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  #16  
Old 09-10-2009, 06:46 PM
Jay FX4 Jay FX4 is offline
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Originally Posted by greyghost View Post
well when your living on $670.oo a month you go sparingly on the toys.
I feel your pain. Well actually, my pain might be a little worse since I'm off work from my back surgery.
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  #17  
Old 09-10-2009, 09:49 PM
greyghost greyghost is offline
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Originally Posted by Jay FX4 View Post
I feel your pain. Well actually, my pain might be a little worse since I'm off work from my back surgery.
i hope that back gets healed up soon for you. that's gotta drive you crazy not doing much.
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  #18  
Old 09-11-2009, 03:10 PM
greyghost greyghost is offline
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ok i have a progress report for you.
recap took off 225-75-15 and installed 235-75-15 filled up the tank and drove the 117 miles to see the girlfriend for the weekend. i managed to find one of those speed trap things on the way up today i was doing 45 by my speedo in the truck the sign read i was doing 48 so i'm not to worried about that little bit of difference now i seen that.{are those things cut in stone correct anyhow?} now for the gas millage . i filled the truck up when i got to her little town and my millage dropped from 29 on the last tank to 27.8 on this one so may be my driving habit i'll have to check it out on the way back home to see for sure..
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  #19  
Old 09-11-2009, 03:52 PM
STL STL is offline
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Originally Posted by Clem View Post
I am really pleased to see a thread that supports what i have said for years.
Larger tires are not always going to give better mileage!
This has been a real hot topic on other forums, with the majority saying you will get better mileage from taller tires.
When I were commuting the 30 miles to work, which is almost flat, non stop and go, I had 265/70/16's on my Ranger, that equated to 21-22 MPG. When I started driving in town all the time, my mileage dropped to 15-16 with those tires. A tire change to 245/16's gets 17-18 in town and 19.5 to 20.5 on the highway.
1-2 MPG isn't much until you figure the life of the vehicle. At today's prices I would expect that to be a couple grand.

Ray
You can also say the same for small tires. I had a buddy needing a set of tires real bad. The tires I had were 15" but they were a lot smaller than what was stock for his van. He kept saying something was wrong with the van it wasn't getting the same MPG it was before.
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  #20  
Old 09-12-2009, 01:44 AM
CALI-RANGER CALI-RANGER is offline
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i went from 28-29in. basic street wheels (which were near-bald when i got the truck) then got a set of slightly used (10% used) 30x9.5 R15 Yokhama Geolander AT's and upgraded from the alloys that were off an '05 explorer to black cragar 'soft d' steelies.. THEN those tires became bald (alotta stupid driving) and got same size tires (30x9.5) BFG ALTERRAINS and My gas mileage went down a a lil more than it did when i had the yoko's and threw off the speedo a lil more... but i dont care, the truck looks great! lol haha
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  #21  
Old 09-12-2009, 06:29 AM
Clem Clem is offline
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I agree with changing tire sizes. If you go considerably smaller, it is going to give less mpg, more RPM's to go the same speed, if you go up an equal amount, % wise it will affect your mileage in city driving, because it takes more power to get the larger tires rolling. On the highway where you are supposedly at a constant speed, larger should give better, in the Rockies or other mountainous terrain, probably just the opposite.
Width is another thing to consider, wider creates more friction, (drag on the engine). This will also affect mpg.
I know people who have purchased new vehicles and immediately gotten different tires, mostly wider, then wondered why their buddy was getting better mileage than they were with the same diameter tire, only the buddies tires were narrower. If you look at drag racing cars, the rear tires are wide for traction, the front tires are narrow to create less resistance, thus better ET's. (hopefully)
I like bigger, wider tires, they look better, so I run a tire that is close to the same width as stock and live with whatever mpg I end up with.
The bottom line being, measure how, where, and the all around conditions you will drive in, and buy tires accordingly.


Ray
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  #22  
Old 09-12-2009, 06:38 AM
greyghost greyghost is offline
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i got these tires to go with my 3" lift and wanted the same width tire i had but taller. {didn't feel i needed a "monster truck" since my truck very rarely sees more than a dirt road or a field along the side of the road for a fire call.
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  #23  
Old 09-12-2009, 08:42 AM
Jay FX4 Jay FX4 is offline
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Quote:
Originally Posted by Clem View Post
I agree with changing tire sizes. If you go considerably smaller, it is going to give less mpg, more RPM's to go the same speed, if you go up an equal amount, % wise it will affect your mileage in city driving, because it takes more power to get the larger tires rolling. On the highway where you are supposedly at a constant speed, larger should give better, in the Rockies or other mountainous terrain, probably just the opposite.
Width is another thing to consider, wider creates more friction, (drag on the engine). This will also affect mpg.
Right on! That pretty much sums it up.
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Our foreign policy is laughable at best. As is the recipient of this years Cracker-Jacks prize for 'peace.'
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NOS for teh horse powaz!!!
ɹǝʌo ǝɯ dılɟ
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  #24  
Old 09-12-2009, 09:45 PM
mr.ranger mr.ranger is offline
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as long as the size is conservative and obviuosly not too big or too small...then your mpg should be similar but it is also the traed of the tires that can affect mpg too
usually the more aggressive the tread, the lower the mpg...bun come on, everyone loves some beefy tires
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  #25  
Old 09-13-2009, 07:34 AM
DieHard4rd DieHard4rd is offline
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Width of tire affects friction. The wider, the more friction

usually a tire with a higher tread wear will have less traction which = less friction.

