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Old 02-18-2012, 07:30 AM   #1
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tv stock tires are they enough

my wife and i justt bought a 2012 312qbud it has a 855 lbs hitch weeight are my stock tires goood enough they are 4 ply tread and 2 pply side wall d i need to up grade first time poster thanks

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Old 02-18-2012, 07:35 AM   #2
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I think we need a little more info here. What kind of truck do you have (1/2 ton, 3/4 ton, gas or diesel, etc) and then the first thing to do is read the load range rating on your tire. If you look at the sidewall, it'll say something like:
285 75 R16 (which is the size,) load range C (or D or E.) The higher the load range, the heavier the tire's construction and the more weight it is safely able to carry. So give us some more info and we'll go from there!

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Old 02-18-2012, 07:40 AM   #3
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sorry it is a 05 ford expedition im at work now when i get home i will get more info
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Old 02-18-2012, 08:16 AM   #4
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Good idea to check what you have. They might be P-rated tires, which are common on SUVs, even larger ones like your's.

If so, and if its time to replace, consider LT tires. They usually offer more load carrying capacity than a P-rated tire (although that is not always true. There are some P tires that match LT-C load ratings).

I personally like LT - Cs for my setup. They offer a bunch of positives but in general are less squishy and provide a better towing experience without being too harsh when not towing. Load range Cs have a max load pressure of 50lbs.

Load range D and E are available, too, depending on your size tire. But you might not be able to fully utilize those because of limitations with many SUV wheels - The D and E max load pressure of 65 and 80lbs, respectively, could be higher than your rims are spec'd for.
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Old 02-18-2012, 09:02 AM   #5
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Definitely upgrade the tires, as it might just save your life.
855 lbs hitch weight? That seems like an awful lot to be putting on the bumper of an Expedition. What is your payload capacity?
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Old 02-18-2012, 09:51 AM   #6
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I ordered LT tires on my new F150 and I feel that there is definitely a ride penalty. Haven't towed with it yet so I hope that there is a noticeable benefit. I had P-metrics on my last F150 and honestly didn't feel that they were insufficient. It's important to look at the load rating on any tire you get. Not all P-metric tires of the same size are created equal. The P-metrics I had on the old F150 had darn near the same load capacity as the new LTs and they rode better. Jury is out for me . . .

Check out Nokian Vatiiva. Great tire; especially if you live in the Great White North.
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Old 02-18-2012, 09:51 AM   #7
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That trailer exceeds the capacities of that SUV, keep the tires, get a new truck.

The 312QBUD is 35'10" which is way too long for the wheelbase of an expedition (119/131) depending on EL or non-EL expedition, the listed dry weight + cargo capacity = GVWR is 9441 pounds.

You need a 3/4 or larger truck, even with a 3/4, you need to be specific on which engine, gear ratio and wheelbase you are looking at.

Be safe and upgrade.

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