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Old 05-08-2013, 10:42 AM   #11
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We usually do 12 hour days on the road and there is still no reason to risk a tire failure simply to get there 1/2 hour sooner. I run at 62mph as well.
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Old 05-08-2013, 11:15 AM   #12
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Serious question...is there real evidence that 2-3mph over the rating drastically increases chances of a blow out?

Do tire manufacturers include any kind of buffer factor on tire ratings?

I did read specs and know that a few more PSI gets me another 10mph out of them, so I'm hardly stretching the limits of the tire at 67 mph, just curious if anyone has any facts on this one (with an apologetic caveat that I have not tried to search this topic outside of this thread)

The above aside, I think next time I'll try to stay within the 60-62mph range to see if I can make a solid MPG gain.
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Old 05-08-2013, 11:30 AM   #13
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Serious question...is there real evidence that 2-3mph over the rating drastically increases chances of a blow out?

Do tire manufacturers include any kind of buffer factor on tire ratings?

I did read specs and know that a few more PSI gets me another 10mph out of them, so I'm hardly stretching the limits of the tire at 67 mph, just curious if anyone has any facts on this one (with an apologetic caveat that I have not tried to search this topic outside of this thread)

The above aside, I think next time I'll try to stay within the 60-62mph range to see if I can make a solid MPG gain.
Note, you can only increase the PSI *if* you don't exceed the maximum PSI of the tire. You have to weigh and use the load tables to determine what's appropriate and then increase from there.

And, I have no idea about increasing blowouts due to a few MPH over. I'm paranoid given the amount of weight we're carrying and that's good enough for me.

I can tell you - I have seen a difference in MPG running at cruise control set for 64/65 vs. 60/61. It was 1-2mpg, but still- It was something.
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Old 05-08-2013, 11:37 AM   #14
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Thanks ependydad. 1-2 MPG on longer hauls is nothing to dismiss, particularly when trying to stretch a dollar.

Last time I was on the scales, the trailer had over 1,000 lbs to spare, so I'm not stretching that limit at least. But as for the extra PSI theory, I'm going to go and reread the specs again, just to be sure I'm not mixing my facts up between the camper and my other trailer tires!
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Old 05-08-2013, 12:18 PM   #15
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I like to take my time as well. I tend to speed up more to stay out of the way of everyone else
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Old 05-08-2013, 12:50 PM   #16
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Does anyone else find it ironic that someone pulling their camper at 75 MPH is giving advice to others to slow down?
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Old 05-08-2013, 01:00 PM   #17
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Old 05-08-2013, 01:42 PM   #18
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It's been my experience that when people approach an RV they expect and/or assume one of two things about the driver... either old or inexperienced. I'll poke along at 65 and let them assume what they will, they want to pass they can pass. I'll arrive alive and that's all that matters.
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Old 05-08-2013, 01:49 PM   #19
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Does anyone else find it ironic that someone pulling their camper at 75 MPH is giving advice to others to slow down?
Seems quite prevalent on this as well as other threads.
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Old 05-08-2013, 01:51 PM   #20
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It's been my experience that when people approach an RV they expect and/or assume one of two things about the driver... either old or inexperienced. I'll poke along at 65 and let them assume what they will, they want to pass they can pass. I'll arrive alive and that's all that matters.
Amen, except I'll be going 55-60.
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