rear tire wear

[seral1984]

Hi,
I have a Landcruiser 1993 and the rear tires are wearing on the inside. The front tires are ok and about 40 % worn has anyone had this problem ?

 

[landcrshr]

How long has it been since you last rotated the tires?

 

[86tuning]

Inner edge wear is often due to toe-out on the affected tires.

I would first inspect the rear wheel bearings, then get the alignment checked

 

[Offroads4x4]

A 4 way alignment sounds in order. I hope you haven't bent your axle tubes from a hard hit. Strange it's the insides that have worn down.

Start simple wheel bearings, bent rear control arms, broken mounts or worn bushings. Where the tires on the front first and rotated to the rear and now you noticed?
Just some thoughts.

 

[IdahoDoug]

How long have you had this vehicle? When someone comes on their first post and asks this the first thing I think if is "He probably just bought it and the PO rotated the tires the day before he stuck a for sale sign in the window because worn fronts are easier to see than if you hide them on the rear." So you may have a problem with the FRONT, not the rear unless you've owned it for a long time.

DougM

 

[greentruck]

What Doug said was going to be my suggestion.

Of course, it might be that the tires never were rotated until someone decided to sell the truck. Maybe they can get that pattern from normal running, but without rotation, then remounting?

 

[IdahoDoug]

Also, to the OP, you should be advised that poorly rotated tires can mean different rolling diameter which can mean damage to your center diff's coupling over time. An update would be nice, too with so many people responding to your thread.....

DougM

 

[seral1984]

never done rotation .

 

[seral1984]

Hi,
I have a Landcruiser 1993 and the rear tires are wearing on the inside. The front tires are ok and about 40 % worn has anyone had this problem ?

i have had this car for about 5 years and have never had prblems with this issue, know the front tires are michelin XC LT4 and the rear are DAKOTA DEFINITY H/T I do alot of driving because of my job, what i did notice was the air pressure on the rear tires was about 27 lbs, but I thougt that if the tires were low on air they would rear on both sides and not on the inner part.

 

[greentruck]

i have had this car for about 5 years and have never had prblems with this issue, know the front tires are michelin XC LT4 and the rear are DAKOTA DEFINITY H/T I do alot of driving because of my job, what i did notice was the air pressure on the rear tires was about 27 lbs, but I thougt that if the tires were low on air they would rear on both sides and not on the inner part.

OK, you've had it for 5 years and never rotated anything. That establishes a baseline, although not a good one...

Since the 80 series is AWD, you should have 4 matched tires. Otherwise, the slight differences in diameter can cause a variety of issues, depending on the mismatch. In your case, it would not surprise me to find out this is the cause of your strange tire wear pattern.

The primary way you keep matched tires close to the same diameter is by rotation. Unless you've put very few miles in that vehicle, you're way overdue for that. A 5,000 mile rotation schedule is probably a good one, right off the top of my head and without looking at the owners manual for guidance.

My best guess is there's nothing wrong with the rear axle to cause this. Since it's even on both sides from what you've indicated, it's probably not a bent axle.

BTW, not sure about Dakota's, but 27 lbs psi sounds rather low for a tire on an 80 for on-road driving. Low air pressure can also cause weird wear patterns. Not sure if that's a factor here, too, but it could be.

I'd get a set of matched tires, put them on, and monitor tire wear closely. Most likely, they'll be fine -- providing you rotate regularly. Do check the manufacturer's tire specs to assess where the psi should be in accordance with the actual weight on each tire. The door sticker will give you guidance on stock tires, like the Michelin LTXs, but truck tires will use a different, higher psi range.

 

[Offroads4x4]

So tires are warring in a strange pattern and the answer is to buy a new set of tires and run them. Then check them to see if they ware the same pattern again.

STOP.

Get a 4 way alignment to check things out first. You need a hard baseline or otherwise your most likely to be starting a thread again over tire ware.

You'll be money ahead in the long run.

 

[greentruck]

I'm no alignment pro. Certainly wouldn't/didn't discourage that.

However, will an alignment done on a mismatched set of tires really be valid anyway?

Just wanted to note he needs to get four matched tires on regardless and rotate regularly. Obviously, if there's an issue beyond lack of regular rotation, low tire pressure, and generally not paying attention to something -- tires -- that can get you killed, I'm all for dealing with it.

 

[Offroads4x4]

Good alignment shops with racks do there 4 way alignments off the rims and not the tires with lasers.

Worn tires will always play into the equation some but if you have all the tires the same size at the same air pressure even different brands should be close enough for an alignment. Make sure you have both tires with the same ware on one axle (the front or back).

You need your baseline to start from.

Spending $800.00 + for tires is foolish if you don't have a solid baseline to start with. Your just throwing good money down the drain.