Ok, I (unfortunately, as of this writing) work for a wheel manufacturer and these posts about wheel fitment drive me insane........



The SS and SS/SC all have a 5-110 pattern, which they share with the new Malibu, HHR, Saturn Sky, L-Series, Pontiac Solstice, G5 and G6. Also the vehicles hub diameter (for the purposes of using hubcentric rings) is 65.1mm.


Other Cobalts have a 4-100 pattern, which is a typical Honda pattern, and widely available. The hub diameter is 57.1mm.




The 5-110 is a rather rare pattern, having only really been used recently by Saab and the mid-90's Cadillac Catera. Therefore, as of this writing, there aren't a lot of wheels available.

Regarding wheels being called "universal". There is no such thing as a "universal" 5-lug, 4-lug, 6-lug wheel. Most wheels are typically drilled with 2 bolt patterns, with some exposed lug wheels drilled with only one. The most common patterns drilled in 5 lug are 5-114.3 and 5-100.

Another possibility for wheels for your SS is to have wheels of a different pattern "inserted". What this means is, a pattern on a wheel is re-drilled and a high grade steel insert is pounded into the wheel. This isn't commonly done on open face (no center cap) wheels, as it might not look good. Also another concern is safety. I just had this done to some wheels, with positive results. I'm happy with the appearance, and I've tested them from 0-125mph, with no vibrations or any other problems. For a retail customer, depending on the company this service can range from $25 per wheel up. You also need to make sure that who you're dealing with, frankly, knows what they are doing. And always use hubcentric rings as well.




http://www.erod.com/temp/445cobalt3.JPG



edit: Thought of something else. This is a useful site to compare how much a different tire size will affect your speedometer, odometer, etc.

.http://www.1010tires.com/TireSizeCalculator.asp

For example, it tells me by switching from 215/40/18s to my current 225/40/18s my speedo is now 1.254% too slow, etc etc.

(Anything within 3% is typically considered acceptable)



edit number 2: All of the Cobalts use a 12x1.5mm thread pitch lugnut.


edit number 3: The ss/sc has a stock wheel width of 18x7 NOT 18x7.5. Not sure on the ss 17"s.

edit number 4: Here is a pict of the info on my OEM 18" ss/sc 2006 wheel.





.http://www.erod.com/temp/sssc18oemwheelspecs.jpg


edit number 5:

Here is a very easy to use site to find a cars bolt patterns/recommended tire sizes, etc.

http://www.bigwheels.net

edit 6: The stock wheels weigh 24 Lbs. (courtesy Chevypowered)

edit 7: Here is an explanation of wheel offset.
http://www.discounttiredirect.com/direct/brochure/info/tmpInfoWheelOffsets.jsp

edit 8:
SS torque spec: 100 ft/lbs

http://www.eminemweb.com/board/images/smilies/ty.gif All the wheel posts are getting annoying.

I think we can all agree that 5x110 sucks.

The Grand Am Cup Cobalts switched out to a different bolt pattern from a ... Grand Am. I think all they had to do for that was the hub and bearing. How much do you think that would be? I bet it'd be easier to do a group buy on some Rota wheels ( If we get 10 people they will do the 5x110) I saw it on the redline forum.

Going to change hub assemblies on your new, still under warranty, car?

Wouldn't recommend that.

Moving to How-To

The Grand Am Cup Cobalts switched out to a different bolt pattern from a ... Grand Am. I think all they had to do for that was the hub and bearing. How much do you think that would be? I bet it'd be easier to do a group buy on some Rota wheels ( If we get 10 people they will do the 5x110) I saw it on the redline forum.

Except there are 10 cobalts with the same wheels out there :(

The changed the hubs on the GAC car because the grand am hubs/bears are more heavy duty.

When looking at wheels I see different offsets. What offsets can I use on the SS/SC

Except there are 10 cobalts with the same wheels out there :(

The changed the hubs on the GAC car because the grand am hubs/bears are more heavy duty.

The changed hubs were also done because it would allow for a wider variety of racing wheels. <-- from the PDF about the GAC's

When looking at wheels I see different offsets. What offsets can I use on the SS/SC


Really a few MM makes no difference. Anything +38 - +45 should be a-ok.

The winter 18"s I bought are..........+40.

Our bolt pattern blows ass but Im trying to help. Thread that I just keep building on, link below

SS S/C Wheels (http://www.cobaltss.net/forums/showthread.php?t=7565)

does that offset all work for the base cobalt as well?

does that offset all work for the base cobalt as well?


Yes....

is +38 more inward in the fender then +42?? cause i'm worried that if i get 18" rim with a 225/40/18 tire it might rub the strut tower if i buy the wrong offset.....

is +38 more inward in the fender then +42?? cause i'm worried that if i get 18" rim with a 225/40/18 tire it might rub the strut tower if i buy the wrong offset.....

I have 225/40/18s on right now, with 18x7.5" rims with a +40 offset.

Plenty of clearance, and springs on order.


