Go Back  AudiForums.com > Audi Models > Audi A8
Recommended tire pressure for 20" S8 wheels/tires? >

Recommended tire pressure for 20" S8 wheels/tires?

Audi A8 This full sized Audi A8 sedan offers interior luxury and spaciousness comparable to any car in the full sized luxury sedan class

Recommended tire pressure for 20" S8 wheels/tires?

  #1  
Old 08-06-2010, 09:21 AM
1st Gear
Thread Starter
Join Date: Feb 2010
Location: Pittsburgh, PA
Posts: 47
Default Recommended tire pressure for 20" S8 wheels/tires?

I put some S8 wheels on my A8 but I don't know what pressure I should use because I don't have the S8 manual. Anyone know the correct pressure?
Thanks!
 
  #2  
Old 08-07-2010, 11:42 PM
auditech79's Avatar
Site Moderator
Join Date: Feb 2007
Location: Nor Cal
Posts: 9,004
Default

Doesn't matter really, whatever the door says is what you should use. Tire pressure is based on vehicle weight, not the tire. Most tires can handle 60+ psi, but no one is about to crank it up that high.
 
  #3  
Old 08-08-2010, 10:20 AM
2nd Gear
Join Date: Jun 2010
Posts: 624
Default

I have 2 sets of wheels for my A8...17 & 18"...the label on the inside of the gas lid (like on your 2000, I assume) says 30lbs for 17" and 32lbs for 18". My last Porsche had similar recommended differences.

I would NOT assume a rule of 2 extra pounds for each extra inch of rim though. Different aspect ratio and width combinations determine how a tire "spreads" on the road under the same weight...not the rim diameter.
In racing and serious exotics circles, they often decide perfect pressure with a pyrometer (tire thermometer)...uniform temperature across the whole tread section after a calm straight road drive, without hard acceleration. Hotter in the middle = too much pressure...Cooler in the middle = too little.

So, I would try to contact someone with an S8 model that offered the 20" option (same aspect ratio/width)...or a dealer. They might even have one on the lot.
 

Last edited by silverd2; 08-08-2010 at 01:32 PM.
  #4  
Old 08-08-2010, 03:36 PM
1st Gear
Thread Starter
Join Date: Feb 2010
Location: Pittsburgh, PA
Posts: 47
Default

My book says says this:
255/40 R19 AllSeason Front-36 Rear-38
255/40 R19 HighPerformance Front -33 Rear -35
275/35 R19 HighPerformance Front - 33 Rear - 36

I have 265/35ZR -20.

Guess I gotta call the dealer. I hope their in a good mood this time....
 
  #5  
Old 08-08-2010, 03:58 PM
2nd Gear
Join Date: Jun 2010
Posts: 624
Default

Yep, depending on your normal load too.
I've always gotten good even tire wear, goin with the Audi label's small load suggestion...front and rear the same. I rarely ever carry much more than 1 passenger and a set of golf clubs.
Don't know what they recommend for 20's and load size, though.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kpatz
Audi A4
13
10-06-2018 01:45 PM
jo2valdez
General Tech
1
07-24-2010 08:15 AM
hunterln
B6 Models
6
11-03-2009 03:05 AM
Flarika
Audi A4
4
05-28-2007 06:31 PM
mischiru
Audi A6
11
07-29-2006 10:05 AM


Thread Tools
Search this Thread
Quick Reply: Recommended tire pressure for 20" S8 wheels/tires?


Advertising
Featured Sponsors

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.