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Old 05-13-2009, 12:24 AM   #11 (permalink)
Matt Herring
Master EcoModder
 
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Join Date: Jun 2008
Location: North Andover, MA
Posts: 857

Bone's 2010 Prius - '10 Toyota Prius Black
90 day: 56.78 mpg (US)
Thanks: 5
Thanked 23 Times in 19 Posts
Quote:
Originally Posted by NeilBlanchard View Post
Hi Matt,

I saw ~6% jump up in my mileage when I put them on -- they definitely helped. I am now going to sell my alloy wheels...
6%...whoa!

Let me try some math...

At 60 mpg that would give me 3.6 extra mpg. On a 10 gallon fill that would be an extra 36 miles per tank or roughly $1.25 saved each fill up (at current gas prices). To break even on $70 discs I would need to fill up 55 times (that's about 2.5 years of fillups for me to break even...probably 3 years knowing that 60 mpg is not realistic in the winter...hmmmm). They look cool...but 3 years is a long time to break even...no?

I wanted to pour my first couple months savings on gas (switching from 4runner to Prius) on a mod of equal value...tempting.

Maybe time for a poll?

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