Bolt Pattern and lug Reference wheel simulator
Bolt Pattern Guide

Ford Bolt Pattern Guide

The bolt pattern, lug pattern, or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6, or 8 lug holes. A bolt circle of 4x100 would indicate a 4 lug pattern on a circle with a diameter of 100mm. The bolt pattern is comprised of two numbers - the first indicates how many bolt holes are on the wheel, and the other describes how far apart they are. A bolt pattern of 5-115mm would mean the wheel has five bolt holes and they are 115mm apart (measured across the center of the wheel). Dual Bolt Pattern: More and more manufacturers are building their wheels with two bolt patterns. This expands the number of fitments the wheel applies to. For example: a wheel with a 4-100/114.3 bolt pattern has 8 lug holes and will fit both 4-100mm and 4-114.3mm fitments. Measuring a 5-bolt pattern: A 5-bolt pattern is very difficult to measure without using a bolt pattern gauge. Basically, you would measure the diameter of a circle that crosses through the center of the lug holes. This method is not recommended to confirm wheel fitment. Please use the below as a reference only.


2008 Ford Mustang

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Ford Lug Pattern Reference

MODEL

YEAR

SIZE

P.C.D.

LUG SIZE

MM

OS

ASPIRE
94-on
13 X 4.5
4X100
12mmX1.5
54.1
H
CONTOUR
95-on
14 X 6
4X108
12mmX1.5
63.9
H
CROWN VICTORIA
91-on
15 X 7
5X114.3
1/2-RH
-
M/L
ESCORT
81-90
13 X 5.5
4X108
12mmX1.5
63.6
H
ESCORT LX, WAGON
91-94
13 X 5.5
4X100
12mmX1.5
54.1
H
ESCORT GT
91-96
15 X 6
4X100
12mmX1.5
54.1
H
ESCORT LX
92-97
14 X 5
4X100
12mmX1.5
54.1
H
EXP
81-85
13 X 5.5
4X108
12mmX1.5
63.9
H
FESTIVA
87-93
12 X 4
4X114.3
12mmX1.5
-
H
FOCUS
2000-on
15 X 6
4X108
12mmX1.5
63.9
H
FULL SIZE (GALAXIE,CUSTOM,ETC.)
57-64
14 X 6
5X114.3
12mmX1.5
-
L
FULL SIZE
-
(CUSTOM,GALAXIE,T-BIRD,ETC.)
65-72
15 X 6
5X114.3
1/2-RH
-
L
FULL SIZE 
 
