1997 Boxster 18 inch Rim fitment Question.

[RandallNeighbour]

I've had 18's on my car and even tracked it with 18's on it and it has not been a problem. There's a couple of guys on this forum running 19's on 1997's as well with out problems.

The thought was that 18's may stress the sub frame on the 97's. The sub frame was altered in 98 to be sturdier from what I heard. Of course, JFP is probably right about it being MY 2000 instead of 98... he's "in the business" and I am just one guy with one experience to share.

FWIW, As long as the OP isn't tracking the car and driving up on rumble strips/track curbing at speed and stressing the car to the max, I can't see how it would be a problem.

[JFP in PA]

Originally Posted by RandallNeighbour

I've had 18's on my car and even tracked it with 18's on it and it has not been a problem. There's a couple of guys on this forum running 19's on 1997's as well with out problems.

The thought was that 18's may stress the sub frame on the 97's. The sub frame was altered in 98 to be sturdier from what I heard. Of course, JFP is probably right about it being MY 2000 instead of 98... he's "in the business" and I am just one guy with one experience to share.

FWIW, As long as the OP isn't tracking the car and driving up on rumble strips/track curbing at speed and stressing the car to the max, I can't see how it would be a problem.

Just went and checked, according to Porsche TSB #4407, dated March 4, 1997: " Eighteen inch wheels are not approved for use on Boxsters. Use of eighteen inch wheels on Boxsters under severe conditions may result in structural failures of the body and/or suspension".

As far as I can tell by the paperwork, it applied to 1997 and early production 1998 models, so my statement on up to 2000 was incorrect.