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Old 05-20-2012, 12:26 PM   #11
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Quote:
Originally Posted by Preston View Post
X2
I never exceed 60 mph when towing.
It's hard to keep the Duramax under 65 mph.
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Old 05-20-2012, 12:27 PM   #12
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Be careful, most trailer tires are rated for a maximum speed of 65 mph.
X2
I never exceed 60 mph when towing.
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Old 05-21-2012, 03:40 PM   #13
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No offense intended, but when one of your trailer tires blows at 70mph, it WILL slow that duramax down a lot, and cause you a lot of grief in the process. I second and third the rule of thumb to keep your speed max at 65, and 60 is better.
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Old 05-21-2012, 05:24 PM   #14
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This question comes up on one site or another frequently, and the bottom line consensus as I read it, and from personal experiance, it's wind resistance by far that determines mileage. I've towed 5 and 10k pounds with the same truck, one ten feet hight the other 11. Mileage on the lighter one was just about 1 mpg better. And I'd attribute most of that to it being a foot or more shorter.

Also, my cousin bought a Honda Ridgeline and pulled a small, lightweight TT thousands of miles, coast to coast and back. Ten mpg. Maybe engines are just supposed to give you ten mpg if you pull. Who knows? Just my thought.
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Old 05-21-2012, 06:26 PM   #15
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No offense intended, but when one of your trailer tires blows at 70mph, it WILL slow that duramax down a lot, and cause you a lot of grief in the process. I second and third the rule of thumb to keep your speed max at 65, and 60 is better.
I believe I had seen in an earlier post that he has replaced his trailer tires with higher speed rated ones.
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Old 05-21-2012, 06:52 PM   #16
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Be careful, most trailer tires are rated for a maximum speed of 65 mph.
Your right, but Goodyear is not going to rate a tire good to 65 knowing it will self destruct at 70. I towed my last trailer at 70. I never had a blow out. I got 8 years out of my goodyear marathons before I started to replace them. I had 2 replaced with a sidewall bulge that Goodyear prorated them. I then just replaced the other 2 just because. I tow my trailers at least 3,000 miles a year. I never leave the driveway without checking the pressures first, and I would always check them at every stop.

I tow my new eagle at 65 and your right the duramax grumbles about going that slow.:hihi:
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Old 05-21-2012, 07:47 PM   #17
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All ST trailer tires are rated for 65 mph max. LT's are rated higher.
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