What is the purpose of the J or JK on steel wheels?

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What is the purpose of the J or JK on steel wheels? #1109496 11/08/11 07:00 PM 11/08/11 07:00 PM
Joined: Feb 2003 Posts: 1,637 Florida G GMP440 OP top fuel
GMP440 OP top fuel G Joined: Feb 2003 Posts: 1,637 Florida	On the the late 60's manufacture of the plain steel wheels what are the letters on the sizing stand for? For example, on my 68' Coronet the steel wheels are 14" X 5J. Some wheels are JK. Anyone know the answer to this? Thank you. George

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Subject	Posted By	Posted
What is the purpose of the J or JK on steel wheels?	GMP440	11/08/11 11:00 PM
Re: What is the purpose of the J or JK on steel wheels?	John_Kunkel	11/08/11 11:03 PM

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