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View Full Version : Backspacing on factory rims that fit disk brakes


OX1
04-29-2017, 08:51 AM
So my disk brakes move WMS outboard, and my
new rims have a bit less backspacing than the factory
drum rims.

Was hoping some of the "Granada" type rims are closer
in backspacing to the orig drum rims.

I would use them in front and then the rims I bought on
the back, to even things out a bit. Right now my front
tire is almost 2" outboard vs the rear.

simplyconnected
04-29-2017, 04:52 PM
Isn't that due to the spindles you chose to use?

We normally stick with one of two choices because we know they work well; the OEM spindles that came on your Squarebird, fitted with Scarebird (S-10 brackets) OR Granada spindles with Ford calipers. Either fit Granada wheels without spacers but so do a lot of 14" rim offerings from the big parts houses like Summit. Modern cars all have disk brakes as do most modern 14" wheels. - Dave

OX1
04-29-2017, 06:13 PM
Of course, I suspected that going in. But I still want to know
the backspacing answer.



Isn't that due to the spindles you chose to use?

simplyconnected
04-29-2017, 07:19 PM
This is a typical Granada 14" X 6" wheel w/3-1/2" back spacing used with no spacers:
THIS is the back spacing you want:
http://squarebirds.org/Brakes/DiskBrakeConversion/HowardsWheels/DSCN5046.jpg
These are 6" x 14" Granada wheels that Howard Prout and Ray Clark are using. There isn't much room between the tire and upper "A" arm. I would not go with 4". Summit sells a host of these wheels in different styles. If you cover with a full wheel cover, who knows what's behind it? - Dave

I don't think Squarebird OEM wheels were 14" X 6" so the original backspacing will be quite different. Also, the 'caliper hump' isn't there (which is the REAL issue).

http://importnut.net/article/wheeltech/tech-wheelterms.gif