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2004 2500hd Crew Cab Tire Size

rjirvine

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rjirvine Enthusiast

rjirvine

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I have a friend that has a 2004 2500HD crew cab. He tows infrequently with it and asked my advice on tires/shocks. I told him to go with monroe reflex shocks. He did, and loves them. As far as tires, his truck came with 245's load range E. He replaced them with 285 bridgestone duelers Load range E (dont think they were revos) because he liked the look of the bigger tire. I told him to go back to 245's load range E in a Michelin LTX M/S (my personal favorite), to keep his tow rating stock and improve mileage. He does only highway miles. I personnaly think the monroe reflex shocks and Michelin LTX m/s tires are a great combo for a "just right" ride on highways. Of course everyones experiences and opinions differ. Just telling you guys what works for me.

 

What do you guys think? Is this proper advice? I never tow and only have a 1500 not a 2500HD. According to tire rack, the 245's are the only recommended tire size for his truck.

iscsidude Enthusiast

iscsidude

Posted
Posted
Why'd he go with the AT2's vs the M/S if he only drives highway? The M/S will ride a bit better.

 

I'm thinking one reason might be that Michelin doesn't offer the M/S in either 245/70/17 or 285/70/17. At least not on their web site.

 

I've got LTX M/S on my 95 Sierra and they are like the best tires I've ever owned. I'll likely go with BFG now for my 08 Sierra.

svensk Senior Enthusiast

svensk

Posted
Posted
Why'd he go with the AT2's vs the M/S if he only drives highway? The M/S will ride a bit better.

 

I'm thinking one reason might be that Michelin doesn't offer the M/S in either 245/70/17 or 285/70/17. At least not on their web site.

 

I've got LTX M/S on my 95 Sierra and they are like the best tires I've ever owned. I'll likely go with BFG now for my 08 Sierra.

 

ok. yeah I got the 265/75/16 m/s

Zembonez Senior Enthusiast

Zembonez

Posted
Posted
He was told by the tire guy that the LTX at2 was the newer upgraded version of the LTX m/s, so he went with that.

I don't think he did anything wrong. On the highway I've always gotten just as good if not better mileage with a larger tire (within reason).

rjirvine Enthusiast

rjirvine

Posted
  • Author
Posted

Well, the bottom line is that he loves them and says he can't even hear any tire noise compared to his last tires. Plus, he says the handling is better. It's my understanding that it takes about 500 miles for tires to "break in" and get the rubber compunds into the "meat" of the tire, but I may be wrong. I recommended a mom and pop shop that a friend at work had referred me to and they were very happy to have his businees. There is road construction where they are and business has been way down. But they treated him like a king, gave him a discount and had the tires on before they had estimated. He's a happy camper. I like giving my business to places that put an emphasis on customer service ( a rarity these days) and value.

 

Point of order: His LT tires say 80PSI cold, which i believe should be his minimum pressure (vs P rated tires that give a max rating). He said he's gona run 65 PSI unless hes towing. I think he should put 80 psi max, at least for mileage and wear? Am I wrong? Anyone think this is a pooridea?

2000DV4.8 Senior Enthusiast

2000DV4.8

Posted
Posted

Just because the sidewall says 80psi, doesn't mean that you should run it there. That is the maximum safe pressure you can run. The best starting point is the door sticker, then adjust to your ride/handling preferences.

rjirvine Enthusiast

rjirvine

Posted
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Posted

I respectufully disagree. For LT rated tires, the xx psi cold means thats the MINIMUM psi for the tire and load range. For P rated tires, xx max PSI is of course the max, and you should follow the door sticker. There's a HUGE difference in LT and P rated tires as far as default pressures, unless I don't understand the whole concept correctly.

gave20 Senior Enthusiast

gave20

Posted
Posted
I respectufully disagree. For LT rated tires, the xx psi cold means thats the MINIMUM psi for the tire and load range. For P rated tires, xx max PSI is of course the max, and you should follow the door sticker. There's a HUGE difference in LT and P rated tires as far as default pressures, unless I don't understand the whole concept correctly.

 

 

Huh, the sidewall pressure is always the maximum and there is no need to run 80PSI on an unloaded truck. 50PSI in the front and 40-50 in the rear will give you the best wear. The only way to tell for sure is to take tire chalk, mark the tread and see which PSI removes the chalk across the entire tire after a short, 1 to 2 mile drive.

2000DV4.8 Senior Enthusiast

2000DV4.8

Posted
Posted

Like Andy said, the number on the sidewall is always the maximum psi. Running 80 psi in an unloaded truck is only causing the tires to wear in the center, and the truck to ride like crap. Trust me, I did that for a while. It sucks.

 

Just because it has a higher max psi, doesn't mean you need to run the pressure any higher than in a P tire. The LT tires have a stiffer sidewall, so in in theory, you could run less pressure, since at the same pressure, an LT tire will hold the same amount or more weight than a P tire.

 

The best way to find the correct pressure for new tires, is the flower test. Open up a bag of flower, and dump a pile in the driveway. Then drive through it, and if the tire pressure is correct, the imprints of the tire will be the same depth all the way across. If they are deeper in the center and shallower on the sides, the truck is riding on the center of the tire, and the pressure is too high. (deeper on the sides, pressure is too low etc...)

svensk Senior Enthusiast

svensk

Posted
Posted

You won't wear those tires out running them at 80psi. You'll get a bit better mileage with that too. My mich ltx m/s c range tires have a max psi of 50 and I've run at 50 for a very long time. They simply do not wear like other tires. They're like steel. I've got free rotations for life at discount tire where I bought them a couple years ago and they always filled them back to 50 for me when I go in.

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