From Mechanical Database

List of bolt patterns & other wheel specs for Pontiac vehicles. Click the icon next to each column title to sort the results.

Model	Year	Size	Bolt pattern	Lug nut thread	MM	OS
All mid size (Grand Prix, Gto, Lemans, etc.)	64-87	14,15	5 x 120.7	12mm x 1.5 or 7/16-rh		L
All full size rwd (w/o 403 eng.)	77-86	15 x 6	5 x 120.7	7/16-rh		L
All full size rwd (w/o 403 eng.)	71-90	15 x 6	5 x 120.7	1/2-rh		L
Aztec	01+	15 x 6	5 x 115	12mm x 1.5	70.3	H
Bonneville fwd	87+	14 x 6	5 x 115	12mm x 1.5	70.3	H
Fiero	84-88	13 x 5.5	5 x 100	12mm x 1.5	57.1	H
Firebird	82-92	14 x 7	5 x 120.7	12mm x 1.5		L
Firebird	93+	16 x 7.5	5 x 120.7	12mm x 1.5	70.3	H
Firebird, Trans AM	67-92	14,15	5 x 120.7	7/16-rh		L
Grand AM	85-98	13 x 5.5	5 x 100	12mm x 1.5	57.1	H
Grand AM	to 99	16 x 6.5	5x115	12mm x 1.5	70.3	H
Grand Prix	88-92	14 x 5.5	5 x 115	12mm x 1.5	70.3	H
Grand Prix	88+	15 x 6	5 x 115	12mm x 1.5	70.3	H
Grand Prix, GTP	89-97	16 x 6.5	5 x 115	12mm x 1.5	70.3	M
Grand Prix	99+	16 x 6.5	5 x 100	12mm x 1.5	57.1	H
J-2000, 6000	82-84	13 x 5	5 x 100	12mm x 1.5	57.1	H
Le mans	88-93	13 x 5.5	4 x 100	12mm x 1.5	57.1	H
Montana	99+	15 x 6	5 x 115	12mm x 1.5	70.3	H
Phoenix	80-85	13 x 5.5	5 x 120.7	12mm x 1.5		L
Phoenix	83-84	14 x 6	5 x 100	12mm x 1.5	57.1	H
Sunbird	85-89	13 x 5.5	5 x 100	12mm x 1.5	57.1	H
Sunbird	85-94	14 x 6	5 x 100	12mm x 1.5	57.1	H
Sunfire	95-97	14 x 6	5 x 100	12mm x 1.5	57.1	H
Sunfire	95+	15 x 6	5 x 100	12mm x 1.5	57.1	H
Sunfire	95-97	16 x 6	5 x 100	12mm x 1.5	57.1	H
Trans AM	84-92	16 x 8	5 x 120.7	12mm x 1.5	57.1	L
Trans AM	93-97	16 x 8	5 x 120.7	12mm x 1.5	57.1	H
Trans Sport	90-97	15 x 6	5 x 115	12mm x 1.5	70.3	H
Trans Sport	90-91	14 x 5.5	5 x 115	12mm x 1.5	70.3	H
6000	82-89	14 x 5.5	5 x 100	12mm x 1.5	57.1	H
6000	83-91	14 x 6	5 x 115	12mm x 1.5	70.3	H