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  #1  
Old 04-12-2010, 08:52 PM
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hey guy i was wondering what would be best tire for mpg on my 97 F-250 with 3.55 gears? any help would be nice Thnx.
 
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  #2  
Old 04-12-2010, 09:02 PM
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Stock... Your already turning slow... At most a 33" or 285...
 
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Old 04-12-2010, 09:07 PM
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would the 265 be good
 
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Old 04-12-2010, 09:41 PM
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Would be fine.
 
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Old 04-12-2010, 10:01 PM
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would it be dumb to goto 4.10 gearing for mpg
 
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Old 04-12-2010, 11:08 PM
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that would be the opposite way you would want to go to gain mileage. 3.55s will get you the best mileage.
 
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Old 04-12-2010, 11:41 PM
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i got 3.55s with 265s, my best is 22.5 mpg, i did 21.3 with the a/c on, that was doin 65-70 mpg avg speed
 
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Old 04-13-2010, 11:10 AM
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Hey cbps;
I have written a thread how to find out best mpg.
Just have a look:

https://www.dieselbombers.com/genera...g-physics.html
 
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Old 04-13-2010, 11:05 PM
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where can i get the specs on my highest gear
 
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Old 04-14-2010, 12:10 AM
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do you have an auto or a stick?
 
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