Pontiac Wheel Spacers

Firebird 1967–2002, Trans Am 1969–2002, GTO 1964–1974, Grand Prix 1969–1987 and LeMans 1964–1981 wheel spacers: 5x120.65 (5x4.75"), 70.3mm front hub

7/16"-20 thread: the Firebird 1967–1981, Trans Am 1969–1981, GTO 1964–1974, LeMans 1964–1981, Grand Prix 1969–1981, Grand Am 1973–1975 and 1978–1980, Parisienne 1983–1986 (not the Safari wagon) and Tempest 1964–1967 fit the 5x4.75" bolt-on pair with 7/16" studs (73.1mm center bore, 1" to 2"); the Phoenix 1977–1979 shares the pattern and thread, but its hub is not confirmed by an outside source, so measure it before ordering. 12x1.5 thread: the Firebird 1982–2002, Trans Am 1982–2002, Bonneville 1982–1986 and Grand Prix 1982–1987 fit the 5x4.75" bolt-on pair with 12x1.5 studs (74.1mm center bore, 0.75" to 3"), or the 5x4.75" hub centric Corvette pair (70.3mm bore, 12x1.5 studs, 1" to 2", front axle only on the Firebird 1982–2002 and Trans Am 1982–2002, for factory wheels with a 70.3mm center bore), listed for original wheels and, for vehicles not on its list, a factory hub shaped like its diagram and no taller than 20mm. Outside sources confirm the 70.3mm hub on the front axle of the Firebird 1982–2002 and Trans Am 1982–2002, so the hub centric pair goes on the front axle only. The rear pilot is confirmed at 74.1mm only on the Firebird 1993, Trans Am 1993 and Firebird 1997 V8; on any other year measure the rear pilot first. The 12x1.5 pair (74.1mm center bore) is the rear choice only when the pilot clears it; its listing names Firebird 1982–2002 and Trans Am through 2002, with a rear-pilot measurement condition. The Tempest 1968–1970 shares the pattern and hub; its stud thread is confirmed only through its LeMans twin, so check it before ordering. If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

Grand Am 1985–1998, Sunbird 1982–1994, Sunfire 1995–2005, Fiero 1984–1988 and Vibe 2003–2010 (not the 2009–2010 2.4L and AWD) wheel spacers: 5x100, 12x1.5 thread

With a 57.1mm hub: the Grand Am 1985–1998, Sunbird 1982–1994, Sunfire 1995–2005, Fiero 1984–1988, Phoenix 1980–1984 and the 1982 6000 fit the 57.1mm hub centric slip-on pairs (the dual-drilled 5x100/5x112 pairs in 5mm and 15mm) or, for a wider setup, the 5x100 bolt-on pair (57.1mm bore, 12x1.5 studs, 1" to 2"). The Vibe 2003–2010 is 5x100 with a 12x1.5 thread and a 54.1mm hub: fit the 5x100 hub centric Toyota and Scion pair (54.1mm bore, 1", for factory wheels with a 54.1mm center bore) or the 5x100 bolt-on pair, whose 57.1mm center bore clears the hub. The 2.4L and all-wheel-drive Vibe 2009–2010 is 5x114.3 with a 60.1mm hub instead. The 5x4.5" hub centric Lexus and Toyota pair is not listed for this Vibe and is not offered for it here. Choose the 5x4.5" bolt-on pair with 12x1.5 studs (73mm center bore, 0.75" to 2"). On a slip-on, check that the studs keep full thread engagement at the thickness you choose, fitting longer studs if they fall short (from 15mm up, plan on them). If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

G6 Base/GT 2005–2010 and Solstice 2006–2010 wheel spacers: 5x110, 12x1.5 thread, 65.1mm hub

The G6 Base/GT 2005–2010 and Solstice 2006–2010 use 5x110 with a 12x1.5 thread and a 65.1mm hub. Fit the 5x110 hub centric slip-on pair (65.1mm bore, 5mm) or the 5x110 bolt-on pair (65.1mm bore, 12x1.5 studs, 1" or 1.25"). Before ordering the 5mm 5x110 slip-on pair, check your hub diameter. On the slip-on, check that your studs keep full thread engagement with it in place, and fit longer studs if they fall short. Conversions: 5x110 hub wheel adapters.

