What does it take to get 33s on a duramax? I have a ford SD and they fit stock. My buddy wants to add 33s to his duramax, but his truck looks smaller than mine and he is not sure if they will fit. What does it take to run 33s? Thanks
I saw on this page people were moving the bumpers out. I have 285's (32) and I trimmed the plastic beneath the bumper with a saws all. They used to rub quite a but but not often now. Drivers side only when the weigth is transferring oin a turn. It works o.k. I also cranked my torsion bars and that helped alot as well. I think 33's look to big for the front end stock. He will need to lift the bars or the truck a little to get it to look right.
I am sorry to hear that. I have had my set on for about 15K and they still look new. Before I purchased mine, there were several on the board that were running them and recommended them. I am sorry you didn't have any luck with yours, I am very pleased with mine.
BTW - I think the A/Ts have a 50K treadlife warranty on them.
Stock trucks do not have enough wheel well clerance to run 285s on 16x8s--like I have--and they do not have adequate clearance even with the torsion bars raised 2"--like I have done. I have also re-formed the inner fender liners and tied back the parking brake cable. I am not terribly excited about having raised the torsion bars, though I did do it with specially designed keys and the ride is excellent.
I get rubbing when braking through a "dip" and turning the wheel. I might be able to get clearance by rolling back the inside aft corner of the fenders. That is where my clearance is lacking--it's about 3/4". There is no way I can run chains right now.
I have plenty of clearance on the front side of the wheel wells since I have a Frontier full front end replacement.
What gets me is a stock truck with 245s has about the same clearance as mine. This limited wheel well space is a bad idea from GM.
<DIV>"Stock trucks do not have enough wheel well clerance to run 285s on 16x8s--like I have--and they do not have adequate clearance even with the torsion bars raised 2"--like I have done. I have also re-formed the inner fender liners and tied back the parking brake cable. I am not terribly excited about having raised the torsion bars, though I did do it with specially designed keys and the ride is excellent. "</DIV>
<DIV> this is my third duramax now, all thee had 33" tires, same senario on all, slight rub on a sharp left hand turn when crosing a curb like your sidewalk, and i have never had the bars lifted, or taken sharp tools to my fenders
Just stumbled onto this site and it looks like a great site. I am running 285's on 16x8 wheels with a 4.5" back spacingon my 2500HD and I have no rubbing issues. I have installed the GM "green keys" to raise the front 2" and did trim the front bumper cover about 1". I also had to zip tie the inner fenders back for clearance. I am running the factory slash gaurds also and have no rubbing. Check out my signiture for the pics.Edited by: 03GMC2500HD
the size of the tires have less to do with rubbing than back spacing on the wheel does. if you go with a wheel that has 5+" of back spacing, you will have lots of clearance. this is the reason some here have success running the H2 wheels and tires on a stock truck (albeit with the bars cranked). keep the tires tucked in and your OK
My truck has 4.5" backspacing with my 16x8s and 285s. I have the nose up 2" with the Hill 4WD torsion bar keys. I have the parking brake cable tied back, and the fender liners tied back and reformed with a heat gun (BTW this works very well). I also have a front end replacement that has much more clearance than the stock bumper.
When I turn my steering wheel between 3/4 to full in either direction, my clearance goes down to about 3/4" between the tire and the rear inside portion of the fender well.
The rest of you guys with 285s or 33s. How much clearance do you have with the steering wheel turned 3/4 to full?
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