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GMC Sierra/Chevy Silverado 2500 & 3500 - II ![]()

1057 messages, Last post on May 12, 2002 at 4:56 PM
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| I am assuming you have a 4-wheel drive. I have an '01 Chevy 2500HD 4X4 ext. cab short-bed with the 6.0/4.10. I think the stock tires you have are 245/75/16, not 245/85/16. 245/75/16 are what came stock on my truck. They were the Firestone Steeltex. I just put 285/75/16 Cooper STT (mud tires) on American Racing 16x8 wheels. I had to crank the torsion bars up 4 turns (approximately 3/4" raise) and trim the front air dam and the inside front fender well covers on both sides. The left front fender well is quite a bit tighter than the right front fender well. I still get a slight rub under the left front fender well at the back when the wheels are turned sharply to the left. Trimming on the back side is a little harder than the front as the body and emergency brake cable are in the way. There is not enough rubbing for me to mess with trimming the back side and rerouting the emergency brake cable. There is plenty of room in the back without any mods. However, I would say if you have both the crew cab and the diesel, I would bet that your truck probably sets a little lower than mine in the front. Therefore, I would not recommend going larger than 265/75/16 unless you want to do some work. Unfortunately, the only lift that I have currently found for the Chevy/GMC 2500 HD's is a 6" lift. I was considering a 3" lift to accomodate the 285's, but so far the 6" is all that is available. That's a little too tall for me (and my garage). I am very happy with the Cooper tires so far. They were about $50 per tire cheaper than BFG M/T's. We'll see how they wear. I've always had the BFG tires in the past, which are very good tires. I hope this helps. | |
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" was considering a 3" lift to accomodate the 285's, but so far the 6" is all that is available"
Check out http://www.performanceaccessories.com they have a 3" body lift |
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| I don't want no body lift. If you happen to see a 3" suspension lift, please post it here. | |
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i figured you wanted a suspension lift. Just thought id throw out the body lift too |
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| You may want to consider BFG M/T 255/85/16 on your stock alloys. I have these on my 01 2500hd 4x4 CC w/ 6.0 and 4.10 . They are 33.3 dia. and work great on the stock 6.5 rim. I did crank the torsion bars up 5 turns (1")(don't forget to have it aligned). I didn't have to trim the frt. air dam but I did have to pull the driver side inner fender in with a few sheet metal screws and I also tied the emergency cable back with a zip tie to reduce rubbing on a hard left. It was about a 10 minute fix. If you want ultra quiet tires the BFG's probably aren't for you, they make some road noise. Also if you have 4.10 gears the increased dia. to 33.3 from the stock 30.6 dia. will change your overall gearing to approx. a 3.77 gear. I really haven't noticed any loss of power from the change but remember it will affect your speedo slightly. | |
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If you want a quiet running tire that won't beat up your fenders like a mud tire, and has a 40,000 mile treadwear warranty, the Kelly Safari AWR is an excellent choice. Deep tread is great for winter driving, halobutyl liner retains air pressure longer. It's a premium all around tire, reasonably priced, and one of the few available in LT255/85/16. I have them on my 2500HD Duramax, on the stock 6.5 inch rims. No rubbing, no turning up the torsion bars either (33.05 inch diameter). http://www.kelly-springfield.com/products/light/sawr.html |
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| We will no longer own our newer Chevy...Hope no one else out here has to go through what we are, but I know some of you will. lol | |
| So are you going to trade up to a Ford Super Duty, you say you already got the most important ingrediant........a great friend that is an ACE Ford Mechanic..... | |
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| wait until the suit has been taken care of and we get rid of this piece of junk Chevy. We will consider Ford and Dodge - I've always liked Dodge, but their 4 door is no where near the Ford and Chevy, size wise. Most likely will be a Ford diesel. Our friend is an ace mechanic, but works for Ford. He's fixed my old Dodge, and our older Chevys. He's wonderful, as he explains and teaches me about the drivetrain as he goes, my hubby doesn't have the patience. | |
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I am running a set of no-name Coopers in an LT 255/85-16 without any adjustment to my torsion bars, like Quad, with no rubbing at full stop in either direction. They are louder than the stock Firestone AT's, but not as loud as a set of MT's. I was just surprised that you had clearance issues on the stock wheels. -Eric |
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