Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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)

Different brand winter tire front and rear

Recommended Posts


'98 Boxster 5 speed with factory 17" wheels.

Long story made real short: Today I mounted General Altimax Arctic 225/45 on the rears; upfront are (excellent with one season's use) 205/55 Dunlop Winter Sports so each axle has the same tire, but they are different front to rear. On the highway driving home (dry but cold conditions) the car felt "squirrely" almost like it was swaying with each movement of the steering wheel. It felt better on surface streets, but nothing like summer tires. The car didn't feel as stable.

This is my first time driving on winter tires so I do not know what to expect, but it does not feel right.

The rears are narrower than the stock summer tires, would that have anything to do with it or could it be the different brands front to rear?

Any advice greatly appreciated!


Edited by spg356
Link to comment
Share on other sites

Don't know for sure but winter tires may have a harder tread compound making them more susceptible to any road irregularities like hard soled shoes, they won't catch you with a misstep. The solution might be to have your alignment checked. your normal soft street tires might be hiding some imperfections in your alignment. among other things, poor alignment can' make for a twitchy car.

Regards, PK

Link to comment
Share on other sites

Always put the same make/model snow tire on all four corners.


"Install SP Winter Sport tires in sets of four only."http://www.tirerack....SP+Winter+Sport

Both sources have an incentive to sell you more tires.

Tirerack's article discusses mounting all-season on one axle and winter tires on the other, not two brands of winter tires.

The differences between summer and all-season and between all-season and winter tires are significant on snow and ice. Are there any sources that cite independent tests to show that the difference in winter tires is that different?

How old are the tires (sidewall date)? Temperature?

Link to comment
Share on other sites


Thanks for the replies,

Alignment was good when tires were switched, but I will have that rechecked.


All 4 tires are less than 2 years old, temps have been around freezing. Also, pressure is 29 front 36 rear.

Any other thoughts appreciated!!!


Link to comment
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.