How i get 52mpg avg (constantly)

[roxy1]

i averaged 51.2 for a whole tank during my weekly commute when I had my tires as 42 psi. that's just with a stock 5 speed. it wasn't worth it to me. im much more comfortable at 34 psi and still get 45 mpg's on the same commute.

[nookandcrannycar]

Originally Posted by roxy1

it wasn't worth it to me.

I agree.....not worth it .

[Yaristeve]

Originally Posted by nookandcrannycar

I agree.....not worth it .

Ditto.

I keep my tires at 32PSI and no way in hell could I stay sane driving at 62MPH; it's hard enough to stay under 70.

"Side drafting" a semi is not really a good idea; if you ever get a chance to see a semi lose a tire tread, you'll stop that practice ASAP.

[nookandcrannycar]

Originally Posted by Yaristeve

no way in hell could I stay sane driving at 62MPH; it's hard enough to stay under 70.

I do it, but I admit it would be much harder in LA. Some of the freeway mileage around here = a speed limit of 60. However, we also have the other and of the spectrum with much of I-45 between Huntsville and Dallas with a 75 limit and much of I-10 between San Antonio and El Paso at a limit of 80.

[BennyLava]

Originally Posted by IllusionX

Yes, there is a reason why there is always a max pressure on every tire that take into account rolling.

They did a test on a ford crown victoria with factory wheels and some junky goodyear tires. They couldn't get the tires to come off the rims at 100 PSI, no matter how hard they tried. They put those tires though all kinds of hell trying to get them to pop. After that I'm sure you're probably safe up to 100psi.

Also to the OP, the AC is indeed a power drain of sorts, just like a power steering pump, an alternator, or anything else you have on the belt drive. Now how much that AC is sucking down on a modern car like the yaris with a tiny compressor, who knows. My guess would be that you still lose at least half a mpg, just knowing how much electricity those wall units will drink. That energy requirement won't change just because its running off an internal combustion engine instead of an outlet.

[nookandcrannycar]

Originally Posted by BennyLava

They did a test on a ford crown victoria with factory wheels and some junky goodyear tires. They couldn't get the tires to come off the rims at 100 PSI, no matter how hard they tried. They put those tires though all kinds of hell trying to get them to pop. After that I'm sure you're probably safe up to 100psi.

Also to the OP, the AC is indeed a power drain of sorts, just like a power steering pump, an alternator, or anything else you have on the belt drive. Now how much that AC is sucking down on a modern car like the yaris with a tiny compressor, who knows. My guess would be that you still lose at least half a mpg, just knowing how much electricity those wall units will drink. That energy requirement won't change just because its running off an internal combustion engine instead of an outlet.

Last year a car dropped a part on the freeway at night and then came to a stop in the fast lane. I ran over the part in my blue Yaris...impossible to see. It bent my rim and gave me an immediate flat. I was at the recommended PSI. I think the situation would have been worse/more dangerous at a hyper inflated PSI.