+42 would mean that overall, the rim would be sucked into the body of the car by 4mm from a +38 rim.

Consider as well that 4mm = 0.1574803 inch. A negligable difference.

so basically what you are saying is there will be no rubbing with a offset from +38 to +45.. thanx for ur help, by the way what kind of spring are you planning on getting?

Sure.

Eibach Sportlines. Should be here in a few days from Gravana.

I believe the Solstice also has the 5x110 bolt pattern... Offset is a bit bigger, but it would be sweet on the SSsc with the Solstice stock 245/45/18 tires!

Also, it would push the demand for this bolt pattern!

http://www.solsticeforum.com/forum/archive/index.php/t-2273.html

Ok, reading this... i dont understand... Im wanting to buy some Konig Trouble 18" wheels. They are pattern 4x114.3... will that fit my 06 Cobalt SS/SC?? Thanks.

Ok, reading this... i dont understand... Im wanting to buy some Konig Trouble 18" wheels. They are pattern 4x114.3... will that fit my 06 Cobalt SS/SC?? Thanks.


um......4-114.3 is a 4 lug wheel. So no, you need 5-110.

Hey Folks.. just thought I'd post my 2 cents seeing that I just went in today to try to get winter tires, etc... at my local dealer.

They are quite nice in there and know me by name, so they brought my car in and we tried a few things with the steelies they had..

a) 16" 5x100.. (they weren't sure of the bolt pattern) so we put that on and it just simply didn't fit.

b) 15" 5x110.. fit perfectly as far as bolt pattern goes of course, but the calipers were in the way and it wouldn't go all the way back.. no dice.

c) 16" 5x110.. this was the last one they tried.. and success! they were only 59.99 too, sweet dealio.. I will have to purchase new nuts however for the wheels too, since in order to get the steels tight, I'd have to pop right through the ones for the stock wheels. (the stock wheels are thicker on the bolts).

When we went to look for tires, I think someone already mentioned it here, our complete radius stock tires is about 25.6", if you get 205/60/16 tires.. that would put you in the facinity of 25.7" which should be just fine.

So that's where I'm at now, spent $282 approx on the steel rims taxes in.. now to get some tires.

What I'm hoping to do is keep the steelies and throw some shitty grippy 16" tires on it next summer for some racing action :) while keeping my 18" Pirellis for the ole pleasure cruises and street.

Just my 2 cents.. hope I got all my facts straight ;-) :ca:

Cheers All!

The stock wheels weigh 24 Lbs just got them weighed, might be good info for someone looking for some light or lighters wheels.

From GM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

" Although not required for drag-strip application, A Colbolt SS Suspension Kit with five lug nuts hubs and disc brakes may be installed in base (non ss) option level Colbolts. The wheel bolt pattern can be changed by installing oversize studs. This will allow for a wider wheel selection. The wheel stud pattern is 5 by 4.5 in. An upgraded sway bar is also included ."

That is out of the Cobalt Phase5 build-up. 5x4.5 is 5x114.3 COOL! Ford wheels will fit SS cobalts!!!!!!!!!!!

5x110 :lol:


GM Spelled Cobalt wrong, hmm?

Call me crazy, but as opposed to changing the bolt pattern on a new car, I would sooner work on getting a wheel that would just fit.

Not all Fords are 5-114 also......

why do you not recommend wheels spacers? Like the Eibach Pro Spacers for example....

Adapters are what I really don't recommend. Spacers, eh, I just feel a lot better with a wheel direct to the hub, simply enough. :) Let alone stock length studs+spacers+stock or equal length aftermarket lugs. eek.

erod did you lower your car yet on sportlines? if so is there any rubbage?

Still sitting in my house, I haven't driven the car in about 4 weeks since I waxed it and was going to be out of town the last two weekends. I'm 100% sure there won't be any problems. ;)

The 5x110 bolt pattern is identical to wheels for a Saturn L series.
The Saturn L series have wheels and brakes identical to Sab 9-3 & 9-5.
I have purchased some 15x6 Ronal LV aluminum wheels for my Saturn L. The Saturn uses 11.38 in diameter front rotors. These rotors should fit Cobalt SS-they are 0.22 smaller in diameter, but have never had them warp and i drive and brake really hard.
I know for a fact that Ronal makes 15,16,17,18 in wheels with the proper bolt pattern to fit Cobalt SS. I live near Mississauga, Ontario, Canada and purchesd my wheels from Tireworks http://www.tireworks.ca/

Check out Ronal USA http://www.ronalusa.com/wheels.html

My Saturn is soon to be traded in for Cobalt SS 2.4 5sp.

Whats the offset of the stock 18" rims on the SS/SC?

42.........

isn't it bad to have a offset different then factory offset. I heard if change the offset u have a better chance of a lug nut breaking while driving? Also is +45 offset more in the fender than the +38 offset?
+45 is in closer than a +35 which pushes the rim out away from the hub (all this is centerline mounting point speak think of it this way your rim, the middle if you have a +35mm Offset it is 35mm away from centerline, a +45 is 45mm away which sends the rim further in the wheelwell :twothumbs
Pushing rims out past the fenderlip increases your track and sometimes stress on the wheel bearings :)

Hate trying to explain offset without a picture.

