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Old 04-29-2010, 11:57 AM   #17 (permalink)
ShadeTreeMech
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Join Date: Apr 2009
Location: Arkansas
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The Van - '97 Mercury Villager gs
90 day: 19.8 mpg (US)

Lyle the Kindly Viking - '99 Volvo V70
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Bad thing about bigger tires is having to mentally recalculate your speed/miles on a tank due to the speedo expected stock tire size. I think on newer vehicles you can have the ECU reprogrammed to adjust for the tire size, but on an older manual speedo, you're kinda stuck with what you got. Mind you, it's not that difficult to add x% all the time but it can be misleading if you forget and start to speed by going with the readout on the speedo.
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Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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