G8 2008–2009 wheel spacers: 5x120, 14x1.5 thread, 67.1mm hub

The G8 2008–2009 uses 5x120 with a 14x1.5 thread and a 67.1mm hub. Fit the 5x120 bolt-on pair with a 67.1mm center bore (14x1.5 studs, 1") or the 5x120 pair with a 72.56mm center bore (14x1.5 studs, 1.25" or 1.5"); whichever pair you choose, the wheel must seat flush on its face, and the 67.1mm-bore pair's listing says to shorten any factory stud that stands proud of that pair's face and stops the wheel seating flush. The GTO 2004–2006 uses the 5x120 pattern with 12x1.5 studs and a 69.5mm hub; neither 5x120 pair here carries 12x1.5 studs, so it is not matched on this page.

4x100 Pontiac wheel spacers for the LeMans 1988–1993, G3 2009 and 1000 1981–1987; 5x5" for the Grand Ville 1971–1975

The LeMans 1988–1993 and G3 2009 are 4x100 with a 12x1.5 thread and a 56.6mm hub: the 57.1mm 4x100 slip-on pairs in 5mm and 8mm clear that hub; the 15mm and 20mm pairs have a 57.1mm centering lip, which a wheel with a 56.6mm center bore cannot accept. The 4x100 bolt-on pair (64mm center bore, 12x1.5 studs, 1" to 2") fits for anything thicker. The 1000 1981–1987 is 4x100 with a 12x1.5 thread and a 57.1mm hub and takes the 57.1mm 4x100 slip-ons (5mm or 8mm, or 15mm or 20mm with a centering lip your wheel's center bore must accept) or the bolt-on pair. Before ordering the flat 5mm or 8mm 4x100 slip-ons, measure your hub or confirm your vehicle's hub size. On a slip-on, check that the studs keep full thread engagement at the thickness you choose, fitting longer studs if they fall short (from 15mm up, plan on them); never shorten the studs, because they pass through the spacer and the wheel. With longer studs fitted, check that closed-end lug nuts don't bottom out. The Grand Ville 1971–1975 is 5x127 (5x5") with a 1/2"-20 thread and a 78.1mm hub and takes the 5x5" bolt-on pair with 1/2" studs (78.3mm center bore, 0.75" to 2"); the Executive 1967–1970 with its standard five-lug wheels (not the optional 8-lug aluminum wheels) shares the pattern and thread, but its hub is not confirmed by an outside source and the 5x5" pair's listing does not include this model and year range, so that pair is not offered for it here. If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

How to choose a Pontiac spacer: slip-on or bolt-on, thread, hub bore and thickness

Slip-on spacers slide over existing wheel studs like a thick washer, ideal for thin adjustments. Bolt-on spacers bolt directly to factory studs using separate hardware and feature their own integrated studs to mount the wheel, ideal for wider setups. Hub centric is an attribute of both types: the pair is bored to your hub diameter so the hub, not the studs, centers it.

