Here is a good read on how to calculate and understand wheel offset and it's measurement.
https://www.rsracing.com/tech-wheel.html
I've done some measuring and here is what I have come up with.
Note:
Wheel: Style/type
Size: Rim Diameter and width
FS: Front spacing
BS: Back spacing
Offset : Formula: FS + BS divided by 2, then minus FS = offset (+ is positive, - is negative)
Wheel: Cheviot Hustlers (same as on my wagon)
Size: 13 x 6 inches
FS: 85mm
BS: 95mm
Offset : +5mm
Even though this rim is a 13 x 6 inch rim, the actual sizes are different. The 13 x 6 inch measurement is taken between the bead seats, They don't include the outer flanges.
6 inches from inner to outer bead seat (150mm)
7 inches overall including the outer flanges (180mm)
Overall Diameter 14 1/3 inches (365mm)
To measure Front spacing, measure through the centre bore from the mounting pad
To measure the Rear spacing, measure from the mounting pad
Other Rims I have laying around that I have measured.
Wheel: Standard Galant Rims
Size: 13 x 4.5 inches
FS: 35mm
BS: 110mm
Offset : +37.5mm
Wheel: Standard fitment steel GH Sigma rims
Size: 14 x 5 inches
FS: 55mm
BS: 110mm
Offset : +27.5mm
Wheel: Superlites
Size: 14 x 6 inches
FS: 65mm
BS: 115mm
Offset : +25mm
Wheel: Bathurst Mk1
Size: 13 x 6 inches
FS: 70mm
BS: 110mm
Offset : +20mm
Wheel: Standard fitment FWD Colt rims
Size: 13x 5 inches
FS: 35mm
BS: 120mm
Offset : +42.5mm
If you want to add sizing for more rims, copy and paste this to put up the sizes.
There is also another factor to wheel offset, and that is strut choice. Eg: If you have a modified Galant or Lancer, fitting Sigma/Scorpian struts changes your front wheel track.
For differences read this topic Strut offset differences
Dave...
https://www.rsracing.com/tech-wheel.html
I've done some measuring and here is what I have come up with.
Note:
Wheel: Style/type
Size: Rim Diameter and width
FS: Front spacing
BS: Back spacing
Offset : Formula: FS + BS divided by 2, then minus FS = offset (+ is positive, - is negative)
Wheel: Cheviot Hustlers (same as on my wagon)
Size: 13 x 6 inches
FS: 85mm
BS: 95mm
Offset : +5mm
Even though this rim is a 13 x 6 inch rim, the actual sizes are different. The 13 x 6 inch measurement is taken between the bead seats, They don't include the outer flanges.
6 inches from inner to outer bead seat (150mm)
7 inches overall including the outer flanges (180mm)
Overall Diameter 14 1/3 inches (365mm)
To measure Front spacing, measure through the centre bore from the mounting pad
To measure the Rear spacing, measure from the mounting pad
Other Rims I have laying around that I have measured.
Wheel: Standard Galant Rims
Size: 13 x 4.5 inches
FS: 35mm
BS: 110mm
Offset : +37.5mm
Wheel: Standard fitment steel GH Sigma rims
Size: 14 x 5 inches
FS: 55mm
BS: 110mm
Offset : +27.5mm
Wheel: Superlites
Size: 14 x 6 inches
FS: 65mm
BS: 115mm
Offset : +25mm
Wheel: Bathurst Mk1
Size: 13 x 6 inches
FS: 70mm
BS: 110mm
Offset : +20mm
Wheel: Standard fitment FWD Colt rims
Size: 13x 5 inches
FS: 35mm
BS: 120mm
Offset : +42.5mm
If you want to add sizing for more rims, copy and paste this to put up the sizes.
- Code: Select all
[color=#FF8000][b]Wheel:[/b][/color]
[color=#FF8000]Size:[/color]
[color=#FF8000]FS:[/color]
[color=#FF8000]BS:[/color]
[color=#FF8000]Offset :[/color]
There is also another factor to wheel offset, and that is strut choice. Eg: If you have a modified Galant or Lancer, fitting Sigma/Scorpian struts changes your front wheel track.
For differences read this topic Strut offset differences
Dave...
