[Spridgets] No real difference in tires

[Chris King]

Greater rolling resistance?  I thought a skinny tire, with a small
aspect ratio, would have less rolling resistance.
Why would this be an incorrect thought?
 
Agree with you on cornering and poor handling of 80 series tires.
 
All other things being equal, skinnier tires are better in snow as well,
as they tent to track straighter and not slip sideways as much. Just
look at the width of the tires on WRC cars in the snow stages.
 
-=Chris

Chris King
http://home.comcast.net/~kvcbk/ 

 <-----Original Message----->

 	  	 From: Guy Weller [guy.weller at tiscali.co.uk]
Sent: 1/10/2008 6:11:19 AM
To: spritenut at comcast.net;spridgets at autox.team.net
Subject: Re: [Spridgets] No real difference in tires 

Another angle on this is that the taller sidewall tyres - that is the 80
aspect ration tyres - will deform more on cornering and will also 
generally have a greater rolling resistance. This reduces acceleration, 
increases fuel consumption and gives poorer handling on twisty roads. 
Generally all bad points. They do, however give a slightly softer ride. 

Guy 
-----Original Message----- 
From: spridgets-bounces+guy.weller=tiscali.co.uk at autox.team.net 
[mailto:spridgets-bounces+guy.weller=tiscali.co.uk at autox.team.net]On
Behalf 
Of Frank Clarici 
Sent: 10 January 2008 03:16 
To: Spridgets 
Subject: [Spridgets] No real difference in tires 

Specification Sidewall Radius Diameter Circumference Revs/Mile 

155/80-13 4.9in 11.4in 22.8in 71.5in 886 
175/70-13 4.8in 11.3in 22.6in 71.1in 891 

This is from a chart/calculator a lister sent me to check tire sizes. 
Seems to me the 175/70s are a tad thinner and shorter than 155s. 
But I do have 175s on the 58 and they sure look wider than 155s. 
http://www.miata.net/cgi-bin/tirescgi 
-- 
Frank Clarici 
Toms River, NJ 
You are subscribed as guy.weller at tiscali.co.uk 

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