Jump to content

2018 2500HD Tire Replacement/Upgrade

cdh7917

By cdh7917
in Modifications & Accessories

Recommended Posts

Skeld Enthusiast

Skeld

Posted
Posted

One thing to note, the 275/65R20 BFG KO2's seem extremely narrow in my opinion.  Anyone else notice this?  I have some on +18 20X9 wheels and I'm not crazy about it.

 

I had some 305/55R20 Cooper STT mounted on them last year and I hated the road noise and I went back to stock wheels and the BFGs (sold the Coopers)  This setup looked ok but it did rub the front fenderwell material I believe in the front of the passenger side on a tight left hand turn.

  • Replies 46
  • Created
  • Last Reply
Waaazooo Senior Enthusiast

Waaazooo

Posted
Posted
One thing to note, the 275/65R20 BFG KO2's seem extremely narrow in my opinion.  Anyone else notice this?  I have some on +18 20X9 wheels and I'm not crazy about it.
 
I had some 305/55R20 Cooper STT mounted on them last year and I hated the road noise and I went back to stock wheels and the BFGs (sold the Coopers)  This setup looked ok but it did rub the front fenderwell material I believe in the front of the passenger side on a tight left hand turn.

I use this size in the winter. Excellent snow/slush traction


Sent from my iPhone using Tapatalk
Big Whiskey Senior Enthusiast

Big Whiskey

Posted
Posted
On 4/20/2018 at 9:00 PM, Skeld said:

One thing to note, the 275/65R20 BFG KO2's seem extremely narrow in my opinion.  Anyone else notice this?  I have some on +18 20X9 wheels and I'm not crazy about it.

I'm sure they are. BFG's are notorious for running on the narrow, and the 275 is a narrow size anyway...especially for a 34" tall tire. I've always thought 275/70/18 BFG's looked too narrow too. 

Waaazooo Senior Enthusiast

Waaazooo

Posted
Posted

Anyone understand why a tire size doesn’t really mean the size of the tire? I bought 295/60-20 which should measure a smidge under 34”...yet physically measured 35+ inches and over 12.5” wide.


Sent from my iPhone using Tapatalk

Skeld Enthusiast

Skeld

Posted
Posted

Coming from the stock 265 I thought it would be ok, guess I was wrong.  Next time I'll try something different.

 

I did use them for one winter and they were good.  This past winter I had Cooper Discovere M+S studded, and that worked fine also.

Waaazooo Senior Enthusiast

Waaazooo

Posted
Posted
Coming from the stock 265 I thought it would be ok, guess I was wrong.  Next time I'll try something different.
 
I did use them for one winter and they were good.  This past winter I had Cooper Discovere M+S studded, and that worked fine also.

Well... if you need studded... anything less than chains wont compare


Sent from my iPhone using Tapatalk
Skeld Enthusiast

Skeld

Posted
Posted

Yeah, I've gone both ways but I'm up in Maine and I'm plowing with the truck and also hauling snowmobile trailers up on logging roads and things like that.

  • 2 weeks later...
cdh7917 Enthusiast

cdh7917

Posted
  • Author
Posted

I haven't forgotten about this thread, but I'm currently in a holding pattern.  I'll explain...

 

I swapped all four Ranchos out for the Bilstein 5100s.  I am really pleased with the upgrade and overall the truck feels tighter when responding to road imperfections.  We have plenty of that in Colorado, so it's a noticeable improvement.  With less than 6K miles on my truck, the shocks came out very easy.  It was surprising, but almost not, to see that the Ranchos already looked like garbage with rust beginning to form.  I was also surprised at how soft the Ranchos are in comparison.

 

After that, I set about adjusting my keys to bring up the front.  After all is said and done, I am sitting at about 41" front (ground to fender lip) and about 42.5" on the rear (ground to fender lip).  The truck is noticeably higher when getting into it, despite only having been raised 1.5".  Handling is still great, no ill effects.  The rake is just right now too, IMHO.

 

My CV angles look good too.  No contact on the ridges of the boots either.

 

As for wheels and tires - All came in and they were supposed to be mounted last weekend.  Well, it turns out that the gloss finish on the Fuel Warriors wasn't as tough as the name implies.  The lips of the wheels had fine surface scratches all over from the cardboard boxes.  It was disappointing. 

 

We ended up mounting one up and test fitting it on my front.  With the +20 and a 285/65/20, there is very minimal contact with the felt wheel well liner at full lock.  I should have no problem to tie it back and keep it from being an issue.  I easily clear the lower air dam and have plenty of space it looks like between the tire and frame and upper control arm.

 

As for the wheels, I decided to go back to a matte finished wheel and asked that they order the Fuel Couplers.  Same size/specs as the previous deal.

 

Just waiting....again!

cdh7917 Enthusiast

cdh7917

Posted
  • Author
Posted

Finally!  The wheels came in last Friday, but I waited until today to have my good buddy that works at the shop complete the install.  We pulled the stock sensors from my original wheels and moved them to the new ones.  I don't have as much rub as it initially looked like I would.  I'm really happy that I went with the 285/65/20 tires.  They are the perfect size and the +20 wheel puts the wheels/tires are just the right spot - the treads are pretty much flush with the fender edges.

 

Here are the pictures!

 

Before:

CMYCWNF.jpg

 

After:

zKIRhjB.jpg

 

YGHbDAQ.jpg

 

dOdpq9q.jpg

 

xIQLhD0.jpg

 

irooaJJ.jpg

 

MZyEFMk.jpg

 

GKhSMsM.jpg

 

Pbd2r1Y.jpg

 

 

cdh7917 Enthusiast

cdh7917

Posted
  • Author
Posted
1 hour ago, 4wdriver said:

Nice! How are your tires pretty quiet?

