S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Why would new tires make more horsepower on the dyno?

Thread Tools
 
Search this Thread
 
Old 10-15-2007, 03:58 PM
  #1  
AudiWorld Senior Member
Thread Starter
 
NYLawyer's Avatar
 
Join Date: Mar 2000
Posts: 937
Likes: 0
Received 14 Likes on 6 Posts
Default Why would new tires make more horsepower on the dyno?

<ul><li><a href="http://www.evo.co.uk/videos/supercarvideos/204674/ferrari_599_gtb.html">http://www.evo.co.uk/videos/supercarvideos/204674/ferrari_599_gtb.html</a</li></ul>
Old 10-15-2007, 04:02 PM
  #2  
AudiWorld Expert
 
TwentyValveB5+S4's Avatar
 
Join Date: Jan 2005
Posts: 34,704
Likes: 0
Received 0 Likes on 0 Posts
Default

different rolling diameter?
Old 10-15-2007, 04:10 PM
  #3  
Junior Member
 
LEH82's Avatar
 
Join Date: May 2006
Posts: 1,572
Likes: 0
Received 0 Likes on 0 Posts
Default

not sure but man your car looks very nice
Old 10-15-2007, 04:12 PM
  #4  
AudiWorld Senior Member
Thread Starter
 
NYLawyer's Avatar
 
Join Date: Mar 2000
Posts: 937
Likes: 0
Received 14 Likes on 6 Posts
Default

Thanks.
Old 10-15-2007, 04:25 PM
  #5  
AudiWorld Expert
 
iconoclast's Avatar
 
Join Date: May 2001
Location: In, Out & Around...
Posts: 30,100
Received 10 Likes on 9 Posts
Default which effect gearing ratio?

idk.
Old 10-15-2007, 04:35 PM
  #6  
AudiWorld Expert
 
TwentyValveB5+S4's Avatar
 
Join Date: Jan 2005
Posts: 34,704
Likes: 0
Received 0 Likes on 0 Posts
Default

right. changes final drive ratio.
Old 10-15-2007, 04:42 PM
  #7  
Audiworld Junior Member
 
JKurtzS4's Avatar
 
Join Date: May 2002
Posts: 77
Likes: 0
Received 0 Likes on 0 Posts
Default

what size wheels do you have?
Old 10-15-2007, 04:47 PM
  #8  
AudiWorld Senior Member
 
ErikS4's Avatar
 
Join Date: Aug 2004
Posts: 1,270
Likes: 0
Received 0 Likes on 0 Posts
Default That is the most rediculous claim ever! There were other factors involved in that - in fact,

there's no evidence the dyno graph displayed even belongs to the car in the video. That could very well be tire company propaganda. If they were to put together propaganda like that, they wouldn't list the company name (and turn it into direct marketing) because that would give them away. That explains the absence of an obvious brand or tire model in here. This video is designed to inspire credibility even though it's complete bull****.
Old 10-15-2007, 04:59 PM
  #9  
AudiWorld Senior Member
Thread Starter
 
NYLawyer's Avatar
 
Join Date: Mar 2000
Posts: 937
Likes: 0
Received 14 Likes on 6 Posts
Default

19in
Old 10-15-2007, 05:25 PM
  #10  
AudiWorld Super User
 
The R's Avatar
 
Join Date: Mar 2000
Posts: 9,705
Likes: 0
Received 0 Likes on 0 Posts
Default In the same brand/model, probably not....going from one brand to another, I could see it making

a slightly difference. For example since I run 19" wheels, I've noticed different tire weights between brands. Like the Falken FK452s in 235/35/19 weighed in around 26lbs where as Toyo Proxes4 were in the 22lbs range. Some tires are taller than others, etc....I can't see it making a huge difference, but there could be something. Eh....don't listening to me, I'm suffereing from hunger. LOL


Quick Reply: Why would new tires make more horsepower on the dyno?



All times are GMT -8. The time now is 02:27 AM.