15 x 10 rims. What's the back spacing?

[DR2000]

What would be the correct back spacing for 15 x 10 rims? I was under the impression that 4 inches or something would be right, but now I'm reading that people use between 6 and 5 for rims that wide.

So what's the correct back spacing? Anyone?

[9C1LT195]

If you are going to widen the 9C1 rims, the backspacing should be around 5.5".

[NJ9C1]

The stock BS for the 9c1 rims are 4 1/8". As you probably know, the stock rear rim is pretty well set into the wheelwell so it's possible to stay at 4 1/8" BS and get the 305 in there. I haven't had my guy widen the stock rims yet so I'm using the chevy truck rim to mount the tire. It's a 15x8 with approx. 4 1/8 BS...it still fits in the well and the 305 tire hasn't broken a bead in almost 30k miles. I pull a 5000# trailer and carry an offroad cycle on a hitch rack without a problem with the narrower rim. The best setup would be a 5-5.5" BS for a 15x10 rim though.

[NJ9C1]

Here's a pic of mine:

[NJ9C1]

Sorry won't let me do it...I'll have to resize.

[DR2000]

Now I'm trying to find rims what will fit the specifications (15 x 10, 5 x 5 bold pattern, 5 - 5.5 back spacing) for a reasonable price. Here is what I found so far:
http://www.rocky-road.com/wheels.html (and they say any side, which can end up being not any size at all)...

If you know of any more sites, please contribute. Thanks.

[DR2000]

I found one more site: http://www.weldracing.com. They've got a lot of wheels which match the specs, but they are kind of expensive.

[NJ9C1]

Any of the following will make wheels for you although not the 9c1 version. I believe Pete Paulsen would convert you existing wheels also.

http://www.petepaulsen.com/HouseOfWheels.htm
wheel vintiques
coker tire

The last 2 you'd have to do a search on as I don't have the site addy here at home.

[9C1LT195]

This is a very popular company to widen existing wheels to any specs, even larger diameter:

http://www.stocktonwheel.com

[LM13]

is there a company that already sells wide rims?
thanx

[9C1LT195]

The above companies should be able to make new rims to your specs. I doubt it would be easy to find rims to fit caprice/impala without a custom order.

[spacefabric]

I say measure your own. I have 15x10's w/ 5.75" backspacing according to the wheel guy... I had to measure my own and got a real custom fit. And our cars differ slightly so what works great on one may look off on another.