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Old 04-30-2014, 01:18 PM   #1
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Tow vehicle tire replacement, how often do you replace?

Replacing tires this week on our expedition TV, tires are 3 1/2 years old with 40k miles on them.

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Old 04-30-2014, 02:56 PM   #2
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Just replaced my generals at 50k. They were down to the wear bars. Replaced them w/Michelin. The truck tows the TT about 95%of its miles. It is not a dd.

2016 RAM 3500 6.7L DRW
2018 Chaparral 360IBL, Andersen Ultimate II hitch
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Old 05-01-2014, 10:05 AM   #3
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If the tire is less than about 6 years old, it depends on tread depth across the tread.Use a tire tread gauge. If any tread segment is less than 3/32nds deep, it's time for new tires. If there is more than 1/32nd difference in the tread depth across the tire, then the tire has suffered either alignment or inflation problems. So fix the problem before you replace the tires. If the problem is the tread has worn more in the center of the tread, then that's caused by over-inflation. If the tread has worn more on both outside edges of the tread, that's caused by under-inflation. If one side of the tread has worn more than the other, that's caused by alignment (or maybe worn shocks).If under or over inflation is the problem, then find the load/inflation table for your type and size of tire (brand of tire doesn't matter) and go by that table. A good one is on the Toyo tire website.

When tires are about 5 years old, look at the sidewals carefully to be sure there are no weak spots or excessive checking. If the tire looks good and still has more than 3/32nds tread remaining, then run it until it's about 6 years old before retiring it for age.

You shouldn't need tires at 40k in 3.5 years. My F-150 OEM tires now have 36k miles in 28 months, and still have 7/32nds tread left, with no indications of alignment, inflation or shocks problems. So they're probably good for at least another 30k miles.
Grumpy ole man with over 50 years towing experience. Now my heaviest trailer is a 7,000-pound enclosed cargo trailer, RV is a 5,600 pound Skyline Nomad Joey 196S, and my tow vehicle is a 2012 F-150 3.5L EcoBoost SuperCrew.
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Old 05-01-2014, 11:26 AM   #4
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My Ram was purchased new in Nov of 07 with Generals on the truck. I rotated them every 5,000 miles because it is a 4X4 to even out the wear on them. Replace the Generals at 41,000 miles on them at the start of the camping season April 2011, with Michelin M/S2 tires. The General tire wear was all most down to the 2/32 limit. The Michelins are rotated every 6,000 miles and have shown very little wear at 72,000 miles, April 2014. These should last for the rated 60,000 miles life that Michelin warranties the tires for. This should be reached around 2017 on my truck. I am retired now and the truck is not driven as much as when I worked, but the truck will still see about 10,000 miles a year now.

I think that Michelins tires present the lowest cost per mile and provide the best tire life on the market now.

Jim W.
Jim & Jill
Sold: 2010 318SAB Cougar:New: 2016 Cedar Creek 34RL. 2008 Dodge 6.7LCummins the original 6.7L engine, w/68RFE Auto
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Old 05-01-2014, 11:39 AM   #5
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If your tires require pressure over 50 psi, have metal valves installed instead of rubber.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
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Old 05-01-2014, 11:49 AM   #6
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I have 10 years on my XPS tires-getting replaced this year.No cracks or uneven wear.Don't recall how many miles.Great tires,I have run the same tire on two different trucks and had the same result.I know-shouldn't run them that long-but they last!!
2011 Montana-3400RL
Towed by[B]'99 F-350 SD PSD DRW Lariat
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Old 05-01-2014, 08:00 PM   #7
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When they need to be replaced. If you are not sure when to replace your tires go to a tire shop and have them check the tread depth and condition of the tires.
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Old 05-01-2014, 08:15 PM   #8
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My last SUV I replaced the Dunlops at about 38k miles (6-1/2 years old). My concern now is the new TV I have (14' Tundra) has the lower profile 20' tires. It was the only tire that came on the Limited model. Took it's first trip towing the RV last weekend. Got a disappointing 9.8 mpg.

It did ride better than the softer suspension that was in my 4Runner. Not as much bouncing.

Jim, Diane & Robert ~ NE. OH.
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