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maelje

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Kansas City

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Message Posted: Mar 17, 2011 2:06:49 PM

I drive a Mercury Montego Premier, 2006. With this car, I really notice that if tires are not inflated properly, my mileage suffers. But in general, I think people are way too lax in paying attention to this. I have seen my mileage drop as much as 5 to 6 mpg from having a low tire. Anyone else see anything that dramatic?
REPLIES (newest first)
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smugutu1234
Sophomore Author Tallahassee

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Message Posted: Apr 25, 2013 6:37:21 AM

Most people don't check their tire pressure even when they have a device telling them to do so.
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51stovi
Sophomore Author Nashville

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Message Posted: Apr 16, 2013 1:00:59 PM

I see a drop when the pressure goes down. Thanks for the forum post, it reminded me that I needed to check them again since we have been having large temp. swings.
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Fastwalker1TX
Rookie Author Texas

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Message Posted: Apr 16, 2013 10:30:43 AM

I check often. I over inflate slightly and see a good 3mpg increase at highway speeds. Car says run 28psi, I run 36psi. I always see cars with a really low tire. people do not check pressures often enough which costs $$$ in poor mpg and tire wear. Not to mention the safety factors.
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giwan
All-Star Author Michigan

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Message Posted: Apr 16, 2013 9:34:00 AM

Some wheel and tire combinations leak more than others. I seem to only see my do so during large temp changes.
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the1roadhog
Champion Author Atlanta

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Message Posted: Apr 16, 2013 6:54:37 AM

Ck my unit often
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GBMAX
Champion Author Phoenix

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Message Posted: Apr 15, 2013 9:17:40 PM

Yes
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carinthuist
Champion Author San Francisco

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Message Posted: Apr 15, 2013 7:50:15 PM

yes
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IAMCANADIAN73
Champion Author Ontario

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Message Posted: Apr 15, 2013 5:15:43 AM

Yep
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IAMCANADIAN73
Champion Author Ontario

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Message Posted: Apr 15, 2013 5:15:27 AM

Yes
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dekline
Sophomore Author Atlanta

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Message Posted: Apr 14, 2013 10:38:16 PM

Yes this is true. If you keep your tires inflated, you will get better mpg.
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priver
Veteran Author Alberta

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Message Posted: Apr 14, 2013 8:39:12 PM

Yes, amazing how many People drive with low tires? Then they're surprised when it blows out. All out blame a higher power, I know a guy who blew 3 out of 4tires off his sailboat trailer on a 3hr trip (1/2 way home) He gave me a dum look when i asked if he checked the pressure b4 he left?? duh!

[Edited by: priver at 4/14/2013 9:40:09 PM EST]
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BartandLisa
Champion Author Newfoundland

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Message Posted: Apr 14, 2013 10:25:31 AM

I check the air pressure regularly, even though mine do not lose any significant amount over time. Occasionally have to top up a pound or 2. I have not noticed a difference in fuel mileage since they are never left to go down enough to make a difference.
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EvergreenON
All-Star Author Ontario

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Message Posted: Apr 6, 2013 5:27:10 AM

Always nitrogen
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plans72
All-Star Author Ocala

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Message Posted: Apr 5, 2013 8:31:01 PM

nitrogen
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ldheinz
Champion Author Chicago

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Message Posted: Apr 4, 2013 10:26:05 AM

Actually, I was making a pun about tire "inflation", but tires DO cost more money now.
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giwan
All-Star Author Michigan

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Message Posted: Apr 4, 2013 9:56:29 AM

Tires cost more partly because of the OIL that is needed to make them.
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Titanic1985
Champion Author South Carolina

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Message Posted: Apr 4, 2013 9:12:58 AM

Good Morning,

I agree with you ldheinz when you say, "...tires cost a lot more than the used to...". Last year tires increased in price nearly 30%. I check mine twice a month, faithfully rotate them and maintain the vehicle manufacturer's inflation recommendation. In general, not always, this has lead to safe travel, long life and excellent handling. You are right, tires are expensive to replace, but they are much better in quality than the old bias ply tires.

Take care :-). MGY

[Edited by: Titanic1985 at 4/4/2013 10:14:29 AM EST]
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ldheinz
Champion Author Chicago

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Message Posted: Mar 31, 2013 9:31:49 AM

Yes, tires cost a lot more than they used to. ;-)
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rkpatt
Rookie Author Atlanta

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Message Posted: Mar 31, 2013 4:56:44 AM

I over inflate my car's tires by 10%- (40 psi for me) and check pressure monthly.
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aalix
Champion Author Orange County

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Message Posted: Mar 30, 2013 11:55:10 AM

I check my tire inflation regularly to avoid safety problems.
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palantir24
Veteran Author Vermont

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Message Posted: Mar 30, 2013 11:32:54 AM

I haven't trended mileage vs tire pressure... But I make sure my tires are at or slightly over inflated
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chipote
Champion Author Washington

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Message Posted: Mar 30, 2013 10:40:33 AM

I overinflate by 4 psi getting a 1 mpg improvement
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giwan
All-Star Author Michigan

