10-4

Thanks for all the info gents!

 

I would also recommend using the specs on the sidewall. just for the record I have a 33 ft TH and I have towed it with 2 different setd of "D" rated tires and havent had any issues yet. Plus its a little more comfortable ride when I am not towing since i use my SD as a daily driver as well. Good luck man.

 

I just picked up some E rated mickey thompson ATZ's with a max psi of 65 and filled them up to 40. 65 just seemed like alot to me, but at 40 the bottom of the front tires is bulging so I'm going to take it up to 45 or 50. Play around with them until you find what you like best. As long as you don't go over the max you will be ok

 

My next set will be E- Rated, probably Dura Trac's or Fierce MT's. I just need to be able to work with these MTR's 'till they're ready.

From what I'm hearing, I'll probably leave them at 40psi for now (empty) but pump them up to 50psi when I hook up the hauler. I usually end up filling them up twice anyway as I air them down in the desert (10-15psi).

 

I am still totally loving the Dura-Tracs!
VERY affordable for the size, reasonably quiet for how aggressive they are, love not having to chain up in snow (severe service winter rating), and the most compliant and comfortable e rated carcass I've ever seen!

 

That's exactly what I'm looking for. I need an MT or aggressive tread for how much time we spend in the sand, dirt and mud, but the MTR's are mind numbing. When going 60 that's ALL you hear is the tires.

I've had BFG MT's on a Jeep, they were WAY too loud at highway speed.

 

Compared to an MTR or BFG MT, they are VERY quiet (so far)! I can barely hear them and only if the window is down.
We'll have to see after 20K miles.

 

Hey Barthel,
When I bump them up to 70 psi, I do notice a harsher ride than when they are at 55. Slightly and only in the rear. A little more bounce on the bumpier roads. However, ideally what you would do is monitor your tire wear, and go with the psi that gets you the most even wear across your tire. You could even take a wax pencil and draw a line across your tread in a few places, take a couple of laps around the block and see if it wears off evenly. That's the quick and dirty way. Best if you do that with a warm tire too.

I can understand your pain on the MTs. Heck, I drive NEXT to someone with MTs and all I can hear is the tire. I love these BFG AT tires I got with the truck. I'm very impressed. Great wet, dry and snow traction. Haven't had too awful much mud experience, but have had some and the grip great, and the tires are nice and quiet. Quieter the the Mickey Thompson Baja ATZs I put on one of the other tucks I had. I had some Bridgestone AT tires on a previous truck and they were just terrible. Poor wet traction and I'd get passed by mustangs in the snow, even with 4x4 on.

 

LOL, my granddaughter has a big thing of sidewalk chalk, I might have to take a piece from her and try it. I've done the chalk trick when I had my Jeep, guess the SD wouldn't be any different.

 

Those are are not recommended inflation numbers on the side of your tires. Look a little closer. They are MAX pressure the tire can take under MAX load. That's not the same thing at all.

 

The OP said he uses his truck to tow most of the time, so do I. I will not change the air psi every couple days. I've had no problems using the max psi for 80,000 miles on my last set using this psi.

 

In your case, the information on the door sticker is completely worthless because you are running a tire that is quite different than the OEM size and range. At first glance, my thought was that you were running dangerously low tire pressures especially for towing a toy hauler. However, you didn't say if it was a fifth wheel or bumper pull.

I looked up your tire and surprisingly it is rated at nearly 3200 lbs at max pressure (which you say is 50 psi). So that is quite strong actually, especially with such a low pressure. So, since you have the V10, your front axle weight is probably right around 4400 lbs or so(guessing?), so it sounds like your tires are capable of handling that weight at 40 psi. However, you should try and find a load chart for your tires to be sure...

Assuming a bumper pull trailer around 9000 lbs...the tongue weight should be less than a 1000 lbs so total rear axle weight could only be 4000 or so (depending on what else you have in the bed...). Again, the pressure you are running "could" be safe.

To be certain, air your tires to the max (50 psi) while towing and then run the lower pressure for the unloaded driving. If you want to be more specific, then get your truck weighed while loaded and unloaded, find the load chart by psi for your particular tire and inflate accordingly..

 

I always run the maximum pressure shown on the tire sidewall on any vehicle, car or truck. The story about wearing out the center of the tread is a holdover from the bias ply tire days when tires were just basically heavy-duty balloons.

I run 80 psi in all 4 of my factory-stock Continentals on my F250 and the tread wear is dead even across the tire even though I don't carry nearly the max rated load.

Go by the max psi on the tire, not the door sticker. That sticker has no magic ability to change when you change tires.

The ride may be a little smoother with a lower pressure, but if you wanted a smooth ride you should have bought something other than a Super Duty. Running the tire's max rated pressure will give you the best tire life.

It will also give you the best MPG. Super Dutys are already gas guzzlers and we accept this in exchange for the ability to tow or haul about anything, but there is no reason to make it worse.

 

The sticker on the B pillar is only if your running stock size tire. If your running anything other the what size tire the sticker says then use the tire manufactures specs

 

This was an awesome response Shane-N-Bake, thanks!

What I ended up with is 45psi in all 4 except when I tow, then I bump the rears up to 50psi. I'm gonna try it out this weekend, I'll let everyone know how it goes.

BTW, no sticker on the B pillar, so all my info was based on the tires themselves. AND, it's a bumper pull 10K rated toy hauler. I figure I load it to about 7 or 8K.