Quote:
Originally Posted by spocheld
I don't know what engine they put in your car, but I also drive a '06 Civic Si with almost 50,000 miles and have gotten over 30 MPG exactly three times. I get 29.5 MPG almost exactly every time on the freeway doing 70-75. I do have a SRI, but have actually seen my MPG increase by about one after the install. FYI they rate the freeway MPG now at 29, not the 31 they originally did back in 2006. But I am also a big believer in quality fuel, I saw an increase of about 30 miles per tank when I switched from Costco fuel to Shell.
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^ Tire pressure? His and yours?
Honestly it can make a big difference. When I first got the hybrid in 06 I was excited to make EPA estimates on 42 mpg in city. This was at the fresh off the lot 34 psi. After some reading I went up to sidewall 44 psi. Instant ticket to 48 mpg. Slowing down and adding a few more techniques, block heater, and grille blocks and now I'm just shy of 60 mpg and hoping to break it by summers end.
So little story moral is higher pressure is a good thing. As long as your not going over the limit. Granted you drive a sporty car where lower pressure might be desirable but if your talking about fuel economy then upping the tires is a must.