Air pressure when not towing

I just traded my 2011 Titan for a 2013 F-250 XLT CC 4x4 6.2. I checked the pressure today and it was 70 rear and 60 front. I have the Conitrac 275/65/18 tires. What would you recomend for when I am not towing. Just trying to make the wife happy because this truck rides like a horse and buggy compared to the Titan I had with Bilstein 5100's and Terra Grapplers running 40psi non towing.

larry barnhart wrote:

Cummins12V98 wrote:
I probably have more pin weight than anyone posting so far, 4,500#. Weigh your rig loaded and unloaded. Use the tire inflation chart associated with your tires.

I run 80 in the front all the time is is a bit high on the chart but it averages out for the edge wear fron turning.

On the rear I run 55 loaded and solo 45.

My truck is a 3500 RAM Dually.

If you are running 80 in the rear with a dually your rear tires will be bald in the center in no time and I would hate to ride in your rig!

I an still wondering if you have the biggest load posted and run 55 lbs loaded you are not even up to a D tire load range??? Air pressure carries the load!! "what say you" and this is just a discussion for all of us. I see less heat on our G tires on the alpenlite at higher air pressure as it builds up towing on a hot day and same tire will be the coolest.

So it seems like your lower air pressure tires would be kinda hot?

chevman

They are the same temp as the front tires when towing. No heat gun just my hands, I always do a walk around and touch each tire when I stop for fuel or rest area.

Look at the tire pressure table associated with your tires, if I ran any higher psi I would be wearing the centers out.

My door says rear axle max load 9350 @ 65psi my rear weighs 8,460 I run 55psi

front max load 5,500 @ 70psi my front weighs 5,140

So based on what your saying I could run D tires on the rear. I agree but I have personally seen that the tires wear out extremely fast!

transamz9 wrote:

Cummins12V98 wrote:
I gave an example of what I have seen. The "So be very careful with your tires, not safe!" statement was more of a general statement of what can happen with using D in stead of E tires.

I could have worded it differently, Sorry.

I find it a little hard to believe that the tires on you friends truck wore out by 3000 miles also.

I guess I should have worded my post a little also. I guess I should have just said that I air down when not towing and air back up when I hook up.

No joke they were Wild Country or something similar in the D rating with the same load capacity as the stock E tires.

They said the ride was very bouncy and had a lot of side wall flex.

The trip down and back is 2,500 miles so with driving around while down there they may have had 5K.

Cummins12V98 wrote:
I probably have more pin weight than anyone posting so far, 4,500#. Weigh your rig loaded and unloaded. Use the tire inflation chart associated with your tires.

I run 80 in the front all the time is is a bit high on the chart but it averages out for the edge wear fron turning.

On the rear I run 55 loaded and solo 45.

My truck is a 3500 RAM Dually.

If you are running 80 in the rear with a dually your rear tires will be bald in the center in no time and I would hate to ride in your rig!

I an still wondering if you have the biggest load posted and run 55 lbs loaded you are not even up to a D tire load range??? Air pressure carries the load!! "what say you" and this is just a discussion for all of us. I see less heat on our G tires on the alpenlite at higher air pressure as it builds up towing on a hot day and same tire will be the coolest.

So it seems like your lower air pressure tires would be kinda hot?

chevman

Cummins12V98 wrote:
I gave an example of what I have seen. The "So be very careful with your tires, not safe!" statement was more of a general statement of what can happen with using D in stead of E tires.

I could have worded it differently, Sorry.

I find it a little hard to believe that the tires on you friends truck wore out by 3000 miles also.

I guess I should have worded my post a little also. I guess I should have just said that I air down when not towing and air back up when I hook up.

I gave an example of what I have seen. The "So be very careful with your tires, not safe!" statement was more of a general statement of what can happen with using D in stead of E tires.

I could have worded it differently, Sorry.

Cummins12V98 wrote:

transamz9 wrote:

Cummins12V98 wrote:

transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.

Why would you run "D" rated tires when "E" are standard?

The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)

So if I am correct you are running a bigger tire that has the same load carrying capacity as the E tire that is stock.

Les Schwab on the West Coast is famous for selling people D big tires and saying they have the same carrying capacity as stock. That is true but very deceiving! The D has a much weaker sidewall and is not nearly as stable of a tire.

Friends had a F350 4X4 short bed and bought a 40' toy hauler and Les Schwab sold them Big Wild Country tires and said it would be fine. I advised strongly against it, they thought I was wrong because I don't like Les Schwab for many reasons.

Well they drove to Cali and back to WA and came over to me to apologize for not listening to me. They went to LS and reamed them because the rear tires were nearly bald in 3,000 miles and was a very bouncy and a scary ride. LS bought them a new set of tires that they used when they were not towing and stuck the Michelin E tires back on when towing.

So be very careful with your tires, not safe!

Second off, how could you come on here and tell me I'm unsafe when you no nothing about my rig, weights, or anything. I don't buy my tires from Les Schwab and it don't matter where I buy them, I buy what I want not what they want to sell me. I am not running big mud cleat tires and the tires I am running we repeatedly get 60-70,000 miles out of. I will promise you this, The tires I am running have twice as much side wall stiffness as any Michelin E rated tire.Hell my lawnmower has stiffer sidewalls than a Michelin. There's a reason why the mascot for Michelin is a big Pillsbury doughboy. Because that how they build their tires, "soft".If you want a tire that gives you a great ride and get a little work out of them then buy a Michelin. I work my tires so I don't. Been there and done that on a 99 Ram that I had and won't make that mistake again , same with a gas truck.

I commented on the OP's post and get slammed for it so while I'm getting slammed you would probably like to know that I also have passenger tires on my 4500# boat that I pull behind my 40' fifth wheel @ 70-75 MPH.

So let's have it! I have big shoulders........

Hannibal wrote:

transamz9 wrote:

Cummins12V98 wrote:

transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.

Why would you run "D" rated tires when "E" are standard?

The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)

So you tow "18,000 lbs" with a 2500HD pickup truck with D rated tires at 65psi?:h

First off, I could tow 100,000 lbs with passenger tires and not have any effect on the tire if it's with-in it's carrying capacity so keep scratching your head.

F350 SB Dually. 55 psi front 50 psi rear all the time. 3400# pin weight with 14,400# 5th.

transamz9 wrote:

Cummins12V98 wrote:

transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.

Why would you run "D" rated tires when "E" are standard?

The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)

So if I am correct you are running a bigger tire that has the same load carrying capacity as the E tire that is stock.

Les Schwab on the West Coast is famous for selling people D big tires and saying they have the same carrying capacity as stock. That is true but very deceiving! The D has a much weaker sidewall and is not nearly as stable of a tire.

Friends had a F350 4X4 short bed and bought a 40' toy hauler and Les Schwab sold them Big Wild Country tires and said it would be fine. I advised strongly against it, they thought I was wrong because I don't like Les Schwab for many reasons.

Well they drove to Cali and back to WA and came over to me to apologize for not listening to me. They went to LS and reamed them because the rear tires were nearly bald in 3,000 miles and was a very bouncy and a scary ride. LS bought them a new set of tires that they used when they were not towing and stuck the Michelin E tires back on when towing.

So be very careful with your tires, not safe!