excessive tire wear

[MadMike6786]

so i was washing my truck to day and i look at the tread on my front tires and i said wTf?! my rear tires are fine but the front to suck. the tires are pretty much brand new with about 15000 miles on them. the inside of the tires are really worn down on both fronts. never noticed any excessive wear on the tires up until now. i have the tires set at about 40 psi. whats up with this? should i get a front end allignment? or is something else wrong. i have 33" mud tires on 16" rims with a 4"lift

 

[Blee1099]

You need to get an alignment. More than likely you have negative camber.

 

[IZwack]

40 PSI is HIGH! Yeah I'd get the alignment.

 

[MadMike6786]

yea thats what i figured. do u think 35psi would be good for my set up cuz i do not like the 30psi i am sopposed to have it at i feel liek the truck slides around alot

 

[IZwack]

35psi sounds a little better.. typically I think most ppl run the rear at a lower PSI than the front. Is it wearing on the side or the middle of the tread? If its the inside/outside, then its definitely the camber issue that BLEE suggested. If its in the middle, then its cauz of the high PSI. But 40 PSI is definitely on the high side so you probably want to lower that a bit. The "sliding around a lot" feeling is perhaps because of the larger tires. In general, larger tires means larger side walls which means more roll. You could get stiffer anti-sway bars - there's an option.

 

[MadMike6786]

it slid around alot with my stock tires at 30psi. its wearing on the inside of the tire

 

[IZwack]

wearing down on the inside eh.. probably a camber issue then (as Blee1099 suggested).. you're tires probably look like this if you looked at the front of your vehicle : / \

As for the sliding around, yes Mud terrain (and other off road tires) do slide around easier as you make tight turns. In racing terms, this is called "pushing" and causes understeer. In addition, because the front tires are sliding as the vehicle is "pushing", it does wear down the front tires more. Besides getting tires that are more suitable for street, the best solution would be to take the turns slower. If you've ever gone inside a parking garage that has had its floors entirely painted over (paint or epoxy - sometimes they make it look like its concrete but it does have a coating on top) and made a tight turn, you can hear the "push" as a squeel as the tires slide.

 

[MadMike6786]

thanks alot guyz im hitting up STS tomrrow

 

[gijoecam]

Wear on the inside edge could be a camber issue or a toe issue, or bad wheel bearings. Any halfway competent shop should be able to pin down the issue in about 20 minutes.

-Joe

 

[aldive]

I do not think tire pressure is an issue; I also run 40 psig in a 4.

I too would get an alignment as others have suggested. Further, I would also get the the tires ballanced.

Good luck .....

 

[cfd911]

wearing down on the inside eh.. probably a camber issue then (as Blee1099 suggested).. you're tires probably look like this if you looked at the front of your vehicle : / \

As for the sliding around, yes Mud terrain (and other off road tires) do slide around easier as you make tight turns. In racing terms, this is called "pushing" and causes understeer. In addition, because the front tires are sliding as the vehicle is "pushing", it does wear down the front tires more. Besides getting tires that are more suitable for street, the best solution would be to take the turns slower. If you've ever gone inside a parking garage that has had its floors entirely painted over (paint or epoxy - sometimes they make it look like its concrete but it does have a coating on top) and made a tight turn, you can hear the "push" as a squeel as the tires slide.

well honestly you probably need an alignment but realistically YOU NEED TO FOLLOW THE MANUFACTURER SPECS ON MAX TIRE PSI!!! more then likely you have passenger tires which are usually 35 psi MAX!!! light truck tires can go as high as 80 psi !!! but the easiest thing to do is if you like a firm ride put the max psi indicated on the tire, tire psi goes up as the tire heats up so if your starting at 40 psi cold you ve already over inflated the max pressure you can damage the tire belts and worst of all injure your yourself with a blow out!!! so be smart the max psi is put on the tire for a reason!!!

 

[MadMike6786]

the stock size feels flat and is pretty bootleg i feel like i am wearing out the tires. i like the 40psi. the max is 75 on these. i usually keep it below 40 around 37 - 39 if u wana get technical haha. i have talked to a few people who use a higher psi. just throwing my 2 cents out there

 

[exploded99]

Also, have your front ride height checked. If your front end is dropping (torsion bars weak, torsion bar adjusting screws backing out by themselves) you can have it aligned, but it will just happen again. If you have the alignment checked, and you are showing toe-out instead of toe in this could be your problem.

So if ride height is low, figure out what is causing the suspension problem and fix it b4 the alignment!

 

[MadMike6786]

awesome ill have to check that out to. i went to STS and they wont do it for me since i have a 4" lift and 33" tires such crap. anyone know of anything?