What, at the mall, in the mud, parked in your driveway?
How big tires before breakage?
Postmaster
Joined: Jan 2005
Posts: 2,753
Likes: 3
From: Phenix City, AL
You're running a D60 up front and a 10.5 in back, not exactly small parts.
Here's a ? for you. How big of tires do you want to put, rather than us trying to guess? Tell us what you want and we'll tell you if it will work or not.
If you don't have lockers and just the rear LS, the breakage issue won't be real bad because you'll have some slip. Start adding HP and torque with lockers and that's when you might have issues.
I'm running the stuff list in my sig and do pretty much the same thing you are talking about and have no problems.
Here's a ? for you. How big of tires do you want to put, rather than us trying to guess? Tell us what you want and we'll tell you if it will work or not.
If you don't have lockers and just the rear LS, the breakage issue won't be real bad because you'll have some slip. Start adding HP and torque with lockers and that's when you might have issues.
I'm running the stuff list in my sig and do pretty much the same thing you are talking about and have no problems.
Last edited by BFR250SD; Sep 19, 2005 at 11:13 PM.
Post Fiend
Joined: Nov 2001
Posts: 5,871
Likes: 0
From: Coutts Canada
Yeah for what you want to do, the truck as is should be able to handle a 38" tire if driven and not beaten on, but i would stick with a narrower tire (i wouldn't go wider than a 16" tire, but hey thats just me 
), that way your truck will have a better contact patch on the trails and rocks, and with such a heavy rig as yours the higher weight and narrower tire should do wonders on the trail and rocks and mud around 24" deep.
), that way your truck will have a better contact patch on the trails and rocks, and with such a heavy rig as yours the higher weight and narrower tire should do wonders on the trail and rocks and mud around 24" deep.
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
on a 03 F250 stock tires are too big for the front end. and that is for a street driven vehicle. They have a solid unit bearing for wheel bearings that don't last very long (mine went 84,000 miles on one) some guys actually can get 130,000 miles on them but as tires go up miles that they last go down fast have heard of guys only getting 10k miles on those bearings and at $545 list or $280 discount price they aren't exactly cheap to replace. to make them last longer take the vacumn line off the back of the steering knuckle, and put a pipe plug in there it will help some.
Your other problem is the diesel is so heavy that those bearings don't last as long as the guys with gassers, and adding bigger tires is really going to tear it apart.
Your other problem is the diesel is so heavy that those bearings don't last as long as the guys with gassers, and adding bigger tires is really going to tear it apart.
Lead Driver
Joined: May 2000
Posts: 9,236
Likes: 12
From: Senoia, GA
with those wonderful unit bearing hubs i wouldn't go any bigger than 35's. ya you see superduty's running 38's all the time but what you dont see is how many times they have changed those bearings out. 35's should do you justice if you dont do anything hardcore, all out *****-to-the-wall, baja type mud racing or anything
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Junior User
Joined: Aug 2005
Posts: 88
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well darn, I was running 35's on a TJ, with lockers, D44 rear, D30 front, and didn't break anything (but had to drive conservative), with the SD, was hoping to go bigger .......... I just didn't know how much bigger before stuff started breaking
Last edited by IB Tim; Sep 20, 2005 at 07:23 AM.
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Postmaster
Joined: Jan 2005
Posts: 2,753
Likes: 3
From: Phenix City, AL
The problem with the unit bearings is you can't do any maintenance on them and you have to replace them as a whole. Dynatrac has a sweeeeeeet replacement for them, but it also costs twice as much as the OEM replacement, BUT you get what you pay for with it.
New User
Joined: Aug 2005
Posts: 6
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From: massachusetts
tires
Hello, this is my first post, I have a 05 250 crew 4x4 gas and would like to know if I can get 35's on the stock 17x8 alcoa rims and get them under the wheel wells and run them as a daily driver on a stock f250. the factory tires are 265's it looks funny with them . If any one has any info or advice I'd appreciate it
Postmaster
Joined: Jan 2005
Posts: 2,753
Likes: 3
From: Phenix City, AL
Originally Posted by chic
Hello, this is my first post, I have a 05 250 crew 4x4 gas and would like to know if I can get 35's on the stock 17x8 alcoa rims and get them under the wheel wells and run them as a daily driver on a stock f250. the factory tires are 265's it looks funny with them . If any one has any info or advice I'd appreciate it
Some of the SD's come with wheel / tire combos that are 34 1/4 and guys have put 35's on the stock wheels. Only problem is most 35's at a little too wide for a 7" wheel. They will fit, but you will wear the center of the tire if you're not careful. Just a little advice on this though, add a leveling kit to make sure you don't have any rubbing issues. The truck, in my opinion, looks better leveled out anyways.
