Cup 2 wheels on Boxster S (986)

[Robert993TT]

Own a set of cup 2 wheels. The rear are 8" winter version for the widebody 993. ET is 30. Do they fit a Boxster S? Was thinking 225/45/17 would be good in the snow if it comes to that. The front are the same as standard cup 2. ET is 55. They fit the Boxster.

I used the cup 2 wheels during winter storage of my 993 turbo.

Now that I have the Boxster with intention to drive in lower temperatures as semi-daily driver. I think the winter wheels can be of better use on the Boxster.

An option to above is to buy a second set of wheels specific to the Boxster. What wheel and tire dimensions would you recommend?

[rick3000]

I have a second set of rims with snow tires for the winter. I am not an expert on rim/tire sizing, however if the cup wheels are the regular Porsche 17" size, I would recommend going as narrow as possible. When I replace my snow tires later this year I will be going for 205/50/17 and 225/45/17.

Here is a PDF that will help:

[Robert993TT]

Thank you for the PDF. It was most helpful to see what dimensions Porsche recommended.

With spacers the 8" rear 993 WB Cup 2 wheel should fit. In my experience narrow winter tires are what one should aim for. Much better in the snow. Taller sidewall means better comfort and it saves the wheels from curbing a bit more. It´s not always possible to see whats underneath snow unfortunately.

With that said is there anyone who use wider 17" 255/40 winter tires? They might be more stabil in higher speeds when the roads are free from is and snow. But of course not as good in deeper snow. In my case it would mean sourcing a set of wider rear 9" Cup 2 wheels later on if I want to go in that direction.

However I think I will be just fine with 17" 225/45.

[rick3000]

My current set of snow tires have 255 rears, however I cannot compare to the 225 because I haven't used those yet. I have read of a few people who run regular tires that are 225 front and rear, so I don't think the narrower tire should be an issue at highway speed.

I have never had an issue with the 255's but I would like to try something narrower next. Obviously the Boxster is not a 4x4, so driving on snow takes some effort, but I have never had any major issues.

[Robert993TT]

I just test mounted the wheels at the tire dealer. The rear fit the Boxster S without spacers. The fronts where never an issue.

I just noted that I made a misstake. The ET on the cup 2 wheel that I use in the rear is 30. Not 70 as I originally posted in the first post.
Part no of the wheels are:

Front: 993 362 124 00
Rear: 993 362 126 02

For future reference of anyone is wondering.