(CUSTOM,GALAXIE,T-BIRD)
73-78
15 X 6
5X127
1/2-RH
-
L
FULL SIZE 
-
(CROWN VICTORIA,CUSTOM,GALAXIE,LTD)
79-96
15 X 6.5
5X114.3
1/2-RH
-
L
GRANADA,LTD II,FAIRMONT,T-BIRD
78-88
14 X 5.5
4X108
1/2-RH
-
M
MID-SIZE (FAIRLANE,FALCON,
-
MAVERICK,MUSTANG,ETC.)
64-74
14 X 6
4X114.3
1/2-RH
-
L/M
MID-SIZE (FAIRLANE,FALCON,
-
MAVERICK,MUSTANG,ETC.)
64-73
14 X 6
5X114.3
1/2-RH
-
L
MUSTANG
79-93
14 X 6
4X108
1/2-RH
-
M
MUSTANG
94-on
15 X 7
5X114.3
1/2-RH
-
M/H
MUSTANG GT
94-on
16 X 7.5
5X114.3
1/2-RH
70.3
M/H
MUSTANG GT (OPT.), COBRA
97-on
17 X 8
5X114.3
1/2-RH
70.3
M/H
MUSTANG 5.0GT
85-91
15 X 7
4X108
1/2-RH
-
M
MUSTANG 5.0GT
91-93
16 X 7
4X108
1/2-RH
-
M
PROBE
88-92
14 X 6 
5X114.3
12mmX1.5
59.6
H
PROBE
93-96
16 X 7
5X114.3
12mmX1.5
67.1
H
PROBE GT
88-97
15 X 6
5X114.3
12mmX1.5
59.6
H
T-BIRD
85-88
15X7
4X108
1/2-RH
-
M
T-BIRD
89-97
15 X 6
5X108
12mmX1.5
63.9
H
T-BIRD SC
89-97
16 X 7
5X108
12mmX1.5
63.9
H
T-BIRD
02-on
16 X 7
5X108
12mmX1.5
63.9
H
TAURUS
86-96
14 X 6
5X108
12mmX1.5
63.9
H
TAURUS
86-on
15 X 7
5X108
12mmX1.5
63.9
H
TAURUS SHO
97
16 X 7
5X108
12mmX1.5
63.9
H
TEMPO
83-85
13 X 5.5
4X108
12mmx1.5
63.9
H
TEMPO
85-94
14 X 6
4X108
12mmX1.5
63.9
H
TEMPO
92-94
15 X 6
4X108
12mmX1.5
63.9
H
ZX2
97-
15X6
4X100
12mmX1.5
54.1
H
AEROSTAR
85-97
14 X 6
5X114.3
1/2-RH
-
M
BRONCO
66-on
15 X 6(7)
5X139.7
1/2-RH
-
L
BRONCO II 7
82-90
15X7
5X114.3
1/2-RH
-
L/M
COURIER PICKUP
77-84
14 X 6
6X139.7
12mmX1.5
-
L
ESCAPE 
01-on
15X 6
5X114.3
12mmX1.5
-
H
EXCURSION
00-on
16x7
8X170
14mmX2.0
-
L
EXPEDITION
97-00
16X7
5X135
12X1.75
87
L
EXPEDITION
2-Jan
16X7
5X135
14mmX2.0
87
L
EXPEDITION 
02-on
17x8
6x135
14mmX2.0
87
L
EXPLORER, EXPLORER SPORT TRAC 7
90-on
15 X 7
5X114.3
1/2-RH
-
M/H
F1/2 TON F-100,150 TRUCK
54-95
15 X 6
5X139.7
1/2-RH
-
L
F150 TRUCK
96-00
16 X 7
5X135
12X1.75MM
87
L
F150 TRUCK
01-on
16 X 7
5X135
14mmX2.0
87
L
RANCHERO
65-84
14 X 5.5
5X114.3
1/2-RH
-
L
RANGER 2WD
81-on
14 X 6
5X114.3
1/2-RH
-
L/M
RANGER 4WD 7
83-on
15 X 6
5X114.3
1/2-RH
-
L/M
WINDSTAR
94-on
15 X 6
5X108
12mmX1.5
63.9
H
1/2 TON E-100,150 VAN
68-84
14 X 6
5X114.3
1/2-RH
-
L
1/2 TON E-100,150 VAN
70-96
15 X 6
5X139.7
1/2-RH
-
L
1/2 TON F-100 (4X2) POWER BRAKES 
80-85
15 X 6
5X114.3
1/2-RH
-
L

 

The offset of a wheel is the distance from the mounting surface of the wheel to the true centerline of the rim. A positive offset means the mounting surface of the wheel is positioned in front of the true centerline of the rim / tire assembly. This in effect brings the tire in to the fender well more. Conversely, a negative offset means the mounting surface of the wheel is behind the true centerline of the rim / tire assembly. This will cause the tire to stick out away from the vehicle.

 

H = High Positive or FWD (Front Wheel Drive) typically +45,40,35 offsets

M = Medium Offset or RWD (Rear Wheel Drive) Typically +20 offset

L = Low Offset or RWD (Rear Wheel Drive) Typically 0 offset

 

 

Plus sizing your wheel & tire combination was designed to enhance vehicle performance and looks by allowing  fitment of larger diameter rims and lower profile tires. The theory is that while making these changes, you keep the overall tire diameter within 3% of the original equipment tires. This is important because larger variances can cause problems with transmission shift points which can decrease fuel mileage. It can also confuse braking system computers which can even lead to brake failure.

Here's the rule of thumb for "plus sizing":

 

Plus 1:
Increase section width by 10mm
Decrease aspect ratio by 10 points
Increase rim diameter by 1 inch

Plus 2:
Increase section width by 20mm
Decrease aspect ratio by 20 points
Increase rim diameter by 2 inches.
 
This is not exact, but it will usually get you in the right ballpark. We always recommend consulting with the people you are purchasing the wheels and tires from to ensure fitment.
 

Centerbore relates to the center hole in the wheel that centers the wheel on the hub of the car. Since most wheels are mass produced, they have a large center bore to accommodate several different vehicles. If this is the case, it is recommended that you use a hub ring. Hub rings are hard plastic or metal ring that fits between the wheel and the vehicle. This centers the wheel perfectly on the hub ensuring that there is no run out when the wheel is installed on to the vehicle. Without hub rings it is possible to get vibrations even if the wheel / tire assembly is perfectly balanced.

Torque: All alloy wheels should be installed using a torque wrench. This ensures that the wheels are not too tight or too loose. Check your vehicle's manual for correct settings. When you install wheels for the first time, you should re-torque wheels after about 100km to 150km (60 to 90 miles). Always refer to Owner's Manual for proper factory specifications that take precedence over the listed recommendations. 12mm = 70~80, 7/16" = 55~65, 1/2" = 75~85, 14mm = 85~95, 9/16" = 95~115, 5/8" =135~145.