[Land-speed] Tires,Mileage,etc/non LSR ?

[BWANA343 at aol.com]

Being the car guy on my block, lately I've been getting involved in the  "how 
do I get better gas mileage" discussion at neighborhood gatherings. 
Besides the usual advice, we also kicked around the merit of going to a  
larger, as in taller, tire to effectively raise the final drive ratio for the  
longer legs.
I researched tire sizes and find that to get a perceptible mpg  difference,as 
in ten percent, the tire size and corresponding weight goes up  tremendously. 
Most of the taller tires are truck/SUV and E rated and heavy. 
I'm thinking the added sprung weight and cost of the tires might  neutralize 
any mpg added. Plus,the Speedpo/odo would read off, too. 
Yeah, I know, Duh ?
Bob W



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