back spacing me out

[1969 runner]

First off I would like to say, I am new to the forum and mopar muscle.

I recently picked up a 69 RR from a friend and am learning the mopar way. Things are different compared to my 69 mustang fast back 428CJ.

Anyway I have been reading for hours on wheels. Specifically the backspacing needed to clear disc brake conversions.

When I purchased the RR the previous owner included a disc brake conversion kit (MBM) and complete front end rebuild kit (just suspension).

My question is can anyone tell me what wheels and tires I need to purchase to fit with the disc conversion? The manual just says “must use 15" wheels”.

I did read a long article in mopar muscle mag that shows how to measure for backspacing, but they lost me when they started explaining how to measure the front. I guess what I am begging for is someone who has done the math to spoon feed me the dimensions.

This will be the only time I beg for a handout:binkybaby:. From now on I will be sure to contribute to this forum. I am running out of hair to pull on this one.:icon_hang:

Thanks in advance

 

[waygun]

15X7 with 4" backspacing is plenty to clear the brakes.
15X6 with 3.75" backspacing is acceptable.
That's what the factory used in later years with factory disc brakes,..
0 offset,+6 offset is good.-12 may not clear--test fit first before mounting the tire.
Anything with a big positive offset is best left for the FWD ricers,IMHO.
Here is a site i use-play with it and it will give you a better visual understanding of backspacing and offset.
Hope this helps
http://www.rimsntires.com/specs.jsp?item=Wheel-Tire