • Power: 135 hp | 100.5 kW | 137 PS
  • Engine: 6.6 L, , Diesel
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4
OE 8PR front axle
10PR rear axle
15 - 19 15 - 19 112
112 4.41
4.41 		19.4
23.8 42.8
52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 379 D

148 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1987 .. 1989]
  • Sales regions: USA+
  • Power: 148 hp | 110 kW | 150 PS
  • Engine: 6.2 L, , Diesel
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 379 D

148 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1985 .. 1986]
  • Sales regions: USA+
  • Power: 148 hp | 110 kW | 150 PS
  • Engine: 6.2 L, , Diesel
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR front axle
10PR rear axle
15 - 19 15 - 19 112
112 4.41
4.41 		19.4
23.8 42.8
52.4
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 400 4-bbl

175 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1975 .. 1977]
  • Sales regions: USA+
  • Power: 175 hp | 130.5 kW | 177 PS
  • Engine: 6.6 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 400 4-bbl

170 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1978 .. 1978]
  • Sales regions: USA+
  • Power: 170 hp | 127 kW | 173 PS
  • Engine: 6.6 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 400 4-bbl

180 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1980 .. 1981]
  • Sales regions: USA+
  • Power: 180 hp | 134 kW | 182 PS
  • Engine: 6.6 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 400 4-bbl

185 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1979 .. 1979]
  • Sales regions: USA+
  • Power: 185 hp | 138 kW | 188 PS
  • Engine: 6.6 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

240 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1986 .. 1986]
  • Sales regions: USA+
  • Power: 240 hp | 179 kW | 243 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4
OE 8PR front axle
10PR rear axle
15 - 19 15 - 19 112
112 4.41
4.41 		19.4
23.8 42.8
52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

230 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1974 .. 1974]
  • Sales regions: USA+
  • Power: 230 hp | 171.5 kW | 233 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.8 45.8
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

240 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1973 .. 1973]
  • Sales regions: USA+
  • Power: 240 hp | 179 kW | 243 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR 13 - 17 104 4.09 17.4 38.4
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR -2 - 2 20.0 44.0
OE 6PR -2 - 2 18.2 40.2

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

245 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1975 .. 1975]
  • Sales regions: USA+
  • Power: 245 hp | 183 kW | 249 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

205 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1978 .. 1979]
  • Sales regions: USA+
  • Power: 205 hp | 153 kW | 208 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

240 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1976 .. 1977]
  • Sales regions: USA+
  • Power: 240 hp | 179 kW | 243 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

210 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1980 .. 1981]
  • Sales regions: USA+
  • Power: 210 hp | 156.5 kW | 213 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR 13 - 17 104 4.09 14.2 31.4
OE 6PR 13 - 17 104 4.09 11.0 24.3
OE 8PR 13 - 17 104 4.09 17.7 39.1
OE 8PR -2 - 2 20.0 44.0
OE 8PR -2 - 2 23.6 52.0

GMC Suburban 2500 C/K series [1973 .. 1991] 454 4-bbl

230 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1982 .. 1985]
  • Sales regions: USA+
  • Power: 230 hp | 171.5 kW | 233 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 8PR front axle
10PR rear axle
15 - 19 15 - 19 112
112 4.41
4.41 		19.4
23.8 42.8
52.4
OE 10PR 15 - 19 112 4.41 23.8 52.4

GMC Suburban 2500 C/K series [1973 .. 1991] 454 EFI

230 hp
USDM
  • Generation: C/K series [1973 .. 1991] [USDM]
  • Production: [1987 .. 1991]
  • Sales regions: USA+
  • Power: 230 hp | 171.5 kW | 233 PS
  • Engine: 7.4 L, , Petrol
  • Center Bore / Hub Bore:
  • Bolt Pattern (PCD): ()
  • Wheel Fasteners: Lug nuts
  • Thread Size:
  • Wheel Tightening Torque:
    unknown
Tire   Rim   Offset Range mm Backspacing mm inches Tire Weight kg lb Tire Pressure (front / rear) bar psi
OE 10PR 15 - 19 112 4.41 23.8 52.4
Page update: Feb. 18, 2021, 1:26 p.m.
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Tire Glossary
Tire terms you can see on this page

The size of the hole in the center of a wheel is known as the center bore or centerbore.

- Recommended for winter
- Run-flat tires
- Link comes to the calculator page for comparison
- Steel wheels
OE - Original Equipment
- Tire Pressure
- Front axle
- Rear axle

Offset is the distance in millimetres from the centre line of the wheel to the wheel’s mounting face. Given that the mounting face can be either in front of or behind the centreline, the offset can be either neutral, positive or negative.

The Pitch Circle Diameter (PCD) is the diameter of the circle which passes through the centre of all the studs, wheel bolts or wheel rim holes

hp - Mechanical horsepower
kW - Kilowatts
PS - Metric horsepower

Wheel backspace is the distance from a wheel's mounting surface to the back edge of the wheel.

Tire pressure is a vehicle's recommended cold tire inflation pressure. It is measured in bars or PSI (pounds per square inch).

A sales region is a global automotive region in which a vehicle was officially sold or is still being sold.

Ex.: 7J x 15 Rim width (inches) x rim diameter (inches)

ISO standard Ex.: M12 x 1.25 Nominal diameter (mm) x pitch (mm)

UN-series Ex.: 9/16" - 18 UNF Thread size (in) - thread pitch
UNF - Unified National Fine Thread

Example: 215/55 R16 91 T

215 is the tire width in mm
55 is the ratio of profile height to width or simply 'profile'. With the same width, the larger this indicator, the higher the tire will be and vice versa
16 - diameter of the wheel (disk) in inches. (It is the diameter, not the radius!). This is the inner size of the tire or the outer size of the rim
91 - load index. This is the level of maximum permissible load on one wheel
T - tire speed index

The method of attaching a wheel to a hub: wheel nuts or wheel bolts

The torque value specified by the manufacturer for wheel bolts or wheel nuts, which is to be set when tightening on the torque tool (torque setting). A rotational force given in Newton metres (Nm) or foot-pounds (ft-lbs), wheel torque measures lug nut / bolts tightness

Ply rating denotes tire strength and load capacity, based on its layer count.
Load Range
Ply
Rating
Max. Load Pressure

The tires included with a new vehicle when it is purchased. OE tires are specifically chosen by the vehicle manufacturer to make the most of the vehicle's performance characteristics.

Load Index represents the maximum load a tire can carry, while Speed Rating indicates the maximum safe speed.
Load Index
Speed Rating
Capacity
Max Speed