I had a little time after work today so I corner weighted the Cobalt SS/TC. I've seen weights between 2975 (GM) and 2935 (Road and Track) and I wanted to find out how much a SS/TC with a Sunroof weighed.

My Results:

SPECS:
2008 SS/TC
Options: Low Wing, CD Changer, Sunroof, Smokers Pack
Fuel: 1/4 tank
Mods: Sportline Springs, Window Tint
Weight Reduction Mods: None


WEIGHT: 2907 Cross Weight: 51.0% v. 48.5%

LF: 920.7 RF: 862.2
LR: 561.0 RR: 563.0

WEIGHT WITHOUT SPARE/JACK: 2894

LF: 920.0 RF: 868
LR: 562.0 RR: 542

WEIGHT WITHOUT SPARE/JACK - WITH 201lb Driver: 3087

LF: 1002 RF: 890
LR: 620 RR: 572


WEIGHT WITH SPARE - WITH 201lb Driver

LF: 999 RF: 888.1
LR: 630.1 RR: 591.0


So with the spare, the results are slightly better than without (when the driver is added). All in all, this is a very light car by 2008 standards.

 

Excellent.

 

Good post.

The Cobalt SS is lighter than my '07 Z06. I wonder how much the back seat weighs.

I'm gonna pick one up for my Daily commute.

 

I'm surprised to see a car like the cobalt weight in at less than 2900 - by today's standards. And its not a small car.

I wonder without the sunroof and some weight reduction (hood, interior, etc) - if the car could get down to 2600's.

 

Nice work, Joe. Mine's a tad heavier...about 2940, but it's loaded. Thanks!

 

What are the front fenders made of?

 

sticky

 

Kinda surprised it's a bit heavier than the SS/SCs. I have all the cross weight info from mine somewhere. All I remember is w/o driver with 1/4 tank of gas it weighed in at 2840. That's loaded with everything except G85.

 

It would be interesting to know where all of the weight increase(s) come from. Of course, mine is loaded, so it's the heaviest SS possible.

Some of the additional weight in TC may well come from ongoing chassis and NVH improvements. The front brakes are heavier. Side airbags add some too.

Steel.

 

Awesome - I'm glad you are posting this information.

I was trying to figure out how to get more weight on the rear, which is why I want a larger wing - track day's.

Again, awesome - thanks. Glad i can leave the spare in there, that doesn't work on the front wheels FYI.

JK

 

I've got side airbags in my 05.

Actually everything I have:
Sunroof
High Rise
Pioneer sound system w/sub
OnStar
XM
Side airbags

I would guess brakes and possibly seats as well as beefed up suspension parts.

Coilovers. You know the corner weights you can compensate with suspension adjustments.

 

WEIGHT WITHOUT SPARE/JACK: 2894

I added your #'s given = 2892

Anyway, spare/jack = 13-15 LBS with your #'s

 

Sounds about right.

 

lil donut spares weigh very little.

Your best bet to knock off some quick weight for track days is the support plate under the rear seat.

 

Remember - your cross weights will vary b/c this was done with a set of Eibachs installed.

The spare doesnt weight much at all. What's funny is - look at the rear weights with the jack/spare. They are nearly spot on. Impressive. The battery is in the trunk so no doubt they moved the battery around to get a good weight distribution before finally strapping it down. If you had a set of coilovers, you'd could play around with the heights to lower the LF weight - which i believe is done by raising the LR - which increases the RF - and decreases the LF. For drag racing, wieght up front is a good thing.

Something like that. You could also do some static weight changes, but thats more diff.

I suspect the front brakes may be a tad lighter since the aluminum brembos offset the larger rotor diameter. We also have aluminum spindles and LCAs - which I dont think the SC has (dunno for sure).

 

That lil thing is like 20 lbs i was shocked with how much it weighs

 

The SS/SC has the aluminum control arms as well.

 

I doubt the calipers are any lighter...they may be aluminum, but they are more massive than the standard iron calipers, and they contain more steel piston weight...probably a toss-up.

 

Yep - I'm thinking maybe a 1lb would be a stretch on the delta. Who knows tho.. But every 1lb unsprung is 7lbs sprung

 

good info........although it seems everything you post is........

 

Thx - just doing my part for the community.