05-27-2006, 05:17 AM
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#1
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Registered User
Join Date: May 2006
Location: Ontario, Canada
Posts: 29
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Quote:
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Originally Posted by MNBoxster
Hi,
Yep, TriGem2k is correct! Porsche found that areas of the chassis would not absorb the stresses placed upon it with an 18" wheel, particularly where the suspension members mount to the Car. In addition, it was found that these wheels had a tendency to cause some of the suspension mounting bolts to loosen from the stress as well.
So for the '98 MY, Porsche modified the chassis to accept 18" wheels as an option.
There are some people who have put 18's on the '97 with no apparent ill effects, but Porsche does not, and will not, recommend their use on a '97. It would be pretty expensive to find out Porsche was right! An Insurance Company could go sideways if you ever had a claim and they found the car had an unauthorized modification, especially when the manufacturer expressly warns against it.
Were it me, as an alternative, I would think about lowering the Car to minimize the space between Wheel Well and the Tire to improve the aesthetic. Hope this helps...
Happy Motoring!... Jim'99
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Thanks for the info Jim! So aside from the safety issue, do you know if they would fit without sticking out past the sides of the car or looking out of place? Is there anyway the suspension could be modified to support this? Would they fit a 98+?
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05-27-2006, 08:54 PM
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#2
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Registered User
Join Date: May 2006
Location: Annapolis Maryland
Posts: 1,528
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For the benefit of all 986 forum members, I've been experimenting with this whole "you can't go bigger than a 17 inch wheel on a '97" thing. When I bought my '97, it had 18x8s in front and 18x10s in the rear. I've been driving it regularly, as had its previous owner I suppose, and thus far neither of us have perished in a fiery crash. Strangely drawn to the thought of cheating death, and for the good of the order, I've decided to step up to 19s to see how far we can push the envelope. Should you not hear from me in the future, it probably means that my rear suspension disassociated itself with the remainder of the vehicle and I have plunged over a cliff to a brilliant and spectacular demise. 
Stay tuned...
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05-27-2006, 11:55 PM
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#3
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Quote:
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Originally Posted by Grizzly
For the benefit of all 986 forum members, I've been experimenting with this whole "you can't go bigger than a 17 inch wheel on a '97" thing. When I bought my '97, it had 18x8s in front and 18x10s in the rear. I've been driving it regularly, as had its previous owner I suppose, and thus far neither of us have perished in a fiery crash. Strangely drawn to the thought of cheating death, and for the good of the order, I've decided to step up to 19s to see how far we can push the envelope. Should you not hear from me in the future, it probably means that my rear suspension disassociated itself with the remainder of the vehicle and I have plunged over a cliff to a brilliant and spectacular demise.
Stay tuned... |
Hi,
Great! We can all tell Porsche to stop wasting their time, maybe they can now better concentrate on the RMS issue...
Happy Motoring!... Jim'99
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05-28-2006, 12:36 AM
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#4
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Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
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Jim, that's a very good suggestion. The 18 inch rim debacle on 97's only affects a few of us... the RMS affects every single one of us!
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