9C1 rims: wheel stud/ tire ?'s

Hi all, related to 94 caprice wagon:
I am hoping those of you that have or had the 9C1 rims can weigh in: I picked up a set off of eBay, and it seems the off set differs from the stock steelies as the wheel studs don't protrude as far from the bolt holes. May have a 1/2" of stud showing at most. Is that enough to safely bolt up to,or do I need to add longer studs? Did a ton of searches on this topic but didn't find any information. Also tire size for these?? I'd like 255/60/15, but curious what may be my options. Thanks. Hopefully they are 9C1 rims and not N99 or something else.

Sounds like a FWD offset.

Andebe wrote:

Sounds like a FWD offset.

Thanks.weren't all of three 9C1 cars RWD? Sounds like I may need to look into some spacers.

If they're 15", they are RWD. The FWD 9C1 wheels are 16". Post a picture, we'll tell you right away what you have.

Thanks, smart idea. I bought 4 and have 1 stand-alone. I'll try to take a few pics in the next day or so and post any codes etc.. on them.thanks again

Dorman box has what seems like codes: K4 up top 94 bottom then K 28A. Other one's: A 23A K4 up top 95 bottom outside diameter of both rim to rim 16"

Well that sucks,hope you can recoup your cash.

I guess I can if I can find what they are. If not I will e bay them with an honest description. Live and learn I guess.

If they were advertised as 9C1 rims, the description is correct.

RPO codes are for general reference only. RPOs can call out different parts across the various GM car lines and years. Sometimes, older codes are recycled into something really different than the original issue.

Good point Rev Bob,thanks. They were also marked as 15",which I thought all 9C1 designated rims were.that these were 16" threw me for a loop. I need to install new wheel studs anyway,so I think I'll install some longer ones and see if they will work. Thanks to all who took the time to respond. I appreciate the knowledge.

Genuine 9C1 wheels, no changing of studs necessary.

Tom

The million dollar picture.thanks. maybe will sell what I have and keep an eye to the forum classifieds for three future.