RE: [ST] 190 on rear

[Charles McCullough <cmccull@xxxxxxxxxxx>]

At 08:16 PM 12/17/02, you wrote:

>Nope, doesn't cut it.  The rim is the exact same rim that
>comes on the Daytona, and the Daytona is fitted with a 190.
>Seeing as the Daytona is a more "agile" bike it obviously
>puts greater demands on the adhesion offered by the tyres
>it's running on.  The ST doesn't come with a 190 because
>it is a "softer" bike.

Larger tire on the Daytona is because of bigger motor  - not "more agility" 
There is no perceptible/measureable differences in contact patch size 
between a 160, 170, 180 or 190 (assuming you are running at 
standard/recommended pressures (this from a Dunlop Tire rep

My tz250 has vastly more "agility" than the Daytona could dream of having. 
And it runs a 160 in the rear on a 5 1/2" rim. At ~88hp, it doesn't need 
anything bigger. My 748 is much quicker in corners (i.e. more agile) than 
my ST (but nowhere near the tz in cornering capability)- and it uses a 180 
stock. At ~100hp the ST just doesn't need anyting bigger than a 180 (and 
debatable that it needs bigger than a 170). The 190 is on that Daytona so 
it will hold together/last when you grab some big throttle.

Charlie McCullough
tz250 WERA#90
Duc 748
Triumph ST


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