Wheels offset

[porsche34]

Hello folks......,

As a new member of Renntech and a new Porsche Boxter owner i would like to say hello to all of you.

I just bought a 'new to me'' Porsche Boxter 1999 dark blue exterior and gray interior but with 16'' wheels...

Of corse i would like to upgrade for a newer 17'' wheels.

My question is....what is the offset of my 16 inches wheels front and rear and what should be the offset of the next 17 inches wheels if i want to keep the exact original look?

I really don't want to hear nothing about 18 inches whells or bigger.

Thanks in advance

Robert

[Delusionary]

I don't know the offset of the 16" wheels (they should be print/cast on the rim), but my 2001 17" wheels are 55 front, 48 rear.

[gandrade1]

Hello folks......,

As a new member of Renntech and a new Porsche Boxter owner i would like to say hello to all of you.

I just bought a 'new to me'' Porsche Boxter 1999 dark blue exterior and gray interior but with 16'' wheels...

Of corse i would like to upgrade for a newer 17'' wheels.

My question is....what is the offset of my 16 inches wheels front and rear and what should be the offset of the next 17 inches wheels if i want to keep the exact original look?

I really don't want to hear nothing about 18 inches whells or bigger.

Thanks in advance

Robert

:welcome:

There you go:

6J X 16 @ 50 mm (front)

7J X 16 @ 40 mm (rear)

7J X 17 @ 55 mm (front)

8.5J X 17 @ 50 or 48 mm (rear)

Best,

Gus

Edited May 6, 2008 by gandrade1

[porsche34]

Thanks Gus for the reply....,

Now i was wondering if i ever decide to buy 17 inches wheels.....would they fit right on with 55 offset front and 50 offset rear or i would need to buy wheel spacers.....

Thanks

Robert

[gandrade1]

Thanks Gus for the reply....,

Now i was wondering if i ever decide to buy 17 inches wheels.....would they fit right on with 55 offset front and 50 offset rear or i would need to buy wheel spacers.....

Thanks

Robert

Hi Robert,

Simply put, if you buy 17's with the same offset and bolt pattern (5x130), they will fit right in. If you buy a larger offset, let us say 55mm instead of the 50mm in the rear, you will most likely need 5mm spacers, if you buy a lower ofset let us say 40mm, you will already be 10mm further out, so no spacers can save you!

I found this nice website you can play with Offset Calculator

Best,

Gus

[Halfbreed83]

So would a 9.5x18 or 19 inch wheel work for the front offset?