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Message Posted: Mar 30, 2013 9:04:43 AM

Yes but it matters the type of tire as well.
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hyeglenn
Champion Author Fresno

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Message Posted: Mar 30, 2013 8:24:30 AM

Visual check.
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Mr1lung
All-Star Author Phoenix

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Message Posted: Mar 25, 2013 2:02:38 AM

Checked monthly
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lumpyr
Veteran Author Texas

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Message Posted: Mar 24, 2013 11:43:03 PM

40 psi checked regularly...particularly before a highway trip. I try to drive about 60 mph which is the biggest factor in obtaining good fuel economy. Last trip yielded 35 + mpg in an '02 Camry with standard transmission.
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fmttu
Sophomore Author Texas

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Message Posted: Mar 24, 2013 8:34:13 PM

My mpg display shows a 2-3 mpg difference by raising the pressure from 30 to 34 psi.
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chuckl95453
Veteran Author California

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Message Posted: Mar 24, 2013 12:24:37 PM

I try to check it often
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Jalyn2013
Rookie Author Kansas

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Message Posted: Mar 24, 2013 11:23:46 AM

Check the tires weekley
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ldheinz
Champion Author Chicago

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Message Posted: Mar 24, 2013 10:18:56 AM

Last Saturday I went to the tire shop to have my nitrogen topped off. It was down a little after 6 months, but not enough to matter.
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CaptainAnhyzer
All-Star Author Albany

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Message Posted: Mar 24, 2013 7:55:49 AM

with the weather warming up, it's time to check again.
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Mr1lung
All-Star Author Phoenix

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Message Posted: Mar 20, 2013 10:38:04 PM

chk monthly
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73amx
Champion Author Allentown

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Message Posted: Mar 20, 2013 1:40:46 PM

checked once a month, more if it's below 32 degrees, and keep pressure at 32 to 34 lbs.
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area_51
Sophomore Author Toronto

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Message Posted: Mar 10, 2013 6:26:26 PM

checked weekly
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streetirsx
Veteran Author North Dakota

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Message Posted: Mar 10, 2013 5:27:23 PM

checked about once a month or when temperature drops significantly.
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tdhlmn
Rookie Author Denver

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Message Posted: Mar 10, 2013 12:14:28 PM

Haven't noticed any difference, though I visually check my truck tires all the time. My wife's car tells her to tell me when it's low, even when a few pounds low.
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burt12013
Rookie Author San Diego

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Message Posted: Mar 10, 2013 7:20:03 AM

yes weekly
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hyeglenn
Champion Author Fresno

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Message Posted: Mar 10, 2013 7:05:38 AM

I do visual checks all the time.
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metalhat73
Veteran Author Wilmington

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Message Posted: Mar 7, 2013 9:30:40 AM

TPMS makes sure my tires are properly inflated. Couldn't tell you if my mileage suffers from under inflated tires.
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dontuknowOH
Champion Author Ohio

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Message Posted: Mar 7, 2013 8:39:02 AM

I often see other vehicles with one low inflated tire,how much # I don't know but one can tell by comparison to the rest. It's hard to tell another motorist when in traffic but I have done so,some are unaware and grateful and some don't think you have that right by the return looks and with a no thanks ? ?....LOOK! I wave and drive on.

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aalix
Champion Author Orange County

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Message Posted: Mar 7, 2013 2:34:22 AM

check monthly.
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area_51
Sophomore Author Toronto

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Message Posted: Mar 6, 2013 5:20:58 PM

check monthly, plus the car rolls along nicely with the correct tire presure.
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TULL
Champion Author Fresno

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Message Posted: Mar 6, 2013 2:40:50 PM

Yes, check them weekly
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giwan
All-Star Author Michigan

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Message Posted: Feb 25, 2013 11:47:41 AM

Not sure it is that drastic but there is a drop no question
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ldheinz
Champion Author Chicago

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Message Posted: Feb 25, 2013 10:06:03 AM

I used to make it part of filling up the tank with gas. While waiting for the gas pump, I'd check my tire pressure, oil level, etc. If I didn't get to everything, I'd do it next time.
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morepwr
All-Star Author Ventura

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Message Posted: Feb 25, 2013 9:36:52 AM

That is something that makes a difference but is hard to remember to check.
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Mr1lung
All-Star Author Phoenix

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Message Posted: Feb 21, 2013 11:22:29 AM

check monthly
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chipote
Champion Author Washington

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Message Posted: Feb 21, 2013 2:57:41 AM

I check weekly
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dgsteven
All-Star Author Los Angeles

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Message Posted: Feb 21, 2013 2:15:10 AM

check it before driving
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HotRod10
Champion Author Wyoming

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Message Posted: Feb 14, 2013 3:29:25 PM

"the way you load the car may make even the maximum tire pressure unsafe."

That's true; that's why you'll see a max load shown along with the max pressure.

"...overheated the tires from excessive weight even at normal pressure."

Actually, it was most likely the excessive flexing of the tire from the extra weight that caused it to overheat, just the same as running it with low pressure under normal load.
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