• Thread: 7/16"-20 on the 5x4.75" Pontiacs named above through 1981 (not confirmed on the Tempest 1968–1970) and on the Parisienne 1983–1986 (not the Safari wagon); 12x1.5 on the Firebird 1982–2002, Trans Am 1982–2002, Bonneville 1982–1986 and Grand Prix 1982–1987, and on every 5x100, 5x110 and 4x100 Pontiac; 14x1.5 on the G8 2008–2009; 1/2"-20 on the 5x5" full-size cars named above. A bolt-on pair's studs must carry your vehicle's thread. On a hub with wheel studs, your own lug nuts clamp the pair to the hub; on a hub with lug bolts, the hub-side bolts are bought separately in your car's thread and seat, because bolt-on spacers do not include lug bolts. The wheel then mounts on the pair's studs with the lug nuts named in that pair's listing, or with lug nuts that match its stud thread if the listing names none.
• Hub bore: 70.3mm on the 5x4.75" cars named above (except the Firebird 1982–2002 and Trans Am 1982–2002, listed next; not confirmed on the Phoenix 1977–1979); 70.3mm front hub on the Firebird 1982–2002 and Trans Am 1982–2002; 74.1mm rear pilot only on the Firebird 1993, Trans Am 1993 and Firebird 1997 V8, so measure the rear pilot on any other year before choosing a rear pair; 57.1mm on most 5x100 cars, 54.1mm on the Vibe (60.1mm on the 2.4L and AWD 2009–2010), 65.1mm on the G6 and Solstice, 67.1mm on the G8, 56.6mm on the LeMans 1988–1993 and G3. If your Pontiac is not named above, measure the hub, or measure your bolt pattern if you are unsure of it.
• Before ordering the flat 5mm or 8mm 4x100 slip-ons, measure your hub or confirm your vehicle's hub size. Thickness available: slip-on 5mm to 20mm (keep full thread engagement at the thickness you choose, fitting longer studs if they fall short; the lipped 57.1mm 4x100 15mm and 20mm need a wheel center bore that accepts the lip); the 5x4.75" 7/16" pair 1" to 2", the 12x1.5 pair 0.75" to 3", the 70.3mm hub centric Corvette pair 1" to 2" (original wheels with a 70.3mm center bore; if not on the listing, a hub shaped like its diagram and no taller than 20mm); the 5x100 bolt-on, 4x100 and 5x5" pairs up to 2"; the 54.1mm hub centric 5x100 pair 1" (for factory wheels with a 54.1mm center bore); the 5x4.5" 12x1.5 lug centric pair 0.75" to 2" (the 60.1mm hub centric pair is not listed for the Vibe and is not offered for it here); the 5x110 pair 1" or 1.25"; the 5x120 pairs 1" to 1.5". Before ordering the 5mm 5x110 slip-on pair, check your hub diameter. Choose the thinnest pair that clears. The wheel must seat flush on any pair; the listings for every bolt-on pair here except the 5x110 pair and the 72.56mm-bore 5x120 pair say to shorten factory studs that stand proud of a pair's face and stop the wheel seating flush. On a slip-on, never shorten the studs, because they pass through the spacer and the wheel. With longer studs fitted, check that closed-end lug nuts don't bottom out.
• Torque: torque to Pontiac's specification for your model and check the nuts again after the first 50 to 100 miles.

Common questions

Which spacers fit a Firebird or Trans Am? Firebird 1967–1981 and Trans Am 1969–1981: the 5x4.75" pair with 7/16" studs. Firebird 1982–2002 and Trans Am 1982–2002: the 5x4.75" pair with 12x1.5 studs (on the rear, measure the pilot first unless it is a 1993 car or a 1997 Firebird V8), or the 70.3mm hub centric pair on the front axle only (original wheels with a 70.3mm center bore; if not on its list, a hub shaped like its diagram and no taller than 20mm). If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

Which spacers fit a Pontiac GTO? GTO 1964–1974: the 5x4.75" pair with 7/16" studs. GTO 2004–2006: 5x120 with 12x1.5 studs, which neither 5x120 pair here matches. If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

Which spacers fit a Grand Prix? Grand Prix 1969–1981: the 5x4.75" pair with 7/16" studs. Grand Prix 1982–1987: the 5x4.75" pair with 12x1.5 studs or the 70.3mm hub centric pair (original wheels with a 70.3mm center bore; if not on its list, a hub shaped like its diagram and no taller than 20mm). If the factory studs stand proud of a bolt-on pair's face and stop the wheel seating flush, shorten them.

Do bolt-on Pontiac spacers include lug nuts? Each listing says what it includes. The pair fastens to the hub with your own lug nuts on a studded hub, or with hub-side lug bolts in your car's thread and seat, bought separately, on a lug-bolt hub, since bolt-on spacers never include lug bolts. The wheel mounts on the pair's studs with the lug nuts named in that listing, or with lug nuts matching its stud thread if none are named.

More wheel spacers

Browse all wheel spacers, hub centric slip-on wheel spacers, hub centric bolt-on wheel spacers and bolt-on wheel spacers, or shop by lug count: 4 lug and 5 lug wheel spacers. The same 5x4.75" pairs are on our Chevy wheel spacers page, and the 5x110 spacers on Saturn wheel spacers.