I added one to the first post in the thread.

Adapters are what I really don't recommend. Spacers, eh, I just feel a lot better with a wheel direct to the hub, simply enough. :) Let alone stock length studs+spacers+stock or equal length aftermarket lugs. eek.

why dont you recommend adapters? i got some for my 01 camaro a while back so im thinking on getting the adapters so i can actually find a good rim (im majorly picky)

Hey guys,
After a lot fo hassles and more help from this forum than I got from my Stealership, I finally have 16" steel rims and Goodyear Nordic Studded winter tires for my 06 SS 2.4l.
The Stealership where I bought it never could tell me what steel rim to go with. If it wasn't for the info provided in this section, I would have had nothing to go on. Eventually, I found a dealership 3 hours away that sold me steel wheels.
After so many run-arounds with the stealership, I wasn't feeling too confident about fitment so I had them test fitted before I bought the tires. It worked!
The GM part numbers from the steel wheels are 9595769. This is a 7" wide rim.
I did not need new lug nuts. I guess the offset was enough to avoid it.
For the wheels, I bought 205/55/16 Goodyear Nordics (studded).
Tire price at Canadian Tire for tires, stem, balancing, install, studding and taxes (14%) came to $565.00 plus almost $300 for the wheels.
These are a new tire from Goodyear so it will interesting to see how they perform. I've used studded tires on all my vehicles. I've driven sporty cars all through our harshest winters and there is something just innately gratifying about passing a 4x4 on slippery roads, as they struggle on all-season tires. :-)

Special thanks to Erod and Raff for their very useful posts and updating this section.

Here is another site:

http://www.dakota-truck.net/TIRECALC/tirecalc.html

This will let you input most tire sizes to bring up a chart showing difference in tire height for different profiles (20 to 95) ranging from a tire size of 12 to 25 inches. You can then hit compare, under full analysis, to get difference in circumference as well as speedometer/odometer error. You can also calculate rpm and effective gear ratio changes. Hope this is useful.

they are 5X110

I thought they were 5x100 but one rim shop in my area told me that according to their computer the 06 ss is 5x110? I am very confused. Getting different numbers everywhere.

My head hurts.

Please read the first post in this thread.

does anyone know what the saab bolt pattern is? i saw a nice set of wheels on a viggen and the guy said he may get rid of them. i even like the stock 5 spoked that come on a viggen. would they match up on a cobalt ss?

More info for you, the stock LS rims off the "sport" model (16" ones) are 16x6.5". Oh, and you can wedge 225 width tires on them if your tire guy knows what he's doing :)

Does anyone have any hard data on the 07 Cobalt bolt patterns? I just looked at 3 '07 Cobalt LT's. 2 had 5x110 16" hubcaps/steel wheels and one had 4x100 15" aluminum wheels.

i dont like spacers, adapters or anything like that....i dont like selling them to ANYONE at our shop.

got a question, well the other night i busted a tire and had to get a new one. well the only size they had that would fit my car was 225/40/18. I couldnt wait for a day or two so i just grabbed it. first post says our rims are 18x7 but the 225/40/18 will only fit on a 7.5-9" wide rim. can anybody explain this and also can i go up to a 235 or 245 series tire on the stock rim and be fine with it and the clearance.

How would you figure out the hub diameter in mm for a diffrent rim?

Will a 18x8 with a 40 offset rim fit a cobalt ss supercharged?

So does 18x8 fit on our car ( looking at sky rims to put on, except aftermarket ones ). I believe tis 18x8 at 45+. Just curious, so I don't go out and spend the money and then am unable to use said wheels.

i want to ask the same question, so bump to anwser us 3 please
oh ya

My 18X7.5 rims hit my front brake... Why is this?

offset... what offset did you get?

can anybody tell me the maximum size rim that you can have on the 06 ss/sc and tire size

im thinking about buying a set of motegi dp12 for my 07 ls coupe...they are 18x7.5 with a 45mm offset....will this be ok....i dont want to go get them if i dont need to

anyone know the weight of the stock 16's on an LS?
I don't, but a SS/SC 18" with tire weighs 52-55 lbs. I don't remember which it was before I worked at Gravana and was just helping out on the widebody project.

Has anybody tried 19's yet?

mmmm.......

http://www.cobaltss.net/forums/showthread.php?t=72103


20"s are fine also of course, with 225/30/20s.

Erod edit: Wheel spacer/adapter info:



either get them drilled, get new hubs, or get a wheel spacer/adapter (http://www.skulte.com/info_pages.php/pages_id/3)

Alright. Going to lock this and delete random posts. Please post in the w/t forum your specific questions with ACCURATE, COMPLETE SUBJECTS. If you have anything useful and informational for this sticky PM it to me, etc.

Thanks :)