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Old 03-13-2016, 07:20 PM   #11
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Originally Posted by jlgail4309 View Post
I think my Kumho 857 are rated for 75. I have towed at 75 mph . But the Jeep gets around 10.5 at 75 . Slow down to 63 or so and mpg's are 12.5 to 14 depending on wind and hills. I'm not really in a big hurry any more. We save more time if we don't go inside anywhere. Get diesel and us the trailer .

The 857s are rated to 99 mph

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Old 03-13-2016, 07:55 PM   #12
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I had the 857's on my Hw pop up. Would have been interesting to pull that thing @ 99 mph. Of course, we have all seen someone at 80+ and just waited to see some carnage.

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Old 03-13-2016, 10:48 PM   #13
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I don't think I'll be doing anything over 70 but, it's good to know I have a decent set of tires. Click image for larger version

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Thanks for the compliment on our choice of new windjammer.

Be safe out there....
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Old 03-13-2016, 11:21 PM   #14
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Originally Posted by rockfordroo View Post
Just 'cause I can doesn't mean I do. I do 60-62mph.

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Old 03-14-2016, 02:57 AM   #15
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Originally Posted by Airdale View Post
The OPs tires pictured in his post are clearly marked with a speed letter "L" for 75 MPH. (113L)

The TRA has increased the recommended speed restriction on ST tires to 81 MPH. All new ST tires from "off shore" manufacturers will now have speed letters. Some have even lettered them for 87 MPH.
As Airdale has pointed out, there has been a lot of recent changes in the ST tire process, and the 65 mph blanket statement is really no longer valid. There are just so many ST tires now that will not be covered by that speed factor.
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Old 03-14-2016, 05:59 AM   #16
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I installed the E rated Cooper trailer tires on the same trailer and noticed a huge improvement in handling/sway and they are also speed rated a little higher as well. Just a better margin of comfort.
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Old 03-14-2016, 06:56 AM   #17
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BDavis, what Coopr tires are you using and where did you buy them?
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Old 03-14-2016, 12:27 PM   #18
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My 2014 3006wk came with C tires and I will be upgrading to D. If the newer units come with D already then there should be no need to upgrade

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Old 03-17-2016, 07:21 PM   #19
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S is the speed ratiing and t is for Truck or load rated tire

Originally Posted by SeaDog View Post
couple of things besides weight to consider when thinking about the rating of your tires. I have "C" now and will be changing to "E". The speed you drive, ST tires have a 65 mph limit (I don't exceed this). Where you camp, I need the E rated tires (for the ply rating) because of backroad Idaho camping. It is very easy to put a rock thru the tread or sidewall.
Not sure where you got your information Seadog but there isn't a tire that is meant for the highway that is rated for less that 75mph. S rated is 112mph. You may not want to tow anything faster than you can do so and handle/react in a safe manner but it is not the tires that are holding you back unless you are exceeding the weight index rating they were made for.

L 75 mph 120 km/h Off-Road & Light Truck Tires
M 81 mph 130 km/h Temporary Spare Tires
N 87 mph 140km/h
P 93 mph 150 km/h
Q 99 mph 160 km/h Studless & Studdable Winter Tires
R 106 mph 170 km/h H.D. Light Truck Tires
S 112 mph 180 km/h Family Sedans & Vans
T 118 mph 190 km/h Family Sedans & Vans
U 124 mph 200 km/h
H 130 mph 210 km/h Sport Sedans & Coupes
V 149 mph 240 km/h Sport Sedans, Coupes & Sports Cars
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Old 03-17-2016, 07:32 PM   #20
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JMO, but anyone towing 70+ is a disaster waiting to happen. Don't care if you are towing a rv 5er with a Peterbilt, it's going to be gruesome if the trailer has a flat.

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