Mine came with the dealer upgraded chrome 6 spoke rims, anyone lifted and running decent size tires on factory rims ? I’d like it to have factory look but maybe on 33’s. And I’m not sure how much lift it would take to make that happen either. Any suggestions?
Anyone lifted running bigger tires on factory wheels?
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I think you'd have to go pretty high to get 33" under there, probably 4" - 6". The issue is the front bumper makes the wheel well so square that almost any larger tires rub without a lift. Plus, my stock rims weren't wide enough to handle the 32" KO2's I wanted. I ended up with 285 x 70 x 17 and sold my original wheels and tires.
I also wanted more sidewall for off-roading so I went with smaller wheels than stock. I went with a 2.5" lift but had to replace the front bumper and do some cutting and trimming of the wheel well and specifically behind the front tire to even get those under there without rubbing. The back fit without trimming with the 2.5" lift.
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I also wanted more sidewall for off-roading so I went with smaller wheels than stock. I went with a 2.5" lift but had to replace the front bumper and do some cutting and trimming of the wheel well and specifically behind the front tire to even get those under there without rubbing. The back fit without trimming with the 2.5" lift.
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What does that add to your effective running radius? That change adds directly to trannie load, which I don't like. It's an ENGINEERED system. This is my lifetime rig. While we load it with a trailer and hammer down on hills, I would rather stay in my factory "Goodman Stress" zone and drive for years, than be dissing it next year in this fora for a slipping trannie....
The lift I did was also engineered to maintain the same but I ended up doing the DT for both engine and tranny spec'd out for the lift and tires. Turning radius is no problem and she drives and rides much better than stock IMHO.
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Glad you're happy, but what is involved in a "tranny DT"? Did you change final drive ratios front and rear to reduce trannie loads, for example? And if so, how much was your effective rolling radii increased from the new tires, and how what were your old and new gear tooth counts? Again, no critique, just interested in the nitty gritty...
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I have a 3 inch lift and 2 inch spacers and stock rims. I just jumped from a wrangler good year 255 65R17 to a Nitto Ridge Grappler 265 70R17. I had to cut about an inch up on the inside of my wheel well for turning so I didn’t rub on the front and back but I love them! They should get 50,000 miles and i got them threw firestone and they are going to rotate them every 3k miles. It did take me from city 26 to 23.
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I am running 255x85x17 Toyo AT II Tires, no trimming, only have a minorrub at full lock. I have changed my ring and pinion gears to 4.10s, 4.56's with 33's would be better IMO. 80K miles on the truck, it's a 2017 LBCC. Tune is by Duramax tunes. Daily mpg is 22.
4, highway at 70mph is 27+/-,I tow a 28ft toy-hauler around the Rocky mountains fishing and average 14.7mpg when I tow.
4, highway at 70mph is 27+/-,I tow a 28ft toy-hauler around the Rocky mountains fishing and average 14.7mpg when I tow.
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407 Posts
Like your smart numerical gear ratio increase, and congrats on your 80K. What's the loaded weight of your toy hauler?
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Heaviest to date was 7k lbs. I also have a titan xl tank and a decked system, 10k winch,and on board air. Next project is to upgrade suspension, I like ARB.
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The only thing I haul is my small cataraft for Flyfishing
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Sorry, wrong question. What is the GCVW of your combo, at it's "heaviest"?
Hope you realize that, unlike the older K2500's, the great trailer rating comes from everything working together. For 23 years, I routinely pulled (over) heavy with my '95 K2500, X cab, short bed with a 350 and the trailer tow package. But unlike our current rides, it was (over) built for it.
IMO, frankentrucking out these vehicles ends up with posts in these fora whining about problems...
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Which lift did you do? I just got a 2022 Z71 Duramax
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