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Which Alloy wheels fit direct?

skendrick

skendrick

New member
Hi all,

Going to change my 16" design 90's for either 17" cup or turbo style wheels. I found there are a lot of Boxster alloys going for sale, do they fit as a direct replacement or do I need spacers?

Any help would be apriciated.

Thanks
 
Good question i am after upgrading my alloys to the said mentioned any help would be great!!

Thanks,

Ben
 
They will fit a post '87 car, but they will look a bit narrow at the front unless you fit a shim type spacer.

Ben, if your car is pre-'87 (I think it might be?) then they won't fit yours without a 30mm spacer each corner.
 
They sit too far under the arch, so from the side they look narrow. In real terms the track is too narrow in fact.
 
I forget - Tony or John or someone can probably tell you as I think they have both done it.

Basically you want the total of the Boxster wheel offset and the spacer to equal the offset of the D90. The offset will be the larger number cast into the rim by the valve stem on both types of wheel, the other being the width.
 
I have 996 carrera 2/ Boxster 17" wheels on my 2.7 and as suggested above, the fronts look like they need to stick out of the arch a little more. The rears are fine.
Can't decide what size spacer to fit. This place suggests 7mm, http://www.wheeldynamics.net/appguide.html

open to suggestions...

Cheers
Daz.
 
ORIGINAL: Fen

They will fit a post '87 car, but they will look a bit narrow at the front unless you fit a shim type spacer.

Ben, if your car is pre-'87 (I think it might be?) then they won't fit yours without a 30mm spacer each corner.
Click to expand...

Mines a 89 mate, so should fit shouldnt they without spacers right? though like one of the later posts maybe need some spacers for the front!
 
Sorry, must have you confused with another new owner. Yes, you'd be looking at the same spacers as the OP to make them look right.
 
If you don't feel the need to go to 17" then the 16" cup wheels from a 968 have the same offset as D90's and bolt straight on. I have these on my car you can see how they look on ISTR page 27 of Ricks upload of the pictures from the Bedford trackday on saturday.
 
Sorry Neil - 16" Cups were outlawed by the style police in 2003. [&:]

It's weird that I think 17" Cups1's are the wheel for a '44 but I detest 16" Cups. [:mad:]
 
I have to agree with Mik. I'll also add that in 18" I prefer the Cup 2, whereas in 17" it has to be the Cup 1 for me. I'm pretty sure 16" Cups are a con and really they are 13" rims - they look like it anyway.

It's only the Bogster wheels that need spacers anyway, and I sort of feel the same way about them as 16" Cups. Something from a 911 will have a better offset and there are genuine Cups around for sale - 2's easier to find than 1's though.
 
I think the offset for 944's is 52.3mm and the 7J Boxster twists seem to be 55mm, then by my reckoning you'd need a 2.7mm spacer i.e. a 3mm spacer.
 
Your calculation makes sense, Scott, but I thought it was 5mm or 7mm people used. Maybe that's just for extra aesthetic benefit?
 
Well I must admit my wheels do look a bit too far inboard and I don't think 3mm would improve things much. I would go for 5mm if I were to fit them, though I must admit the looks as they are have never really bothered me, it's only since i've seen this thread than i've taken notice. I certainly havn't noticed any detrimental handling effects.
 
I have the 7J 55 Boxster twists too and I've never thought they visually sit too far inboard. I suppose a few mm will make very little difference (though I think I have some 7mm shims somewhere from a hasty Husbourne Crawley purchase [8|] )
 
ORIGINAL: Fen

I have to agree with Mik. I'll also add that in 18" I prefer the Cup 2, whereas in 17" it has to be the Cup 1 for me. I'm pretty sure 16" Cups are a con and really they are 13" rims - they look like it anyway.

It's only the Bogster wheels that need spacers anyway, and I sort of feel the same way about them as 16" Cups. Something from a 911 will have a better offset and there are genuine Cups around for sale - 2's easier to find than 1's though.
Click to expand...
Well I quite like them, especially next to D90's which are plain aweful. True though that out of the bigger cup wheels the original cup 1 ones look best. Why do you say they are a con? They cost me no more then recon D90's and they give better cooling and ISTR where definitely lighter. For aftermarket wheels I really like the Azev's on a turbo/S2, if it wasn't for the fact that every bugger is copying the lambo wheel designs (like golf gti 18") I would have said one of those would look ideal on our cars. The biggest con is spending £2K on 18" and tyres that weigh a tonne and most likely make the car slower.
 
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