ed
Newbie RV’er
Posts: 44 
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Post by ed on Jan 5, 2019 10:55:33 GMT -5
Learned yesterday while driving all day in Texas. My mpg got worse and worse through out the 500 miles and when we stopped in NM for the night I found my sportsman tires to be about 10 lbs low. Refilled tires to recommended PSI and mileage back to normal. Lesson Learned "Check Tire pressure every day while on the road". Thx Ed
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Post by Chuck on Jan 5, 2019 13:17:24 GMT -5
ed I check my tires every time I stop, old truck driver habit called kicking the tires  I check not only tires but the axle bearing by touching the spindle, if too hot to touch you have a bearing problem Ugh 
Safe travels
Chuck
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Post by nvguy on Jan 5, 2019 20:11:50 GMT -5
Yep, tire pressure is lots more critical than most people realize. Keep an eye on those tires, running them low on pressure can shorten life and lead to failures.
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Post by lynnmor on Jan 5, 2019 23:46:12 GMT -5
Learned yesterday while driving all day in Texas. My mpg got worse and worse through out the 500 miles and when we stopped in NM for the night I found my sportsman tires to be about 10 lbs low. Refilled tires to recommended PSI and mileage back to normal. Lesson Learned "Check Tire pressure every day while on the road". Thx Ed Did you zero the MPG display each time you checked? If you didn't, the reading was simply the average MPG since the last time it was zeroed and that might have included non-towing miles before the trip. That 10 lb didn't cause much fuel loss. Also, you don't check tire pressure "while on the road," you check it cold before setting out in the morning. |
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ed
Newbie RV’er
Posts: 44
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Post by ed on Jan 6, 2019 14:48:39 GMT -5
Thanks and did zero out each fill up. We also had some wind but do attribute it mainly to the low tire pressure. Good learning item for me. Thanks. Ed
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Post by lynnmor on Jan 6, 2019 17:12:58 GMT -5
Here is one article about tire pressure vs MPG. Google the subject for more information.
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cloud
Weekender RV’er
Posts: 54
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Post by cloud on Jan 6, 2019 19:44:55 GMT -5
You wouldn’t think but the elevation change from Dallas to Amarillo is approximately 4000 feet. Put a nice north wind in there and you will definitely notice it
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Post by laknox on Jan 14, 2019 10:11:37 GMT -5
Personally, I doubt a 10 psi drop would even be noticeable in real world conditions. Not saying that it =doesn't= affect mileage, but no so's you could easily see it. Now, if you were running at, or near, max load for the tires, yes, you might notice it. I'd say wind and/or grade would have had a lot more effect.
Lyle
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I check not only
