Re: Why does low pressure cost mileage?

no, just staying away from the retardation that is r.b.t. but i guess i'm no different now i'm clearly losing my faculties by forgetting to delete that group from my response.

anyway, glad you seem to be surviving.

cor,isit that time agaim?

You might like to use a synthetic gearbox oil and engine oil to correct that problem.

BTW I couldn't be arsed answering such an obviously erroneous statement and thought it'd be better left to some dick to make a pointless argument Youv'e saved the bother of embarresment of the innocent by jumping in wellies first wearing a blancmange hat.

jim beam wrote in news:jhsjgj$p8v$ snipped-for-privacy@speranza.aioe.org:

yea the select few that are not enginered correctly, but for most it is entirely correct, KB

there is a complex relationship between effective gear ratio [including tire diameter]. engine efficiency and wind resistance. tire diameter is a drop in the bucket and completely unrelated to the other two.

put another way, to presume a simple linear relationship between tire size and fuel consumption, as your statement does, is not only wrong, it's "not engineered correctly".

Depends on the speed and grade, not whether the car is "engineered correctly."

nate

The OP asks why lower tire pressure takes more energy, and now you're arguing about hills?

it's his "functional illiteracy".

I was responding to the comment about tire *size* or gearing. It's entirely possible to have a car that gets better mileage in OD on the flat and better mileage in 3rd or 4th climbing a hill. just as you may burn more calories in the wrong gear on a bike. Different gears exist for different purposes... otherwise you'd just leave it in the highest gear all the time.

The fact that OD (or the highest gear) isn't ideal for all situations is not a sign of poor engineering.

nate

Apparently you didn't read the post to which I was actually replying. DanO I'll cut some slack but when you clearly didn't read and understand the post and then accuse me of being functionally illiterate... well... hey, it's only you you're making look stupid.

nate