tyres wearnig funny???

33'x12.5x15 maxxis bighorns, 15x8 rims, 4" lift dobbo med rate coils, efs xtreame shocks,running front tyre pressures at about 28 psi, rears at 26psi unloaded, ive ran these pressures
with two sets of these particular tyres, done a rotation yesturday, noticed 4 lugs on the inside lugs only , 2 lugs then directly opposite those lugs 2 more lugs are wore down 2-3mm more than every other lug on the tyre, this is on all 4 tyres, same spot, gives a vibration through the whole car randomly around 100 ish kays, any one got any input as to what may cause this????
went to bob jane t marts, they were very quick to blame my suspension, i replied with its all new at about the same time including the car been completly rebushed, they still insisted on it been the suspensions fault......and told me i should be running 40psi, when considering the tyre states 35psi max when cold fully loaded...!!!!!!!! oh and the tyres have done 35,000ks, plenty of tread left, only started doing this in the last 5-8000 kays...... rest of tyre wearing pretty well considering..

I think your pressures are too low for on road maybe go to 35 for around town and 40 for HWY.
Hopefully your wear will be more even, Try rotating them every 5000K as well to even out the wear

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Originally Posted by td42dan

33'x12.5x15 maxxis bighorns, 15x8 rims, 4" lift dobbo med rate coils, efs xtreame shocks,running front tyre pressures at about 28 psi, rears at 26psi unloaded, ive ran these pressures
with two sets of these particular tyres, done a rotation yesturday, noticed 4 lugs on the inside lugs only , 2 lugs then directly opposite those lugs 2 more lugs are wore down 2-3mm more than every other lug on the tyre, this is on all 4 tyres, same spot, gives a vibration through the whole car randomly around 100 ish kays, any one got any input as to what may cause this????
went to bob jane t marts, they were very quick to blame my suspension, i replied with its all new at about the same time including the car been completly rebushed, they still insisted on it been the suspensions fault......and told me i should be running 40psi, when considering the tyre states 35psi max when cold fully loaded...!!!!!!!! oh and the tyres have done 35,000ks, plenty of tread left, only started doing this in the last 5-8000 kays...... rest of tyre wearing pretty well considering..

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That is way to low mate.... most guys run between 35-42psi, I run 42 mostly as I tow a lot.

Hi mate, bit off topic but tyre pressure has been discussed previously and I'd say you are to low.

I checked with Bridgestone, they recommended 40 front and rear, and 45 if towing 1500kg. They said ignore the tyre pressure placard from the dealer as they don't have to pay for the tyres, they just want to give you the most comfortable ride. These are recommend pressures for blacktop naturally.

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Originally Posted by threedogs

I think your pressures are too low for on road maybe go to 35 for around town and 40 for HWY.
Hopefully your wear will be more even, Try rotating them every 5000K as well to even out the wear

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Originally Posted by Bloodyaussie

That is way to low mate.... most guys run between 35-42psi, I run 42 mostly as I tow a lot.

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Originally Posted by Apollofish

Hi mate, bit off topic but tyre pressure has been discussed previously and I'd say you are to low.

I checked with Bridgestone, they recommended 40 front and rear, and 45 if towing 1500kg. They said ignore the tyre pressure placard from the dealer as they don't have to pay for the tyres, they just want to give you the most comfortable ride. These are recommend pressures for blacktop naturally.

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Why are you guys recommending him to exceed the the pressure rating of his tyre?.......... Really

Dan, When I was running my maxxis on the road I too used low pressures and havnt had abnornal wear. I probably would at least take them up to 30-32 psi which is what I generally ran.
I would be closely inspecting your shocks. as, beside the whees and tyres are the one only common thing on each corner of the wagon.

My first thoughts were that your tyres are under inflated, specially if I read correctly and the outer parts of your tyres are wearing faster than the inners........ But as beneboy states, check out your suspension geometry etc.

Don't stroke it, TAP it!!!!.....

A guide to tyre wear
If you look along the tread line of the tyre (from the back to the front over the top of the tread.
Wear on both outer edges of an individual tyre, all the way around = underinflation.
Wear on centre section of the tyre, all the way around = overinflation.
Scalloping can be caused by several things and I do not agree with shocks as the main cause. Shocks that are in poor condition will not help the issue but will not be the cause.
Wear around the tyre at differing heights (when looking across the top of the tyre from the rear), so tread is low, then high, then low etc as it goes around the circumference, but is fairly equal across the width, will be what they call static out of balance. This happens when one side of a wheel is heavier than another side. If you stuck a chunk of mud on the tread somewhere, it will cause the wheel to rotate until the mud is at the bottom (when wheel in air). This inbalance leads to an 'up-down' style of movement when driving and will result in vibrations or shudders through the steering if on a front axle, and will resonate through the car if on the back axle.
You can have tyres that are scalloped across the tyre and makes the sections of tread look like its worn like wedges. If this is all the way around and looks similar all the way around, it can be caused by tow-in or tow-out issues (you can tell by looking at the way the 'wedge' goes if its tow-in or out). This type of scalloping can also be caused by loose steering uni-joints, mainly in the drag link that links both wheels, or other steering components that allow the wheels to be pushed or dragged at an angle.
Scalloping that is a little uneven can be caused by dynamic wheel balance issues as the wheel wants to wobble sideways as well as up and down. This is when a wheel has a weighted section more on one side, but off-set from the middle. So if you stuck a weight to the side of you tyre you would get 'dynamic' issues.
This uneven type of scalloping can also be caused by loose wheel bearings.
If you have wear on the inside of the tyre more than the out (all the way around), this is due to a neg camber issue. If in a Patrol, I'd be considering your steering / king pin bushes and /or wheel bearings.
Keep in mind that mud tyres are hard to balance and keep them balanced. It took me 3 goes to get it spot on with my 33's and I have done them again end of last year, and will be doing them again soon as the wobble is back.
I had more than 200g on one side of a wheel when they were new.
Muddies, especially cheaper ones, are hard to balance unless the machine is on the right setting and the fellow knows exactly what he's doing.
If you have the wheels perfectly balanced, you should have no issues.
Tyre pressures generally wont cause real bad vibrations but if the tread was even a slightly different compound in areas (a fraction softer in one location than another) if it was a cheap or dodgy batch, then you will hit a 'soft-spot' each time it rotates. This is fairly unlikely. I'd be considering balance and physical items like steering and bushes.

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Originally Posted by Ben-e-boy

Why are you guys recommending him to exceed the the pressure rating of his tyre?..........

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Fair point, will make sure I fully read a post before commenting :1087:

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Originally Posted by Apollofish

Fair point, will make sure I fully read a post before commenting :1087:

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haha not to worry... Been guilty of that more than once lmao

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Originally Posted by great southern camping

really c.................?? Lol


scotty (bigrig)

great southern camping
www.gscoffroad.com.au

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really!!!!!!!!