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2007-UP 1500 2WD and 4WD



 '07-Up GM 1500 2WD & 4WD
 Wheel Size
 Suggested Tire
 *Notes
 17x8 Wheels
 265/70R17, 285/70R17
 
 17x9 Wheels
 285/70R17, 295/70R17
 Leveling or Lift Kit Required
 18x8.5 Wheels
 275/60R18, 285/60R15
 
 18x9 Wheels
 285/60R18, 285/65R18
5.75" Backspace (Less than 5.75" BS Leveling or Lift Kit Required)
 20x8.5 Wheels
 275/55R20, 285/50R20
 
 20x9 Wheels
 275/55R20, 285/50R20 5.75" Backspace (Less than 5.75" BS Leveling or Lift Kit Required)
 20x10 Wheels
 305/50R20, 305/55R20, 325/60R20, 355/60R20, 33/12.50R20, 35/12.50R20
 Lift kit required
 20x12 Wheels

 Lift kit required
 22x9-22x9.5 Wheels
 285/45R22 
 24x9- 24x10 Wheels
 295/35R24 

1999-2006 1500 2WD and 4WD


In 1999 GM redesigned their 1/2 trucks. Now both 2WD and 4WD trucks use the same 6/5.5 bolt pattern. All '99 to '04 trucks must use 16" or larger wheels. GM introduced rack and pinion steering on the 2WD trucks which require a hub centric wheel. Hub centric means that the center of the wheel must be the same size as the hub on the truck. In other words the wheel on the 2WD models centers on the hub instead of the lugs as past trucks had. This means that only 6 lug wheels made specifically for the GM hub will work properly on the 1999-Up 2WD 1500. Although large bore 6 lug wheels will fit on the truck, a bad vibration is experienced at higher speeds. Most wheel manufacturers have built wheels with the proper 78.3 mm hub bore. 4WD models can use both large bore (108 mm) or hub centric (78.3 mm) wheels. Tahoe and Suburban have the same characteristics as the 1500 beginning with 2000 year models. Beginning in 2005 17" wheels are required to compensate for bigger brakes. Below is a chart with recommendations for tire fitments based on wheel size.
 Wheel Size
 Tire Size
Modification
 16x8 Wheels
 245/45R16, 265/70R16, 265/75R16, 285/75R16, 295/75R16, 305/70R16
 No modification necessary for sizes up to 265/75R16.  No modification necessary for 285/75R16 unless the wheel has less than 4.5" BS.  Sizes larger than 285/75R16 require a lift kit.  ***16" wheels do not fit on 2005 and newer models.***
 16x10 Wheels
 305/70R16, 315/75R16, 325/70R16, 365/65R16
 All sizes on 16x10 wheels require lift kit.  ***16" wheels do not fit on 2005 and newer models.***
 17x8 Wheels
 265/70R17, 285/60R17, 285/70R17, 295/70R17,
 295/70R17, 33/12.50R17
 No modification is necessary for 265/70R17, 285/60R17, and 285/70R17.  A leveling kit is required for 295/70R17 and 33/12.50R17 as long as the backspace is 4.5" or greater.
 17x9 Wheels
 265/70R17, 285/60R17, 285/70R17, 295/70R17,
 295/70R17, 33/12.50R17, 35/12.50R17
 No modification necessary for 265/70R17, 285/60R17, and 285/70R17 if backspace is 5.0" or larger.  33" tires require a leveling kit if backspace is less than 5.5".  Lift kit is required for 35" tires.
 18x8.5 Wheels
 265/60R18, 285/60R18
 No modifications required.
 18x9 Wheels
 265//65R18, 285/60R18, 275/65R18, 275/70R18,
 305/65R18, 325/60R18, 35/12.50R18
 5.75" BS. fits 265/75R18, 285/60R18, and 275/65R18.  Trimming of air dam will work for 5.0" backspace on 285/60R18 and 275/65R18, and leveling kit required to avoid trimming.  LIft kit required for sizes larger than 285/60R18 and 275/65R18. 
20x8.5  Wheels
 275/55R20, 285/50R18, 305/50R20
 No modification required.
 20x9 Wheels
 285/50R20, 285/55R20, 275/60R20, 305/50R20,  305/55R20, 33/12.50R20, 285/65R20, 35/12.50R20
  5.75" BS. fits 285/50R20, 285/55R20, and 275/55R20.  Trimming of air dam will work for 5.0" backspace on 285/50R20  and 285/55R20, and leveling kit required to avoid trimming.  Leveling kit required for 33" tires. Lift kit required for sizes larger than 33".
 20x10 Wheels
 305/50R20, 305/55R20, 325/60R20, 355/60R20, 33/12.50R20, 35/12.50R20
 Lift Kit Required.
20x12 Wheels
  6" - 8" Lift Kit Required.
 22x9-22x9.5 Wheels
 285/45R22 


1989-1998 1500 4x4

These trucks have the same fitment characteristics and bolt pattern as the '99-2006 trucks.

1989-1998 1500 2WD

These trucks have the 5x5.0 bolt pattern and can fit up to 10" wide wheels even on the front unless the truck is lowered. Lug size is 14mmx1.50.

1971-1987 C10 2WD

These trucks have the 5x5.0 bolt pattern and can fit up to 10" wide wheels even on the front unless the truck is lowered. Lug size is 1/2"-20.
 1971-1998 GM 1/2 Ton 2WD Including Blazer 2WD, Tahoe 2WD, Suburban 2WD, Yukon 2WD
Wheel Size
Tire Size
*Notes
 15x7 Wheels
 235/75R15, 255/70R15
 No modifications necessary.  Do not use 15" on lowered trucks.
 15x8 Wheels
 235/75R15, 255/70R15, 275/60R15, 295/50R15
 No modifications necessary.  Do not use 15" on lowered trucks.
 15x10 Wheels
 275/60R15, 295/50R15
 No modifications necessary.  Do not use 15" on lowered trucks.
 17x8 Wheels
 255/50R17, 275/50R17
 Backspace should be between 4.0" and 5.0".
 17x9.5 Wheels
 275/50R17 Backspace should be 5.5" for rear only.  Not for use on front.
 18x8 Wheels
 235/50R18, 255/45R18
 Backspace 4.5"
 18x9 Wheels
 255/45R18, 295/45R18 Backspace 4.5" -5.25"
 18x10 Wheels
 295/45R18 Backspace should be 5.5" to 5.75" for rear only.  Not for use on front.
 20x8- 20x8.5 Wheels
 245/40R20, 245/45R20, 255/45R20
 Backspace should be 4.5"-4.75".
 20x9.5 - 20x10 Wheels
 275/40R20, 295/40R20, 295/45R20
 Backspace should be 5.25" to 5.5" for rear only.  Not for use on front.
 22x9 *'88-'98 Trucks Only
 265/35R22 Backspace approximately 5.5"
 22x11 *'88-'98 Trucks Only 295/30R22
 Backspace approximately 6.75"


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