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front tires bent in

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What causes front tires to bend in? I have a International 1086 that the tires are about 3" ( didnt measure just guessing) closer at the bottom than at the top. I looked on tractor house and most other ones look straight up and down. Also what would i do to fix it? Thanks.
 
The "bent in" appearance is by design---It's called camber. If the tractor is a tricycle type (narrow front), the purpose is to allow for easier steering, while carrying lots of weight. This arrangement also allows a larger portion of the weight to be carried by the inner/larger bearing, rather than the lighter bearing at the end of the axle shaft.
 
It is a wide front and i know they are supposed to turn in a little but this seems excessive. My fords and new hollands barely show it. It does drive just fine but i did not know if it needs to be fixed or not. thanks for the reply.
 
Even on a wide-front vehicle, the camber allows the tire to be more directly below the inner bearing, which in turn will cause that bearing to carry the majority of weight.
Don't know why only some mfg co.s use this principle.
 
It is designed that way to get the wheels to steer easier. If you extend a line down through the center of the vertical part of the spindle it should meet the ground near the center of contact of the tire on the ground. That allows the wheel to pivot on that spot when steering. The farther the center of the tire contact is from the axis of the spindle the harder it will be to steer and the more load will be applied to the inner wheel bearing.

Putting big tires on a tractor and then offsetting the contact area away from the spindle axis can lead to broken spindles, especially when used with a loader of front end weights.
 
I put 11:00 tires on my 1066. The originals were 10:00.

Do you think that extra inch of width would make a big enough difference to make the spindles break? I seem to break at least one every year when doing FEL work. My bales are 1100 to 1300 pounds, not really that heavy.
 
ridgelane: The older IH tractors did not have the heaviest front end on them. The where well known for breaking spindles and pivot pins. I have seen several after market companies that offer a heavier spindle.

Here is one company that is saying these are heavy duty.

https://www.link_disallowed/Heavy_Duty_Spindle_For_International_Tractors_p/104345.htm
 
I seem to remember John Deere having the same problem on the 3020 and 4020. There was a kit available to change them over to a Case front end for loader work.
 
Seams like 100 years ago I hauled Ag equip. for the Hiniker Co. one winter. When my GMC astro with power steering had the turbo go out they put me in a trans-tar IHC without power steering. It had what I think was called center point steering and I gotta say that steered about as easy as the power steering truck. I never liked the way it looked with them hubs sticking way out like that.
 
The local tractor wrecker used to sell an adapter plate to change the 4020 axle to a 5020 axle. From what they said, it is no longer available.

If IH didn't have the steering set up as it is, it might be easy to change to some type of heavier front axle. I've never really looked into a complete axle change. It was recommended that I cut the tubing off the spindle end and put a case spindle in its place.
 
All the big ih's are like that, it looks strange eh? My little Kubota is the same way with the bevel gear 4wd axle. I had never seen a 4wd done like that.
 
Pictures can be deceiving.

If your camber were truly unusual, you would notice something clearly bent on the front end of your tractor.

If it's even on both sides, that's a dead giveaway that the camber is normal. It would be highly unusual to have the same exact damage on both sides.
 
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