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Discussion Starter #1 (Edited)
Read through a lot of the older posts in this sub forum as I'm on a mission to put together a set of snow tires and rims before the New England winter hits.

My 95 SS has the factory mags with 255/50-17s, but I never looked at the spare in my trunk but will when I get home from work. Is the steel wheel spare also a 17" or is it the common 15x7?

I was thinking of putting together a set of steelies with the 9C1 center caps, and wondered if you needed the specific 9C1 rims shown here;

https://www.ebay.com/itm/Original-Caprice-9C1-steel-police-wheel-rim-center-caps/303277258371

I copied this text from a previous poster (thanks for this)

Following tires spec for 91-96 B-cars:
235/75R15 (28.87") OEM Cadillac Fleetwoods with V4P Tow, V4U Limo, B9Q Hearse, or B05 Armour
225/75R15 (28.28") OEM for 91-96 B-wagons
235/70R15 (27.95") OEM for 91-96 B- & D-cars with V92, or 9C1s with LT1
215/75R15 (27.69") OEM for 91-93 9C6 B-sedans (taxis) with LB4 4.3L V6
225/70R15 (27.40") OEM for 94-96 B-sedans with L99 4.3L V8, 9C1s with L99 [and some with LT1], & 1A2s
205/75R15 (27.10") OEM for 91 sedans (GM themselves 'retconned' this spec, however)
255/50R17 (27.03") OEM for 94-96 B-sedans with WX3 or WX8 <== This is obviously Impala SS

215/70R15, 26.85" tall. Think GM stopped specifying these for Caprices in 1990?
Anyway, 215/75R15 looks like a wiser choice than either 205/75R15, or 215/70R15.
Or, try to find those skinny emergency donut spare tires in junkyards? <=== Mine is a full size spare, not a donut

Size: 15 x 7. Bolt Pattern: 5 x 127mm

So if I wanted to buy those center caps, would they fit on the Impala SS factory spare rim? You can see on the auction pics above that there are 3 mounting screws for the 9C1 center caps, didn't know if all 15x7s had the holes for these or if you need 9C1 style rims?

EDIT: Looks like I may have answered my own question here, more Google searching shows 15x7 ID RGR is what I'm looking for. Did a search on the parts listing on car-part.com
 

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Thanks for putting the tire information in one place.


From my experience with boxys and other RWD cars I recommend 225 70 15 for most urban winter driving. The extra surface area is good for the ice. If you experience deep snow all the time 215/75R15 might be a better choice. Enter the debate about thinner tires pressing down to the road surface in heavy snow.


I have done no research but you may find a truck wheel package with similar center caps to the 9C1. The rim may be 8" and you would have to verify the bolt pattern and hub diameter. They may be as collectable as the 9C1 wheels now.
 

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Discussion Starter #3
I can't take credit for the summary listing, it was from another forum member.

I've got a call into a local junkyard for 18 hole 9C1 rims, if they are decent I'll pick them up on the way home.

Snow can get pretty deep in southern NH, but I will be advising my 18yo to NOT drive with more than 1" on the ground. I've had many years experience driving RWD sedans in New England winters on ALL SEASONS when I was younger. No way I'd ever not have a full set of snow tires with studded rears ever again.
 

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Discussion Starter #4
Went shopping on Tire Rack and got a set of 4 BLIZZAK WS80 - SIZE: 215/70R15 for 70ea, with 80$ rebate Visa card, so 200$ shipped! Whoohoo!
 

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Discussion Starter #5
Picked up set of junkyard 9C1 rims for 120$

Tried to edit previous post but was having issues, so here you go;





Pix in my driveway after a quick pressure wash. Will get a fresh wire brush and some sandpaper to prep the wheels for fresh coat of rattle can enamel.

Can anyone suggest what color code/brand of Krylon/Rustoleum is the best match for the factory glossy black?
 

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…..255/50R17 (27.03") OEM for 94-96 B-sedans with WX3 or WX8 <== This is obviously Impala SS…...
I'm nitpicking and off-topic on this, but the WX8 is the Caprice SS that was exported to the Arabian Peninsula.

