Gas mileage

[low91240sx]

Okay so I usually set my tires to 35 psi well I was heading to Tennessee for the day to visit my dad and I decided to put them to 40 just to experiment. I usually see about 375-390 a tank and that's with my foot in the pedal going 80-100 mph on the highway here and there when I'm running late for work well I was very shocked that when I got down to Tennesse I was inbetween half a tank and 3/4 so I drove around town the day going out to eat and going to gun shops etc. so I hit the road later on coming back to cincinnati and I drove straight home I averaged 80 mph with cruise control on but I did hit the govenor at 111mph a couple of times when I ran into anyways I got 478 miles to the tank now I know traveling highway your going to see more because your not always stopping at red lights and such but I think the 40 psi had a lot to do with it. Is it just me or am I just ignorant when it comes to this kind of thing? anyone else experiment with this ?

I filled up and I am back to routine driving and I kept the tires at 40 psi (I checked to make sure they're still at 40) so I'll see here in a few days and see if it does help but an extra 100 miles to the tank is nice the only thing I don't like is that you feel the road more with the tire pressure set this high but hey I'll deal with it for the extra mileage

[dbigfoot111]

wowtoo good to be true...lol but im going to try this.

[low91240sx]

cool cool try it and post back I have the QR25 for the record but we'll see I just checked and i have 268 miles and I'm sitting on a half of a tank so I doubt I'll see in the high 400s but I think I'll definately see a difference in mileage

[dbigfoot111]

awesome man

[low91240sx]

okay so I just got back from the gas station 2.63 a gallon w00t lol anyways I ended up getting 425 out of it but I bet if I kept it outta the floor I would see alot more so I managed to get about 60 more miles out of the tank

[Darius]

The main killer of gas mileage is acceleration. If you drive your daily like a grandma from the stop light and keep the speed 70 or less. You will see a dramatic improvement in mileage. Also, plan your accelerations down hills so you can let off a little on the uphill and slow back down to cruising speed. Try it for a tank and see what happens. I went from 33 mpg to a best of 39 mpg in my civic.

And tire pressure makes a huge difference. I always try to keep mine at 35 psi. My tires are el cheapo's so they don't retain that high of a pressure for more than a week so I have to keep pumping them up.

Ethanol blended gas also takes a chunk out of mileage. I lose about 15% with 15% blend and the price difference is definitely not 15% so I run regular 87 octane gas.

[low91240sx]

yeah I'll have to try it and see what happens I use 87 octane as well it only cost me 43 dollars to fill up and that's including topping it off

[rondhol]

35 is ideal pressure even Nissan recommends 29 psi. 40 psi is to risky, your tire may explode (especially with China tires) and :-( . The tips are slow acceleration and cruise at 60-70 mph. I got more than 31 mpg from Tallahassee, FL to Chicago, IL round trips 1800 miles, with 32 psi, AC on, July 2009. In town, I only got 20-26 mpg with many short trips <3 miles.