Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

17 or 18 inch wheels for DE events

Recommended Posts

This was my first season doing DE's. I have a 2000 Boxster S with the 18" sport wheels, running with PS2's. It's my daily driver but I store it in winter. I've been thinking of getting another set of wheels and put Sport Cups on them for next season (I still want to drive it to the track). Is there value in running stock 17 inch wheels versus 18?

Thanks, Jim

Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

Assuming you keep the width the same? If the 17" wheels are narrower, then the answer is obvious: contact patch.

17" pro: Much cheaper tires and you'll be going through lots of those if you do track events regularly.

cons: Slightly slower reaction time since the car will be slightly more 'springy' with the same suspension. You may have a problem in the future if you ever want to upgrade your brake calipers.

Some people may propose weight factor, but I've done quick calculations between 17" and 18" forged wheels with either michelin PSC or yokohama AD07. I have the found the combined weights of both setups are nearly identical.

Link to post
Share on other sites

Many of the hot-shoe-fast-guys in Boxster class use 17X8.5 wheels with 245/40/17 track tires for low weight/max grip, widest choice of track tires, and the ability to rotate tires around for even wear. Good cost/benefit in a dedicated set of track tires. Maybe not a great novice setup as the tail will rotate more freely here.

Edited by Topless
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.