: How do you find the Offset for a 2008 Cadillac CTS???

03-03-13, 08:21 AM
I am on the market for some after market 18 inch wheels for my Caddy. I'd initially thought it would be as simple as getting the correct wheel size but now I have to determine the correct offset for the wheel and cannot find any information for this. Can someone point me to where I can get this?

I have my eyes set on a set of wheels (5 x 120 and a 42 offset) but I am not 100% certain that this will fit my car.

Are there any owners of the 2008 Cadillac CTS in this forum that can confirm that a wheel having these specs will fit the vehicle??? Its too much of a costly investment to get wrong, especially when ordering online.


P.S. For any readers that may suppose I have not thoroughly researched the question before posting, I actually have. But the answers have been split between 5 x 120 with a High Offset and 5 x 115 with a High Offset so my reason for this post to acquire a definitive answer.

03-03-13, 03:18 PM
I'm NOT a wheel bling guy, but I believe the wheel size and off set are cast into the back of your rims. use that as a guide.

03-03-13, 03:58 PM
Go to tire rack. Shop wheels. They'll give you size ad offset that will fit your car. Not sure what stock offset is. Sorry

03-03-13, 05:50 PM
Thanks for the replies. I wasn't aware that the offset's were cast into the back of the rims but I'll remember that. I went to tire rack and it appears that they are 5 x 120. The offsets vary but 42 seems to be acceptable so I believe the wheels I'm considering are good for this model.

Greatly appreciate the assistance guys!

03-04-13, 03:19 AM
5 x 120mm High Offset. If you search online enough, you will find someone that says 5 x 115mm will work but it's REALLY not a good idea. It places stress on the wheel studs and can lead to metal fatigue. I haven't measured mine yet but is seems that the stock offset is 48mm but 42mm will work just fine, the whole tire will be sticking out 6mm farther than stock. You're good! :thumbsup:

03-04-13, 05:24 PM
Thanks Black'10CTS4!!! Yeah, I've seen a lot of information referencing the 5 x 115 as well. Aside from a lot of other forums, I've also found reference charts that suggested 5 x 115 as well such as:


But I also found several other reference sites that state 5 x 120 for the 2008 models and up:


The ebay guide says it was (updated 03/02/13) which is very recent. These links in combination with Tire Rack and now your confirmation is more than enough for me. Guess it only goes to show that not everything on the internet is neccessarily accurate by any means.

Thanks for the reassurance!

03-13-13, 10:24 PM
Is the offset and brake clearance different on the 08 CTS. I am also getting the run around. I'm looking at some 18" rims from wheelfire.com Two different reps told me two different things. I was told that the bake clearance was a problem on the cts 08.