Going from Fords recimended tire pressure (32lbs on my truck) to the max safe tire pressure (44lbs on my tires) is said to improve your MPG by 1%-4%

So no matter what size tires you decide to go with, get the 65000 mile tire over the 40000 mile wear tire & run the max safe air pressure.
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  #26  
Old 09-13-2009, 08:19 AM
blueovelboy blueovelboy is offline
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there is a world of thought on tires and there affect on mileage over at bruce's tire here in San Jose ca there is a poster that shows how tire compound , tread pattern ,and air or nitrogen affect your mileage so lets start with compound a soft tire is safer for two reasons holds the road better and it has better traction like a lot of you race tires soft compound but they only last 30 to 40, thousand miles in normal use and eat up mileage

now the med compound rubbers are a all round types for your family car or mini vans this is where you get like 50 to60 thousand miles of a set and for ever day job good gas mileages usually a p metric size and tread patterns are somewhat narrow and less beef fey lets say

now the hard compound tires (witch seem to give the best mpg) are a 60 to 80 thousand mile rang tires but usually only come in mud and snow or a LT (light truck)
witch do get great mileage and can hold way more weight than a p metric but be cause of the hard compound thy tend to slide or skid more than med compound tires

now air as opposed to nitrogen air leeks out through the pours in the tire more easier it heats up faster thus making the tire look and ride like it has less then ample pressure witch eats up you mileage now nitrogen holds in the tire longer and dose not heat up as much and as quick so it dose keep rubber cooler (not much expansion from heat ) thus keeping tire closer to set pressure thus giving you or the car more mileage! and truer tire where pattern

and as patter or tread are concerned the ones that are or look like what comes on a civic or grannies car are going to be the best do to less drag /friction like snowball has said earlier in post#25 so choose wisely young grasshopper and enjoy to road and hope some how this helped you out
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  #27  
Old 09-13-2009, 08:30 AM
blueovelboy blueovelboy is offline
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ok dose any one ever look at the door sticker dose it not tell you what tires to use? i know i know jk like there would be no custom rimes or tries if we stuck to that
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  #28  
Old 09-13-2009, 08:56 AM
greyghost greyghost is offline
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Quote:
Originally Posted by blueovelboy View Post
ok dose any one ever look at the door sticker dose it not tell you what tires to use? i know i know jk like there would be no custom rimes or tries if we stuck to that
and if it didn't snow or rain to create mud we wouldn't need anything but a street tire either.lol
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  #29  
Old 09-13-2009, 02:37 PM
mr.ranger mr.ranger is offline
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Quote:
Originally Posted by blueovelboy View Post
there is a world of thought on tires and there affect on mileage over at bruce's tire here in San Jose ca there is a poster that shows how tire compound , tread pattern ,and air or nitrogen affect your mileage so lets start with compound a soft tire is safer for two reasons holds the road better and it has better traction like a lot of you race tires soft compound but they only last 30 to 40, thousand miles in normal use and eat up mileage

now the med compound rubbers are a all round types for your family car or mini vans this is where you get like 50 to60 thousand miles of a set and for ever day job good gas mileages usually a p metric size and tread patterns are somewhat narrow and less beef fey lets say

now the hard compound tires (witch seem to give the best mpg) are a 60 to 80 thousand mile rang tires but usually only come in mud and snow or a LT (light truck)
witch do get great mileage and can hold way more weight than a p metric but be cause of the hard compound thy tend to slide or skid more than med compound tires

now air as opposed to nitrogen air leeks out through the pours in the tire more easier it heats up faster thus making the tire look and ride like it has less then ample pressure witch eats up you mileage now nitrogen holds in the tire longer and dose not heat up as much and as quick so it dose keep rubber cooler (not much expansion from heat ) thus keeping tire closer to set pressure thus giving you or the car more mileage! and truer tire where pattern

and as patter or tread are concerned the ones that are or look like what comes on a civic or grannies car are going to be the best do to less drag /friction like snowball has said earlier in post#25 so choose wisely young grasshopper and enjoy to road and hope some how this helped you out

very informative there snowball
thanks for sharing
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  #30  
Old 09-13-2009, 02:51 PM
blueovelboy blueovelboy is offline
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wow he thought it was snowball and not me
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