Jump to content

Recommended Posts

Posted (edited)

My 2019 Sierra came with 275/65/r18 Duratrac Wranglers. They are getting due for a replacement. So I am looking for options others of tried. My criteria is:

  • I'd like an hybrid/offroad tire. I am 85% blacktop, 10% gravel, 5% mud.
  • It rains a fair bit here
  • We do get heavy dumps of wet snow 4-5 times a year (I am in Nova Scotia, Canada if that helps).
  • I would like to be very close to the stock diameter just for the sake of not adjusting speedo, etc.
  • I want to keep stock rims
  • I want something a little wider, so I assume those options would be a 295 or a 305.

 

I made up a spreadsheet and it seems that 305/60/r18 is very close to stock circumference, but there are _very_ limited options in this size. They ones that I have found locally are:

  • BFG KM3 - probably too offroad, looking for something more like the KO2
  • Cooper Discoverer S/T MAXX - this seems like a good option, but it has been discontinued in this size, as no one has stock in this size, and Coopers website no longer lists it.
  • Cooper Discoverer STT PRO - probably too offroad as well
  • Nitto Ridge Grappler - don't know much about this one
  • Nitto Recon Grapper - need to do more research on this one too

 

Has anyone run this tire size?  What model did you go with? How did it perform? How was on-road compared to stocks?

Edited by sheamus
Posted

Just remember that going to a 305 will make it track different on the road and mileage will go down because the contact patch is a decent amount wider than stock.

 

The Recon Grappler is a new Nitto Tire as of this year, it's better than the Ridge Grappler in my opinion. The Ridge Grapplers are pretty terrible in heavy snow and ice, lots of blocky tread with no sipes. The Recon has more edges to bit into stuff.

 

If Toyo makes the Open Country AT3 in that size or if Falken makes the Wildpeak AT in that size, those are great tires as well.

 

I'd probably stay with a 285/65/18 just for price, tire weight to try and keep some fuel mileage.

Posted (edited)

I'm running a 305/70/17 Nitto Ridge Grappler. Had to trim a fair bit to get this tire to fit with a 0 offset wheel. That included getting a mudflap delete and trimming the plastic. Also deleted the crash bar behind the mudflap but I could probably put that back on. You may get lucky if you keep the stock wheel as it will be pushed in closer to the engine bay. 

 

I live in Southern California so I can't comment on how these tire perform in the rain or snow. They are quieter and ride better than the stock Wranglers.

 

Noticed a slight decline in MPG but not bad. 

2DC8A02F-3DFF-4986-845B-8A8D7F584BFB.JPG

31B2534D-E443-4F3F-B46D-93FEEB05D581.JPG

C4A9CC55-146C-4B92-9DA0-836891719A56.JPG

Edited by HK_Crew

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Latest Articles

  • Posts

    • Congratulations Isttype, on your gmc. Really like my 2024 2500hd sle doublecab now with 85,500 miles.  I checked the oil today at 4800 miles since last oil change and barely reading on the stick.  I don't care if GM says it's Acceptable adding a quart every 2000 miles because that is 100% BS, It is not a 1966 Harley Shovelhead! Sounds like it's setting up a future failure like I had with my 1500 6.2l. Other than oil consumption problems, I really like the 6.6l gas and 10 speed is really nice.  Towed a light 4000 pound trailer last week and averaged 14 mpg.  I was pretty impressive that a 7300 pound gas truck did 14mpg towing, Later-
    • Long Term Cold Cycle Limited Testing   Back to the 1990's and XOM's million mile test. Since then there have been others and there will be more. Schaeffer's, AMSOIL to name two. Of these Schaeffer's is the stand alone which I will explain in a bit later.    http://papers.sae.org/600190/:   http://papers.sae.org/850215/:   Up to 75% of  engine wear occurs on cold starts. These two links (above) provide the technical reasons for engine wear. In a nut shell, and by a large margin, cylinder wear is what takes out most motors and even with a pre-oiling system that part of the engine is dry enough on cold starts and cold warm up to pierce Stribeck.   So when you put a motor, or a car, on a dyno for a million miles stopping only for oil changes, (yes fuel is uninterrupted) or break down maintenance, you are depriving the test of the most important part of it's wear cycle. Yes a million is then a pretty easy walk even for a mineral oil under those conditions.    How about cleanliness during the long test cycles? Same thing. Varnishes that stick rings and insulate parts are laid down by repetitive 'heat cycles'. It's the cool down the precipitates the varnishes. These long runs also hinder acidic attack caused by cold start richness and less than optimal cold start ring sealing. They hinder water formation and enhance breathing of the crankcase; the petri dish of acid formation, the first step in sludge formation, amalgamation and precipitation. These motors are also monitored and controlled for water and oil temperatures to within the "normal operating range".      https://www.swri.org/sites/default/files/sequence-iiih-test.pdf Note the test sequence in some boutique oils literature for testing, API IIIH, is not the standard used for the ILSAC G7 testing. Does that mean it is irrelevant? No, not as used. As used as a 'visual guide' it makes it's point. The G7 weighted piston deposit minimum is lower.      Back to Schaeffer's. That was a cyclical test of an engine in fleet service and not a dyno mule and if you saw the video it was not mirror clean but wear was low.    There are oils like BioSyn and other 'Renewable" source oils that taught cleanliness and have proven themselves in fleet testing. Havoline an other example.    The newest ILSAC G-7 test prioritize cleanliness, LSPI mitigation and fuel economy OVER WEAR. In comparison Porsche C30 Specification Verses ILSAC G-7 Specification below:      Some will balk that this graph isn't apples to apples and I will challenge that in that this graph represent the SPECIFICATION and not the any One Oil Performance.   It is absolutely possible to minimize wear, maximize cleanliness and mitigate LSPI etc., It just isn't cheap and currently I see none that are not walking toward profit over performance.     
    • I don't think you will need a split, separate product, etc., the OBD port should be able to deliver everything you need. Since your device would be plugged into it all the time, it wouldn't miss anything.    Hardware in this case will be the easiest part of your project - ELM 327 devices will already deliver all the data you need. Reporting/software is where your advantage/marketability is.
    • I do too. I’ll never be stuck again 😂
    • It has happened to me a few times. I carry a jumpstart-tire inflator with me.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...