Extremely similar to the Impala SS....but not exactly. ;)

KW
 

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The owners manual says, for the SS B-body, can't use chains as the wheel well clearance is not enough. For those who do drive in snow conditions than they either run a snow tire or different size tire and/or rim combo or deal with the slip & slide of the stock 255/50x17 tires

On a side note...

The stock spare is a smaller tire than the SS wheel size....which led to a Class action suit. I opted in for that suit when I got the card WAY back when (it was mailed to original purchasers of the SS). The suit claimed the window sticker says "full size spare" but it was not the size of the stock SS tire. The Petitioner prevailed and GM settlement was a $250 check. I bought a new SS rim back then from Dal. IIRC it was about $120 and a new 255/50x17 tire for about $125 from tire store and that has been my spare for 20 years

Just had to make a new hold down arm out of All-Thread and bent it using the stock one as a template but made it about 1 1/2" longer. Spare cover fits perfectly over the "full" size SS tire/rim
 

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Discussion Starter #8
Finally got around to start refinishing the 9C1 steelies. I started out with a regular wire brush, but the amount of rust and scratches on the inside lip where a hubcap was grabbing the wheel needed some more serious sanding. Went out to Lowes and got a wire wheel kit and went through 3 charged batteries on 2 cordless drills to smooth them out. Last shot has the 1st coat of rattle can gloss Rustoleum, put on 2nd coat this morning. Will finish up by hitting the back side of the wheel with what's left in the can and then mounting next week with the new Chevy logo center caps.





 

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… copied this text from Marky Dissod (no thanks needed)

Following tires spec for 91-96 B-cars:
235/75R15 (28.87") OEM Cadillac Fleetwoods with V4P Tow, V4U Limo, B9Q Hearse, or B05 Armour
225/75R15 (28.28") OEM for 91-96 B-wagons
235/70R15 (27.95") OEM for 91-96 B- & D-cars with V92, or 9C1s with LT1
215/75R15 (27.69") OEM for 91-93 9C6 B-sedans (taxis) with LB4 4.3L V6
225/70R15 (27.40") OEM for 94-96 B-sedans with L99 4.3L V8, 9C1s with L99 [and some with LT1], & 1A2s
205/75R15 (27.10") OEM for 91 sedans (GM themselves 'retconned' this spec, however)
255/50R17 (27.03") OEM for 94-96 B-sedans with WX3 or WX8

215/70R15, 26.85" tall. Think GM stopped specifying these for Caprices in 1990?
Anyway, 215/75R15 looks like a wiser choice than either 205/75R15, or 215/70R15.
Or, try to find those skinny emergency donut spare tires in junkyards?

The stock spare is a smaller tire than the SS wheel size … which led to a Class action suit. I opted in for that suit when I got the card WAY back when (it was mailed to original purchasers of the SS).
The suit claimed the window sticker says "full size spare" but it was not the size of the stock SS tire. The Petitioner prevailed and GM settlement was a $250 check. I bought a new SS rim back then from Dal.
IIRC it was about $120 and a new 255/50R17 tire for about $125 from tire store and that has been my spare for 20 years.

Just had to make a new hold down arm out of All-Thread and bent it using the stock one as a template but made it about 1 1/2" longer. Spare cover fits perfectly over the "full" size SS tire/rim.
Was the size that led to the class action lawsuit 215/70R15?
 

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Was the size that led to the class action lawsuit 215/70R15?
I would have to look at what size my "been in attic for 22 years" factory spare is but it certainly was not a 255/50 x 17

Bottom line it was not "full size" compared to the tire size that came on the SS. Different diameter tire on a LS rear end is no good and certainly a steering problem if you use as a front spare other than limp to the nearest tire place.

The post card I got way back when saying to "op in" and mail back did not have details other than XX (plaintiff name) vs GM case # xxx... with a description "spare tire not full size" as noted on every window sticker of the SS

It took several months, maybe a year and one day a letter from the plaintiff attorneys showed up saying the settlement was either a $250 check or a gift cert for $250 good for any GM parts at the dealership. I took the check as back then Dal was the go to for SS parts. I suspect the dealership parts counter would have charged WAY more for the new SS rim than the $125 from Dal. So for the $250 I got a SS rim and new 255/50 x 17 tire

Ace, apologies for taking the left turn in your thread. Your rims are looking good.
 
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