Thread: Differences between 05-08 GXP?

I've gotten a lot of help so far from you guys and I thank you very much for that.

I have one more question which I'm sure has been answered on here before, but I was unable to find an old thread.

Are there any major differences between the 05, 06, 07, and 08 GXP's? From what I have gathered, the 05 and 06 models have real "alcoa" rims. Also, the later the model year the more options that became standard.

Anything else?

Thanks

My 07 has real alcoa wheels. At least thats whats imprinted on the rim itself.

I understand that the computer also displays more info. Like actual tire pressure on each tire (07, 08), Side impact airbags available also in 07 and 08.