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Old 01-07-2015, 02:29 AM   #31
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I've replace my good year marathon tires with the Goodyear G614 tires. I believe that the Marathon were over rated. I agree with the previous post about speed. I respect what he said about towing. But despite the truck design these trucks can drive 70 to 80 mph with nothing slowing it down. With 400 or more hp,and 800 ft lbs of torque. The new truck have no real issue of towing. But where the weakest link is..... the trailer tires and the brake systems. Even upgrade to the tire to a J load range. The maximum speed rated by Goodyear is 75 mph. Also after taking in effect of load and distance. We all know about heat... even with maximum inflation at 110 psi. When stopped after 20 miles, feeling the tire. There is no question that you can feel the heat of the tire coming out of tire. This is what friction causes.. The enemy is friction. When you travel past the maximum speed rate of the tire. Heat,load and pressure causes failure. Period.... And with brakes when you apply them to stop at highway speeds. We also generated a huge amount of friction and a huge amount of heat. With braking system heat is again our enemy. We then have brake fade, which the brake lining became In efficient to provide a friction to the ability to stop the load. Cause brake rotors to blue and warp. The rotors can't release the heat fast enough, same time the drums and shoes get over heated. Then stopping distance goes from normal to at least double. If you can get it to stop. That's why in the mountains they have run away ramps. When you overheating the brakes. You use these to stop. Just use common sense when you tow.

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Old 01-07-2015, 04:43 AM   #32
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Just my 2 cents no one should be towing a travel trailer or any camper at more than 65 mph regardless of tires. It just an accident waiting to happen and it will. The braking systems are just not good enough to stop quickly enough in an emergency situation let alone any other factors. I have been towing trailers for almost 40 years & have seen alot...... Over confidence is major factor in accidents. & the old saying you got to watch out for the other guy. I cringe when a 40 foot fifth wheel blows by me ........& have seen them spread all over the highway when we catch up.......



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Old 01-07-2015, 07:45 AM   #33
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Well hell, IMHO 65 is reckless, just because the ST tires are rated to 65 why does that make it THE safe speed?
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Old 01-07-2015, 09:12 AM   #34
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Originally Posted by silverback 35ts View Post
...And you are correct "the drivetrain is capable of speeds of 75 mph" BUT NOT for any extended travel time! No passenger cars/light duty trucks are built to sustain long speeds over 65 and that does not include towing 10,000 lbs. or more.
No disrespect, but this statement is ridiculous, even by Internet standards.
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Old 01-08-2015, 07:15 PM   #35
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Do we need hot shots to be able to maintain the posted speed limit with a trailer? 😀
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Old 03-23-2015, 02:50 PM   #36
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I also have a 2013 Silverback 29 re with the same tires I have done 2 2000 mile trips no problems but I want to change to Michelins ribs also have you done anything or got any good answers on tire spacing??
Dexter axle recommends 1 inch min.
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Old 03-23-2015, 05:44 PM   #37
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You know, if you left earlier you wouldn't have to SPEED to get there. That's why Apple is in business, along with Verizon.
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Old 03-25-2015, 02:15 PM   #38
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I would be hesitent to go less than 2" between tires on dual axles. I had the same decision going from a C rated 205/75/14 to a D rated Kumho 205r14. Unfortunately, the Kumho was 1" more in diameter which would have decreased the space between tires at rest to 1". I think too much risk when they are bouncing around for coming in contact.
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Old 03-25-2015, 04:01 PM   #39
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There is always a debate over ST or LT tires and brands. As always, do some research before making this important safety decision. The web site below is a good place to read before buying.

Trailer Towing – ST Tires vs. LT Tires | RV 101® your education source for RV information
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Old 03-26-2015, 06:00 PM   #40
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We just put a set of the Sailun S637 s on my work partner's trailer on Tuesday. These tires have a "G" load range at 3750 per tire. They are nearly identical to the GY G614s I have on my camper. However, at NTB, they were only $150.50 each. Great tire at a great price.

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