Thanks!

 

I love these tires.  I had them in a 295/60/20 on my 1500 and didn't even consider a different tire this time around.  Good road manners, look good, two different shoulder patterns to choose from, do well in snow, etc.  And yes, quiet. 

 

My work commute is about 85 miles round trip, pretty much all highway.  I wouldn't even consider something else at this point. 

Big Whiskey Senior Enthusiast

Big Whiskey

Posted
Posted
On 5/7/2018 at 8:08 PM, cdh7917 said:

Finally!  The wheels came in last Friday, but I waited until today to have my good buddy that works at the shop complete the install.  We pulled the stock sensors from my original wheels and moved them to the new ones.  I don't have as much rub as it initially looked like I would.  I'm really happy that I went with the 285/65/20 tires.  They are the perfect size and the +20 wheel puts the wheels/tires are just the right spot - the treads are pretty much flush with the fender edges.

 

Here are the pictures!

Looks great! Very nice upgrade! I like the 285/65/20 size. It's a nice way to get a 35" tall tire without having to go to a true, 35x12.50x20.

Waaazooo Senior Enthusiast

Waaazooo

Posted
Posted
Looks great! Very nice upgrade! I like the 285/65/20 size. It's a nice way to get a 35" tall tire without having to go to a true, 35x12.50x20.

...which is a PITA unless you go high.


Sent from my iPhone using Tapatalk
OpsWest Enthusiast

OpsWest

Posted
Posted

Looking very sharp.

 

For reference I'm running 35x12.5x18 on stock wheels / no other modifications. I have a slight rub at the very end of full lock, but I tend to avoid the last inch of full lock. It must be the 18' offset or simply everyone avoided trying to mount these on stock 2500 and assume they rub elsewhere.

 

35's

 

after.thumb.jpg.2aa319e79103cf47d3eaa2a8d5e2ef1d.jpg.a7d7715bd9decd095b97c311930adb82.jpg

 

IMG_2157.thumb.jpg.1c3aea18167c576fd1edf6d277bfb915.jpg

 

 

 

IMG_2163.thumb.jpg.31b5912d4d19f9bf0e59a94ca02f46ff.jpg

 

Wheels turned to the point of minimum clearance (9 o'clock to the left / right on steering wheel) still has 1 inch of clearance.

 

IMG_2140.thumb.jpg.27aa8cc6ae68f59a28746070e92000d6.jpg

 

IMG_2137.thumb.jpg.5f4f29fa6b903b8a9c7bc0d949f10fba.jpg

 

Original tires

 

before.thumb.jpg.16047f7942bc0a1a893cfd231f5119cf.jpg.c58abdbbeb6c4d019ea9accfd3904e45.jpg

 

 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,965
    Total Members
    8,960
    Most Online
    DaleB
    Newest Member
    DaleB
    Joined

  • Who's Online   2 Members, 0 Anonymous, 1,303 Guests (See full list)

  • Latest Articles

  • Posts

    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Common Sense Assembly   Your driveline is forgiving of the occasional mistake. It will even often forgive the random serious blunder. But it will not forgive a continuous bad habit.      What? Not everything needs to be a five thousand word essay.       
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      We drove about 15 minute east today to visit a friend and saw a steep increase in price in the same county. About 50 cents a gallon steepper. 
    • Grumpy Bear
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Grumpy Bear · Posted

      Sure about that? A degree wheel and a dial indicator would lower your degree of assurance in that statement. 😉    It why we have offset keys and dialable timing sprockets. Just say'n.... I've built a few and have never seen one "On the money". 
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I will admit I haven't experimented much with pressure drops beyond the numbers I put in and part of that is that the numbers I used are fairly low and then found out it would trigger regardless at that 35 psi. Having said that I had tried before had changed the placard pressures and being that I have a 1 ton set to 80 on the placard for the rear I believe it triggered close to 60, the front I don't recall now for sure but thought maybe it could get close to 45 from that factory 60 placard pressure. So I never did figure out if it was a number of psi from placard pressure to the alarm or a percentage of the total placard number as some figured it was like a 25% drop from placard pressure would trigger it. So as to try and answer your question, I believe I set the placard pressure on the front to 47 or so and while I run the front tires at 40, they have dipped below that some if its colder and I haven't put "winter air" in yet and never once have had the front alarm go off. I would say that the answer your looking for is no, that if you set your placard pressure to 45, you have a certain amount of room to drop below that pressure before the alarm will go off.    The pressures you decide to run in your truck, that ends up being what makes sense to you based on what your carrying in your truck or if towing, then have to bump them back up to something that will carry the load in the rear and the fronts typically left at the same pressure. It all comes down to that chart I put the link to and using an accurate roadside scale to be your guide, both unloaded and then loaded to know your minimum safe pressures.    I just wish GM would allow a person to change the readings for the tire pressures to the English system of pounds as I have to look at that goofy metric reading that will never ever jive in my head and will go over and change it just to figure out what they are if need be and then change it back. 
    • TrueBlue
      No Software Updates - Old Build

      By TrueBlue · Posted

      That part I understand, that the dealer can do it. But I'm not understanding why updates that were available to the truck since it left the factory, or the dealership originally, would not still be available to it without dealer intervention.   I'm thinking along the lines of recalls. They stay available until they are completed, regardless of whether they are in warranty or not, or in the hands of the original owner or not. Why not updates as well, especially since some of those can be safety related also?

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...