Miata Mailing List: January 1994, Message #33
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   From: boyle@cactus.org (Craig Boyle)
Subject: Re: Tires
   Date: Wed, 5 Jan 1994 01:49:42 -0500

> 
[75k mile service stuff deleted]

> However, he did notice my Yokohama A509s, which I've had since around 
> 60000 miles, and pointed out that their rating is too high for the car:
> he said their weight capacity, as written on the side wall, is
> 1160 pounds, whereas Mazda recommends 580 pounds.  He said this would 

The stock Bridgerocks says 1047 pounds at 35 psi. The only sense I can see in
580 is that 580 x 4 is about the weight of a Miata.

I don't think I've ever seen a tire with a 580 (or close) pound rating.



> give a tendency to bounce on rough surfaces and that they've seen
> this before with over-specified tires recommended by the Miata Club.

You need to drive with some R1's on the street if you want to feel a hard
ride :-)

> 
> I don't race my car - just regular 80-mile per day commuting on 
> the Bay Area's pocked and pitted freeways.
> 

It surpises me that the struts are still ok after 75k miles of this
treatment.


Craig