Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 12-16-2005, 09:57 PM   #1
Registered User
Join Date: Nov 2005
Location: CA
Posts: 31
Question Will 18" wheels work on a 1997 Boxster?

Just thought I'd specifically ask to make sure 18" rims will work on a 1997 Boxster. Anyone know FOR SURE if they will? I've heard they'll be fine if I don't plan on racing with them but are fine for daily driving. Thanks.

hoser is offline   Reply With Quote
Old 12-16-2005, 10:03 PM   #2
Registered User
Join Date: Nov 2003
Location: Illinois
Posts: 3,033
Everything I have read points to no, but maybe it is possible with some modifications.
'03 3.2L GuardsRed/Blk/Blk---6Spd
Options: Litronics, 18" Carrera lights, Bose sound, Painted to match roll bars.
Adam is offline   Reply With Quote
Old 12-17-2005, 05:20 AM   #3
Registered User
Join Date: Aug 2005
Location: Central Florida
Posts: 182
They will work but with some caviots. From a size perspective you shouldn't have any problems. The issues surround the suspension. In '99 or '00 (not sure of the year) Porsche beefed up the suspension and started offering 18" wheels as an option. Many people have posted that the reason for the beefed up suspension was to handle the extra cornering forces the 18" wheel/tire combo can exert, that's rubbish. A good set of 17's can generate as much, if not more cornering force upon the suspension as the average 18" package. The real reason was weight, 18" wheels and tires simply weigh more than the same 17" combo. That extra weight is what causes stress on the suspension when combined with high corning forces.

If you go with a top quality lightweight 18" wheel you can run them on your older Boxster without concern. Just make sure you determine the weight of your existing 17" wheel/tire package and stay under that with the 18's and you should be fine.
mjw930 is offline   Reply With Quote
Old 12-17-2005, 10:24 AM   #4
Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,240
Excellence mag (Sept. 05) stated that in 98 the rear suspension was beefed up just a bit to allow for 18's.

Additional info can be found on the PCA Q and A area... there's a long article there saying not to do it because it can bend suspension parts if driven very, very hard, like pushing the car on a track. Near the end of the longish response, it says something to the effect of "if you don't plan on blowing over apexes and pushing the car to it's factory limits, 18's will be fine as long as they're not too heavy compared to the factor 17's on the car.

I'm planning on putting those Italian aftermarket 18 carrera lights on my 1997 because the aftermarket rims I have on now (ROH's) are guaranteed to be heavier, even though I have not weighed them and no damage has been done to my suspension.

I say proceed with caution.
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...
RandallNeighbour is offline   Reply With Quote
Old 12-17-2005, 10:49 AM   #5
Registered User
Join Date: Nov 2005
Location: CA
Posts: 31
Question Tirerack.com

I was looking over at tirerack and they sell 18" and even 19" rims for a 1997 Boxster. I have put in an email getting their opinions since they should be somewhat familiar with this issue (I hope they are, at least!).

hoser is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 03:37 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page