70 Rally Wheel vs. 73 Rally Wheel

[Mike T.]

I am putting a set of 73 rims on my 70.
I'm thinking they are the same, but my main concern is the 70 is stamped "15 X 8 JJ" and the 73 is just stamped "15 X 8" without the "JJ."
Searching the archives, someone mentioned the "JJ" refers to the "contour" of the wheel.
Is the 73 AZ wheel stamped 15 X 8 different than the 70 AZ wheel that is stamped 15 X 8 JJ?
Thanks.

[John H.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

Is the 73 AZ wheel stamped 15 X 8 different than the 70 AZ wheel that is stamped 15 X 8 JJ?
Thanks.

Mike -

As far as I know, any of the '69-'82 wheels stamped "AZ" adjacent to the valve stem are physically and dimensionally identical.

[Terry M.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

Mike you don't tell us what you intend to do with those 1973 wheels -- that is use them for judging??

If so you should know there will be a difference in paint hue even though they all will be painted Argent Silver.

[Joe L.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

I am putting a set of 73 rims on my 70.
I'm thinking they are the same, but my main concern is the 70 is stamped "15 X 8 JJ" and the 73 is just stamped "15 X 8" without the "JJ."
Searching the archives, someone mentioned the "JJ" refers to the "contour" of the wheel.
Is the 73 AZ wheel stamped 15 X 8 different than the 70 AZ wheel that is stamped 15 X 8 JJ?
Thanks.

Mike------


There is a VERY SLIGHT difference in the 1970 versus 1973 wheel. Believe me, nobody is going to notice it and I'm not going to say what it is lest I start a new "thing". Also, just to be clear, the wheels are 100% functionally interchangeable. The difference has absolutely nothing to do with functionality.

[Mike T.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

John, Terry and Joe. Thanks for the help.
I'm not going to have it judged, but I want to bring it back to original as much as practical.
Not concerned about the paint hue at this point.
If there is so small a difference that nobody will notice except Joe, then I'm gonna run the 73's, hope Joe keeps the secret and call it a day.
Thanks again guys.

[Harmon C.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

At one time rally wheels had a weld bead or B-B by 73 it was gone.

[Keith L.]

Re: 70 Rally Wheel vs. 73 Rally Wheel

Or maybe it's like the difference between the Z28 YH and the later FW 15X7s.