Miata Mailing List: December 1992, Message #44
sponsored by



     


   From: (none)
Subject: Re: Tires (plug for 509)
   Date: (none)

> 
>         Reply to:   RE>Tires (plug for 509)
> This is another plug for the A509 Yokos, I have used many tires (P7, A008, 
> RE-71, etc.. mostly on my old 911, which eats rear tires in less than 10k
> miles) and in my opinion, the 509 sticks well enough for the streets, they
> also have better wear rating than the stock SF-325 Bridgestone (140 vs 120).

Actually, you cannot compare the NHTSA ratings (treadwear, heat, traction) 
between two different brands.  The ratings can only be used to compare 
tires *within* a brand (i.e. a Michelin tire with a treadwear rating of 280
will last twice as long as a Michelin rated at 140).  Each manufacturer sets
up the tests in accordance to government rules, but they set their own 
baseline (i.e. the tire rated 100).  

Just another case of government-mandated, misleading information.  But hey,
they're just looking out for us......  ;-)

--
	   Ernie.Corley@ColumbiaSC.NCR.COM