Rally Wheel Serial Number Decoding
March 10th, 2014, 08:22 AM
#1
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Thread Starter
Join Date: Aug 2013
Posts: 2
Rally Wheel Serial Number Decoding
I recently bought a complete set of Rally Wheels off of Ebay. All of the numbers match on all four of them. I was wondering if anyone knew how to decode the stampings on the back of the wheel?
Here is what mine read:
X A 03 13 85 991 JJ MW5 T CANADA
I thought maybe the production date was the 03/13/1985 but wasn't sure about the rest. Any help would be appreciated.
Here is what mine read:
X A 03 13 85 991 JJ MW5 T CANADA
I thought maybe the production date was the 03/13/1985 but wasn't sure about the rest. Any help would be appreciated.
March 10th, 2014, 10:28 AM
#2
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Join Date: Oct 2011
Location: Chelmsford, Mass
Posts: 604
I would like to know the same thing.
Here is my list of numbers.
My Rims are 15 inch, which means they are from 1975+.
Guess #1 W 2 16 4, could mean February 16, 1974?
Guess #2 975, could mean September 1975?
OD 15x7 JJ
Made in Canada B
W 2 16 4
M5 7 975
Here is my list of numbers.
My Rims are 15 inch, which means they are from 1975+.
Guess #1 W 2 16 4, could mean February 16, 1974?
Guess #2 975, could mean September 1975?
OD 15x7 JJ
Made in Canada B
W 2 16 4
M5 7 975
March 10th, 2014, 12:11 PM
#4
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Join Date: May 2013
Location: Columbus Nebraska
Posts: 162
X A 03 13 85 991 JJ MW5 T CANADA
991 outer ring number(bent a certain way)
M=Motor Wheel
W?= Windsor Canada Plant
5= 1975 or 1985 Need to see rim.
03= March
13= 13th Day
85= 1985?
XA= Wheel Code
Really need to see rim.
Mike
991 outer ring number(bent a certain way)
M=Motor Wheel
W?= Windsor Canada Plant
5= 1975 or 1985 Need to see rim.
03= March
13= 13th Day
85= 1985?
XA= Wheel Code
Really need to see rim.
Mike
March 10th, 2014, 12:30 PM
#5
Registered User
Join Date: Oct 2011
Location: Chelmsford, Mass
Posts: 604
My guess for my rims is that the “W 2 16 4” numbers are a date code.
The reason I chooses these numbers is because you have to change the casting value every Day or Week of production.
The date numbers are either Cast into the Rim (very expensive) or Stamped onto the rim after it’s made (much cheaper to implement).
The W numbers are not straight. Each set of digits is rotated at a different angle, which to me indicates these values changed frequently.
All of the other stamps have the numbers and letters spaced consistently.
Since Oldsmobile started selling 15 inch Rally rims with the 1975 Oldsmobile’s, Ill guess they started making the rims in 1974 for the 1975 product line.
The reason I chooses these numbers is because you have to change the casting value every Day or Week of production.
The date numbers are either Cast into the Rim (very expensive) or Stamped onto the rim after it’s made (much cheaper to implement).
The W numbers are not straight. Each set of digits is rotated at a different angle, which to me indicates these values changed frequently.
All of the other stamps have the numbers and letters spaced consistently.
Since Oldsmobile started selling 15 inch Rally rims with the 1975 Oldsmobile’s, Ill guess they started making the rims in 1974 for the 1975 product line.
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