Car/Light Truck Rim Specs

[freddrew]

I am looking for a web site that gives the specifications for rims.  I need the diameter, bolt pattern and offset for General Motors rims.  I want to replace the 81 Camero Z28 rims with a standard rim that is 6" to 7" wide and has a lot more backspacing than 4.25".  The front clip is going into a Street Rod and will have a tire to fender issue.

Fred

[Charlie Chops 1940]

You could try an S-10 4WD rim or a 79-85 Riviera, Toronado or Eldorado standard steel rims. They have the most backspace  of 15" 5 on 4-3/4 rims that I know of. Pretty hard to get much more backspace on 6 & 7" rims based on the spider design.

The better plan is to use a narrower subframe. Front steer F-bodies are pretty wide as are the '75 up Novas and the clones. A back steer 68-74 Nova and the clones are a bit narrower. An S-10 is narrower yet but the steering box sets out in front the furthest and radiator fitment can be a problem. Narrowed a-arms will work to help also but that is a costly solution to picking the wrong subframe.

Just my observations from years of subframes....your mileage may vary.

Charlie

[enjenjo]

What Charlie said. You could also use C3 Vette wheels.

[Charlie Chops 1940]

Oh yeah, it would be useful for us to know what kind of car for which we are giving advise.

I don't know of any spec pages that cover width and offset. Maybe there is but I think it's a check the parts deal.

You can do what you want, but correcting a wide sub with different wheels or narrowed a-arms is  usually futile unless the correction is minimal.

Charlie

[freddrew]

I forgot to mention that the clip is going in a 1947 Chev AeroSedan.  I already have the clip so I'd like to run with it.
Fred

[enjenjo]

I've used Vette wheels on a 41 sedan with that clip. worked fine.

[Charlie Chops 1940]

The only problem with that clip and the flat face wheels is that "normal" wheels won't work. I guess I'm just partial to more traditional wheels.

Charlie

[phat46]

Fred.....didn't we talk about this issue a year or so ago!!?  

[GPster]

My neighbor bought a BMW that had those Metric wheel/tires on it and the suggestion at the time was S10 4X4 wheels for the negative off-set to match BMW's off-set. sounded like a good idea at the time but a set of BMW late model wheels/tires appeared. He had to buy billet spacers because the late BMWs had more off-set than the earlier (mid '70s) BMWs did. If I remember correctly the lugs were 5 on 135 CM which was close to 5 on 4 3/4" enough to use?. You might try that way and you might go to 17" rims to give more clearence. GPster