[General | Members | C900 | 9000 | NG900 & OG93 | 92X | 93 | 95 | NG95 | 97X | 99 | Sonett | Vintage Models | Performance | Detail | Clubs & SOC | Other Cars | Books Movies & Music | Chat | FAQs | Gifts | Photos | Classifieds | Polls | Raffle | Sponsors]

95 Bulletin Board
1999-2009
Search:

[Main 95 Bulletin Board | Post Followup | FAQ ] [ Prev by Date ] [ Next by Date ] Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
Re: OEM AERO TIRE BEEF - Why they wear out quick
Posted by 2Slow (more from 2Slow) on Wed, 3 Apr 2002 18:28:17
In Reply to: Re: OEM AERO TIRE BEEF - Why they wear out quick, JohnW, Wed, 3 Apr 2002 16:20:26
I love a good conspiracy theory...

I work for a large OEM. We most definately develope the shit out of the tires we put on our cars. Although a specific tire line is not necesarrily designed for a vehicle, a particular tire size will be developed for a vehicle. Many aspects of the tire performace will be tuned until the OEM's development engineer is happy.

All tires fitted on OEM vehicles carry a number molded into the sidewall. This number describes most of the tire properties we design around. If you want the same properties on your new tire as the ones the engineers developed for your vehicle you would have to match this number when you replace tires. (This is not always possible.)

A side note about wear ratings. The numbers are pretty useless in the real world. The wear rating is determined by rolling a tire over a drum of specified diameter and surface characteristics. The amount of "miles" the tire travels before it wears to a certain level is compared to a "standard tire" and a rating is assigned. The problem is that rolling over a standard surface is very far from the real mechanisms of tire wear. The tire wear number is really only useful for a given tire internal carcuss. Once you switch carcusses (carci?) the relitve wear numbers are meaningless.

I am not a tire engineer, but have two friends who are. If you have specific questions that I can not answer, I can ask them.

By the way from speaking to both of the above mentioned people there general feeling is that Michilens are some of the best tires out there. The biggest drawback is the cost.

One last point. The tires on your car have been developed to trade off many different things. Tire wear. Lateral performance. Longitudinal performance. Tread noise. NVH transmissability and many other characteristics over a very wide variety of climates. (hot cold rain etc) the end tire is usually a compromise of many competing variables.

My main points are:

1) Tires are developed for specific vehicles.
2) Tire wear ratings are not very meaningful numbers.

posted by 198.208.22...
Posts in this Thread:
Members can receive an alert when someone posts in this thread.
Post a Followup

Name:
E-Mail: (Confidential & Secure - Not revealed to other users!)
Send me email when someone posts in this thread: (available to Members)

Subject:

Posting rules are simple - No for sale/wanted ads or live auctions may be here - use the classifieds.
You may not cross-post your message to multiple BBs.
Personal attacks, insults, or flaming are not allowed.
Posting any of this will result in an immediate loss of posting privileges on this site.
Site Members do not see any warning (red) text.

Message:

Optional Link URL: (e.g. http://www.saabnet.com/)
To promote your own Saab site here, you must have a link back to The Saab Network.
Link Title:
Optional Image URL: (e.g. http://www.saabnet.com/img.jpg)


The content on this site may not be republished without permission. Copyright © 1988-2012 - The Saab Network - saabnet.com.
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Donations
Your address is: 50.16.17.90 - Using CCBot/2.0 - Logged.
Site Members do not see red text instructions, green links, and bottom of the page banners.
Click here to see all the Site Membership Benefits!