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Will 17 inch Cup II fit 1997 Boxster

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Someone offered to trade my 18 inch turbos for a set of 17 inch Cup IIs in very good shape. Question is, will they fit a boxster? I've been checking pictures and haven't seen a Boxster with them installed. Thanks.

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Owner says they are from his 993. Problem is they are being shipped in from out of town, and I'm to send mine back on the same truck. I don't have the possibility to try them. Maybe I'll put a hold this trade as I don`t want to get stuck with wheels I can't use. Thanks, I was thinking brake clearances and didn't even think about offsets, as it's a Porsche rim. It's also because I have a set of 16 inch Cup I, and they fit fine.

Edited by bigdog
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From what I can find out, the Cup II's have the following dimensions:

Front - 17x7 et 55

Rear - 17x9 et 55

Compare this to stock Boxster 17" wheels:

Front - 17x7 et 55

Rear - 17x8.5 et 50 (or 48 depending on the wheel)

Based on these numbers, the inside edge of the Cup II's will be 1/2" closer to the strut than stock wheels. In my experience, this will not cause fitment issues. Even if it does, any problems can easily be fixed with a small (5mm) spacer.

Good Luck,


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  • 2 weeks later...

Yep, that's them alright. That's the first I've seen so far on a Boxster. Looks good, and a nice ride by the way. I think I can see my red brakes a little better with the Cup I though :) Let's see if those Cup IIs finally get here, and I can get a closer look. Thanks for answering and I bet you have some fun out on those open highways!

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