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Old 03-13-2016, 10:12 AM   #1
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Tires

I was walking around my new Windjammer 3006wk and was looking at the tires. Click image for larger version

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Some have said to go with E rated tires. These are D rated at max load of 2540lbs. X4 that's over 10,000lbs of rated capacity. I think I'll stay with these for now. I will consider going to the E rated for my next set in the future. My old camper was a Flagstaff 831bunkhouse and that had C rated at 1820lbs Max. That camper was 6500lbs dry and I know now those tires were way over their limit. Keep in mind of your camper weight and added weight of gear (gas, battery, water, etc.) and what your tires are rated for. Happy Camping 🙂
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Old 03-13-2016, 10:23 AM   #2
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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.
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Old 03-13-2016, 10:31 AM   #3
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Your Flagstaff may not have been over. Your tongue weight is carried by the TV so you would subtract TW from actual gross weight of RV. It might have been right at the border as it was with mine. I jumped up to a D rated tire from C rated. Not so much for the increase in capacity, which by the way, you are still limited by axle weight, but more for handling. Stiffer side walls helped a lot with pitch and roll. I seemed to do some bobbing and weaving on the old tires. Not to confused with sway, just a lot of rocking back and forth. My RV tows better have higher rated tires on it.
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Old 03-13-2016, 11:39 AM   #4
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I don't run with the crowd that immediately buys new tires before they get their new rig home, but I strongly recommend thorough tire examination every time you are ready to hit the road, looking for proper psi, tread separation, bubbles and abnormal tread wear. Also buy a cheap infrared thermometer and check each tire at every stop for large temperature variations. If you get a couple of years out of the existing tires then might be a good time to do the upgrade.
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Old 03-13-2016, 12:38 PM   #5
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Quote:
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.
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.
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Old 03-13-2016, 01:40 PM   #6
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My C rated tires are also Speed Rated L - 75mph:
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Old 03-13-2016, 06:07 PM   #7
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Thanks for the tips guys. I didn't realize the speed rating of L' on the tire. How many of you are towing at 75mph. I've always tried to stay around 65mph.
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Old 03-13-2016, 06:34 PM   #8
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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 .
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Old 03-13-2016, 07:42 PM   #9
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Pyromedic, I checked 2015 windjammer specs on FR add and they list it at about 7500 uvw plus 1500 cargo in round numbers. It looks like tongue weight is included in uvw in literature so tire capacity would not appear to be limiting factor. Nice looking unit.
The larger tank capacitys are great but limit ccc. I rarely would travel with grey and black tanks full except to dump station and like the extra grey tank size
I have D tires and the wheels appear to be ok for E so when I replace them I will also look to E and see if height is not a factor I'll use E then. I don't know if tire dealer will agree to replace original size but I'll cross that bridge then.
Mostly rural with 55 limits here.
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Old 03-13-2016, 07:53 PM   #10
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Thanks for the tips guys. I didn't realize the speed rating of L' on the tire. How many of you are towing at 75mph. I've always tried to stay around 65mph.
Just 'cause I can doesn't mean I do. I do 60-62mph.
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