Want 2-4 MPG NOW!!!!

[Gut Check]

Ok, so we love the PT, but the Gas Mileage sucks reclamation
plant swamp water (4cylinders and 20 MPG!!!!).

See that sticker in the driver door for tire pressure? I lowered
mine by 3 psi, and got 2-4 MPG BETTER (weather permitting).

Now, be safe here (some Chrysler sycophants will likely state
that they tested the "system" and determined that the psi listed
on the sticker is optimal), but if it doesn't affect ride dynamics,
why didn't the stupes at MB/C think of this sooner?

[stirfry]

Sounds good, but I wonder. Will tires wear out sooner? if so how much sooner? Does it calcalk out. I pay $2.76 a gal for regular, not cheap. But then again tires arn't cheap either about $70.00 each. Just curious?[:I]

[MichaelDay]

Normally you get slightly better fuel mileage by INCREASING the tire pressure rather than reducing it. If you want to run 3psi below recommended, have at it, but please check the pressures more often since tires will gradually leak air and drop the pressure even further. Also remember that the maximum load that a tire can carry decreases as the pressure decreases. The PT is a heavy car for it's size and has all of the aerodynamic properties of a cement block as far as wind resistance is concerned.

[quicksilverdon]

I suspect the increase in MPG is more to the engine loosening up than tire pressure.
Try this - find a street with little traffic and a slope. At top of slope, take foot off gas and coast. Let about 5 PSI out of your tires and repeat - you can feel the difference - you will slow down sooner. I noticed on my commute and know when to check tires.
Go 2-3 PSI above sticker for best mileage.
If you bought a PT for economy, you didn't do any research.

[PTRobert]

I agree with keeping tire pressure at recommended levels. My PT mileage lately has been really bad due to the stop & go traffic in Dallas, but when I drove last weekend to Oklahoma and back (just 125 miles round-trip) my mileage (with 3 days in stop & go traffic) went from 21/22 mpg to >25 mpg. Driving straight up HWY 75 averaging 65 - 70 mph where permitted. I think if I had driven that route all week, my mileage would have been in the 27 - 28 mpg range.

When living in California, my wife and I drove to Phoenix and back and averaged 29 mpg for the trip plus the stop & go around town when looking for a house.

Too bad the PT doesn't do better in stop & go...

[JPMS GT]

I'm 3 lbs. over and still get 17.5 mpg. Must be the lead foot! [8)]

[Hooligan]

quote:Originally posted by JPMS GT

I'm 3 lbs. over and still get 17.5 mpg. Must be the lead foot! [8)]

THAT WILL DO IT!!!!! It sure makes a difference on my stop & go milage. Trips I have gotten up to 28 MPG.

[2step]

So you lowered your tire pressure and got better MPG. I don't think so. Please explain your method of calculating your mileage. I'd like to understand the science behind it.

OH,.....welcome to the forum,..........I think.[8D]

[Gut Check]

Ok, put the pressure back to door jamb levels. Recalculated old and new data. Looks like I may have made an error in the numbers. Getting same mpg for both pressures. So forget it, the lower pressures have no effect after all.

The brakes are still crappy though.

The gas from that one Shell station is better MPG than others (maybe the pump calibration is off, but by how far?).

And some of us in here need to switch to decaf.

[Racer46]

How to get better gas mileage out of yur PT:

SLOW DOWN

It's no fun, but you will get better mileage.[8)]