So confusing! Some guy online said it is .88 offset. Another guy selling DG wheels on ebay says the offset is 4 3/8. Wheel Vintiques sells the same wheels but with 4", and 3 3/8 backspacing. What is correct?
Right at the top of this Forum is a sticky titled Guide to Rallye Wheels Chart. Here is the chart: http://www.v8buick.com/attachment.php?attachmentid=158600&d=1264095216 4 3/8" or 4 1/2" back spacing is what you want. That is what the late 60's 14 X 6" wheels came with. Offset and back spacing are two DIFFERENT terms. They are not the same. Back spacing is the distance between the inside bead surface of the wheel, and the mounting surface of the wheel (the surface that sits right up against the brake drum or rotor). Measuring back spacing is EASY. Simply put the wheel outside face down. Put a straight edge across from one bead to the other, and measure down to the mounting surface. Offset is the distance from the CENTER of the wheel to the mounting surface of the wheel. There is positive offset, and negative offset. Positive offset moves the entire wheel towards the center line of the car. Negative offset moves out away from the center line of the car. For example, a 7 inch wheel's center would be 3 1/2". If the mounting surface was 1" towards the outside of the wheel, the wheel would have 1" positive offset. If it was 1" towards the inner surface of the wheel, it would have 1" of negative offset. My first example would have 4 1/2" of back spacing, the second would have 2 1/2" of back spacing respectively. Back spacing is way easier to measure and tells you more IMHO.
Wow, thanks. Do you know of any websites that offer the original specs of the DG wheel? That article you showed me says 67 did not use disc brakes....that's not right....?
Not sure about disc brakes in 67, but all that information should be available in your 1967 Buick Chassis manual. As far as wheels go, I'm only aware of the 15" wheels being reproduced. Steve Caruso (Underdog350) may be able to help you. I suggest you contact him. You have been asking about this for some time now. http://www.v8buick.com/showthread.php?238832-New-reproduction-wheels
14x6 wheels can be made but nobody seems to want them. I do not believe Buick put the chrome 5 spoke rally wheel on cars with the 2 piston disc brakes because they would not clear. They used a Chevy slotted wheel. A 1967 14x6 Buick rally wheel had 4 1/2" back space. I believe it will clear single piston disc brake. Not sure what you are referencing by DG wheel.
Well I went ahead and bought the wheels. Just tried putting them on and they rub this bracket. Am I missing something? I'm hoping this is adjustable...
What wheels did you buy? If they hit, you can't use them. Did you verify the back spacing? Not all 14 X 6" wheels can be used with disc brakes.
DG wheels are the correct code exact wheels my car came with originally with disc brakes. I have gm spindles, gm calipers, so I am stumped as to why the wheels are hitting
Well, the only conclusion I can come to is they are not DG wheels. They might be stamped DG, but the might not be authentic. Are these the original dual piston calipers the car came with?
With the 67's big 4 piston calipers as stated earlier the only 14" wheels that will fit is the slotted wheels like Chevy used as in this document showing Buick's options- My 67 has 14 rallies but it needs a spacer to make the front not rub, I don't like it but its not easy to find the slotted rims that came stock. If I get the cash I think I'll just go with 15" rim's. I guess I need to edit this; My 67 front Disk brake's look different than yours but here's a pick of whats on my car with the spacer it looks different than your but it might help
Well my calipers are single piston. Now I'm worried my car actually didn't come with discs and I bought these original wheels for nothing.
Single piston calipers started in 70? You need 15" wheels. Resell the 14" wheels and get 15" if you want Rallye wheels.
I'm pretty sure 67 & 68 used the 4 piston caliper's they changed in 69, I always worried that they changed because there was a problem but I hope they were just being cheap.
Those are not the 67 calipers on your car. It may have come with them but somebody changed them out because its expensive to fix the 4 piston calipers. They would leak if not used daily but rebuilders put in a stainless steel sleeve and this helps.
As the others pointed out, the caliper you pictured is the '69-up single piston style that someone swapped onto your car. A quick and simple way to see if your car may have come with disc brakes when new is to see if it has the small brass block mounted just below the master cylinder. It was only included on the disc brake cars and was totally different than the valve mounted in the same location on the later cars (like a '70 with disc brakes). Of course someone could also have removed it, but if it is there, it's a very good idication that they car had the 4-piston discs when it was new. Look at the attached photo for the brass block.
I could be mistaken (wouldn't be the first time) but I was under the impression that in 67 if you ordered your Skylark/GS with disc brakes, you got the Chevy style rallye wheels (like the Chevelle/Camaro) with beauty ring and small dog dish caps (with Buick centers). The reason was the 14" Buick Rallyes wouldn't clear the caliper. I have seen pics of original 67 and 68 Buicks with the Chevy style wheels. The later (69? early 70's) 15" Buick rallyes should clear the caliper and also give you that original look.
