Carrera III 18" wheel on 987S?

[Carl AMG]

I am trying to figure out what I am going to do for 18" wheels on my '06 Boxster S and have been looking into these wheels as well. First the front wheels will fit as I have found the width and offset to be identical to the 18" wheels for a 987. However, the rear wheels are 10" wide with a much different offset than the 9" wide 18" Boxster S wheel (and than my 19" Carrera S wheel).

This doesn't necessarily mean they will not fit but may require spacers to address the offset. My 19" wheels are 9.5" wide so the additional half inch of width may not be an issue. I'm really not sure and don't know how you could find out without someone actually test fitting them to a car. I'd ask the dealer and see what they say but wouldn't be 100% comfortable until someone mount them to a 987 to find out.

I think I will end up with some take off 18" Boxster S wheels for my track wheels but I may wait (how long??)to see if I can get some Cayman S 18" wheels as I like the style much better.