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  • Bolt Pattern

    Do you guys know what the bolt pattern is on a 91 GTP? I found a good deal on some boss rims but not sure if they will fit. 5 X 100mm??
    1991 Pontiac Grand Prix GTP / 3.4 DOHC

  • #2
    A W-body is most likely 5x115mm.
    -Brad-
    89 Mustang : Future 60V6 Power
    sigpic
    Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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    • #3
      Originally posted by bszopi View Post
      A W-body is most likely 5x115mm.
      i think you're either right, or close. it might have an odd bolt-spacing, i can't remember, like 114.5mm or something close to it...

      the info is on w-body, i know that.
      1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
      Latest nAst1 files here!
      Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

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      • #4
        The odd spacing would be 114.3mm
        -Brad-
        89 Mustang : Future 60V6 Power
        sigpic
        Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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        • #5
          5x115 38mm offset 16"x6.5" or 16"x8" If you have the cross lace wheels.
          Shane "RedZMonte"
          2004 Corvette Z06 Commemorative Edition -VIRGIN
          1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
          -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
          2004 Subaru WRX STI -Lightly Modded (SOLD)
          1994 Lumina Z34 -VIRGIN (SOLD)
          1992 Lumina Z34-VIRGIN (RIP)
          1992 L67 Lumina Z34 (SOLD)
          1990 Turbo Grand Prix (SOLD)

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          • #6
            Originally posted by RedZMonte View Post
            5x115 38mm offset 16"x6.5" or 16"x8" If you have the cross lace wheels.
            I found it after i posted this is the correct answer> thanks guys!
            1991 Pontiac Grand Prix GTP / 3.4 DOHC

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            • #7
              5x114.3 will fit w/ a centric hub ring but not ideal.. anything smaller or bigger will not work.

              S
              Shane "RedZMonte"
              2004 Corvette Z06 Commemorative Edition -VIRGIN
              1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
              -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
              2004 Subaru WRX STI -Lightly Modded (SOLD)
              1994 Lumina Z34 -VIRGIN (SOLD)
              1992 Lumina Z34-VIRGIN (RIP)
              1992 L67 Lumina Z34 (SOLD)
              1990 Turbo Grand Prix (SOLD)

              Comment


              • #8
                Ben had his studs break off with 114.3 rims. 114.3 are commonly used on mustangs i think.

                5 x 115 for wbodies.
                Corey's 95 GP - Engine/Trans installed
                02 GTP - 90* > Failboat
                www.blackbombshell95.com

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                • #9
                  Originally posted by blackbombshell95 View Post
                  Ben had his studs break off with 114.3 rims. 114.3 are commonly used on mustangs i think.

                  5 x 115 for wbodies.
                  I don't think I would risk it either. I'm not sure what a hub ring looks like but seems kinda hack.
                  1991 Pontiac Grand Prix GTP / 3.4 DOHC

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                  • #10
                    Originally posted by GTP091 View Post
                    I don't think I would risk it either. I'm not sure what a hub ring looks like but seems kinda hack.


                    its not ideal but it works... it just centers the wheel to the hub so that it is not offcenter causing vibrations. it is only .7mm off so it does technically pull the studs in to the center a tiny bit.. Again not ideal but will work.. if there is a 5x115 option for your wheel of choice definatly get the correct bolt pattern.

                    5x114.3=5x4.5 which is a common RWD bolt pattern.. alot of GP guys run the mustang bullet wheels.
                    Last edited by RedZMonte; 11-11-2009, 08:22 PM.
                    Shane "RedZMonte"
                    2004 Corvette Z06 Commemorative Edition -VIRGIN
                    1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
                    -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
                    2004 Subaru WRX STI -Lightly Modded (SOLD)
                    1994 Lumina Z34 -VIRGIN (SOLD)
                    1992 Lumina Z34-VIRGIN (RIP)
                    1992 L67 Lumina Z34 (SOLD)
                    1990 Turbo Grand Prix (SOLD)

                    Comment


                    • #11
                      what is the difference between the first and second generation w-body for off-set and bolt pattern?
                      1991 Grand Prix STE
                      3.4 DOHC
                      1 of 792 Produced
                      Extensive Mods Done

                      1991 Lumina Z34
                      3.4 DOHC
                      Getrag 284 5spd
                      1 of 30
                      Canadian Z34 Models Made with the Getrag 5spd Wahoooo!

                      1980 GMC Sierra Classic C25 With 18,000 ORIGINAL MILES!!!!

                      sigpic

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                      • #12
                        from w-body.com

                        First Gen W-body
                        1988-1997 Oldsmobile, 1988-1996 Buick Regal, 1990-1994 Chevy Lumina, 1988-1996 Ponitac Grand Prix

                        16x6.5 Rim Diameter/Width
                        5x115 Bolt pattern
                        +38mm Offset
                        94-96 Pontiac 5-star 16x7, offset is also +25mm ( All B4U wheels are +25mm )

                        1989-1990 Pontiac Grand Prix TGP crosslace* wheels are:
                        16x8 Rims Diameter/Width
                        5x115 Bolt pattern
                        25mm Offset

                        *Crosslace rims were 16 x 8 until 1996. From 1997 and up, they became 16 x 6.5


                        Generation 1.5 W-Body
                        1995-1999 Chevy Monte Carlo, 1995-1999 Chevy Lumina

                        16 x 6.5 Rim Diameter/Width
                        5x115 Bolt Pattern
                        +38mm Offset/Backspacing


                        Second Gen W-Body
                        1997+ Grand Prix's, Impala, 2000+ Monte, Olds Intreuge, 1997+ Regals

                        16x6.5 Rim Diameter/Width
                        5x115 Bolt pattern
                        +52mm Offset
                        1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                        Latest nAst1 files here!
                        Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                        Comment

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