square slot rallys...

[fitz]

 I've torn a bunch of these trucks apart, never came across any 10" factory rims.

[low budget]

I know what everybody is saying, but I found this on Craigs list just now.  He has 15x10's here.  Just wanted to show this...




http://columbus.craigslist.org/cto/1158648361.html

[Captkaos]

A) those aren't truck rallys
B) I can post a picture of a set of wheels and call them 15x12's.

There were no 10" rallys from GM.  I have had A LOT of people call the 8" 10's and they measure across the OUTSIDE of the wheel and get a number larger than 8" (don't remember the actual number but it isn't 10) and l I turned them over and pointed to the 15x8 on the back.

[nogomoto]

I made a trip down to the place I was talkin about and talked to quite a few people. Serveral of them were surprised (including me) with what I found. The offsets were different on the 6lug on a friends truck giving the appearance of a wider wheel. I tracked down the guy with the 10" wide rims on the one owner truck. They are NOT GM wheels but were purchased at a building beside the GM dealership the day the truck arrived. A few of the older guys who swore up and down they had 10s said that the rim they had were not a full 10" wide but were more than 8" and that's why they considered them to be 10s... even though 15x8 was stamped in the back.


Good to know. Interesting thread for sure.

[VileZambonie]

I have a set and measured them yesterday. They are 15x8.5

[team39763]

I have the wheelvintiques ones on my truck and I like them.  I think I bought mine for $85 a piece.  They are 15X10's.

[choptop]

GM never offered Rallys in any lug pattern that were 10" wide from the factory.

http://wheelvintiques.com/shopsite_sc/store/html/page38.html

What are these?

They look like 15x8s to me, kinda hard to see tell for sure. I think the tire makes them look wider. Here's mine and I know they are 15x8's the second pic are aftermarket but are 15x10s. You can see a difference. I too have never seen a factory 15x10

[donf]

You guys have me wondering....where do I look on the wheel (rim) for the actual size?
On my 1980 GMC (see pic) I have 15" turbine rims.  They came off a 1976 Firebird Formula and I have 31x10.5 tires on them. Does this mean they are 15 x 10 wheels?

[Captkaos]

Those are probably 15x7's, if they are marked they will be on the back of the rim.

[Blazin]

You must have adapters to get Fire Bird rims on a truck? 10.5 is the width of the tread, can put them on any wheel 7" to 12". They fit the best on 8" to 10" wheels.