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Old 06-12-2015, 04:24 PM   #11
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Do your tires state "ST" on them anywhere? If so they are limited to 65MPH.
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Old 06-12-2015, 04:54 PM   #12
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Do your tires state "ST" on them anywhere? If so they are limited to 65MPH.
I will have to check later as I took the trailer to storage today.

I understand the practicality of driving 65 mph, however, I have to wonder why the tire manufacturers (yeah, I know they're not US-based) haven't adjusted tire durability to account for the higher interstate speeds (i.e. Interstate 80 is 70 mph in several states).

Has there been any reason provided why trailer tires are not rated for higher mph than 65?
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Old 06-12-2015, 09:43 PM   #13
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Originally Posted by IAx213 View Post
I will have to check later as I took the trailer to storage today.

I understand the practicality of driving 65 mph, however, I have to wonder why the tire manufacturers (yeah, I know they're not US-based) haven't adjusted tire durability to account for the higher interstate speeds (i.e. Interstate 80 is 70 mph in several states).

Has there been any reason provided why trailer tires are not rated for higher mph than 65?
For a long time, states have had lower speed limits for any vehicle towing a trailer. It varies by state, but many have a 55mph limit.
https://drivinglaws.aaa.com/laws/trailer-speed-limits/
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Old 06-12-2015, 09:44 PM   #14
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75 is way too fast for towing anything. Slow down and save yourself some headache. ST tires are rated for 65 MPH max. Towing any faster can overheat them and cause failure. Mainly due to the weight that they are carrying. The only tires I've seen rated for 75 MPH are the new Goodyear "G" rated tires. They are 14 ply and run upwards of $300 per tire.
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Old 06-12-2015, 10:33 PM   #15
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A sway bar will really help reduce the pushing around of your TT when a 18 wheeler passes.
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Old 06-13-2015, 12:44 PM   #16
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Do your tires state "ST" on them anywhere? If so they are limited to 65MPH.
I just checked and they do state "ST".

Noted on the speed. Please, no more "that's way too fast!" posts. I got the message.
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Old 06-13-2015, 12:46 PM   #17
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A sway bar will really help reduce the pushing around of your TT when a 18 wheeler passes.
I do have a sway bar. I should be more specific. It was more like a vacuum effect than anything else. The sway bar prevented sway on the opposite side. I was more worried about the semi and the trailer hitting each other than sway issues.
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Old 06-13-2015, 04:24 PM   #18
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Re-read my reply #10 in this thread This will help control the vacuum forces and sway. Try it and I think you will find it works. And again keep to the right side of your lane to provide a bigger gap between you and the passing big rigs
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Old 06-13-2015, 09:03 PM   #19
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Re-read my reply #10 in this thread This will help control the vacuum forces and sway. Try it and I think you will find it works. And again keep to the right side of your lane to provide a bigger gap between you and the passing big rigs
Yeah, after the first couple of times I gave myself as much room as possible.

I suppose my comment was more an observation than anything. I now know what Nascar Sprint Cup drivers are talking about when they talk about "the car on the outside pulling the car on the inside around" with that vacuum effect.
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