Differences between 05-08 GXP?

[Walleyealx]

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

 

[jeffery44]

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

 

[jeffery44]

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.