987S wheels on a 986S

[Docdanracy]

Rears: 9x18 ET43 with 275x40x18 rubber

Fronts: 8x18 ET57 with 245x40x18 rubber

Will these be direct bolt on or will spacers be needed?

What width spacers?

Will the rear have any interference inside or outside?

Thanks

[Loren]

:welcome: 

 

The correct offset for a 986 Boxster with those wheel sizes is:

9 x 18 offset 52 mm

8 x 18 offset 50 mm

[Docdanracy]

Ok

So on another set of wheels

8x18et50

10x18et 65

would those fit without spacers or would I need 12-13mm spacers for the rear?

Thanks again

[Loren]

The correct offset for a 986 Boxster with those wheel sizes is:

8 x 18 offset 50 mm

10 x 18 offset 47 mm

[fridsten]

Ok

So on another set of wheels

8x18et50

10x18et 65

would those fit without spacers or would I need 12-13mm spacers for the rear?

Thanks again

You need a pair of 18 mm spacers for the rear wheels. (65-18=47)

Edited April 21, 2016 by fridsten

[Yon Visell]

(Apparently I enjoy replying to old threads…)

Concerning tire fitment, while I have not tested 18-40-245 (front) I am not sure it will clear the forward portion of the 986 fender well near full lock. It will be close, and depends on offset you choose. Adding spacers (effectively reducing offset) will make it harder to clear forward wall of fender well. I can tell you that 18-40-255 (slightly larger diameter and slightly wider than 18-40-245) will not fit (tested with slightly lower offset than OEM), while 18-255-35 will fit (for at least the two tires I tried), as will 17-40-245. Again referring to the front. When it’s close differences between tires can also be important. Check specs at tire website.

Concerning rear, had to edit my comment because I’ve never run a tire with that diameter, which is 1.6” larger than what I currently run (on Yokohama A052). It might fit if offset is appropriate, but I am not sure.


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