I have the dreaded inner/outer edges tire wear on the dunflops.... Is it crazy to assume it is the tires and just replace with Michelins without any other work done?
I have inflated the Dunflops up to 42psi and it seem to have helped the wear issue. No way to tell if the tires and or inflation were the problem until I buy a new set and drive on em for awhile right??
Have the alignment checked, and run the suggested tire pressure. Overinflation will cause accelerated wear in the center of the tread. Underinflation will cause wear in the outer edges. What do you keep them at normally?
__________________
2004 Marlin Blue Pearl Sequoia SR5 2WD; 60k miles
1991 Isuzu Trooper 2.6L 5spd 4x4; 103k miles
1993 BMW 525i M50TUB25 auto; 286,500 miles
ASE Certified Brakes Technician / Automotive Electrical Specialist
Independent BMW Technician
Have the alignment checked, and run the suggested tire pressure. Overinflation will cause accelerated wear in the center of the tread. Underinflation will cause wear in the outer edges. What do you keep them at normally?
Was running suggested pressure for a long time. I think that may be the source of the tire wear. The max pressure for the Dunflops is 45-50psi. Toyota recomends much lower. But a heavy vehicle like the sequoia surely need more pressure than what Toyota recomends. I recall reading several posts indicating that i am not the only person that has seen this type of tire wear even though we maintain the toyota recomended pressures.
As JBH1989 said, run toyota's recomended tire pressure. The pressure creates the proper tire contact area with the pavement for the specified tire size. You can increase the recomended pressure by a couple psi only for a light vehicle or go a couple psi over the loaded veh psi to reduce roll resistance.
The psi on the side of the tire is the max safe pressure the tire is designed for. The psi will increase as the tire temperature goes up. Excessive pressure will cause belt damage that is not noticable. The hot weather and pavement in Texas could increase a tires cold psi by more then 5 psi before driving on it
Over inflating causes the contact area get smaller, the perimeter lifts and the load is concentrated closer to the center of the contact area and resulting in increase wear. It also results in the contact pattern acting like a wedge in sandy/soft surfaces, pushing the soft/ loose material to the sides as the tire rolls and sinks.
The opposite occurs when the tire is under inflated. The center of the contact area is allowed to lift by the low pressure. The edges of the tire are carrying the veh load, resulting in their early wear. This is the reason deflated tires are used to drive in the sand or other soft surfaces. The edges of the tire holds the sand under the tread and allows the tire to run on the top or hinders it's sinking, an inverted cup.
As JBH1989 said, run toyota's recomended tire pressure. The pressure creates the proper tire contact area with the pavement for the specified tire size. You can increase the recomended pressure by a couple psi only for a light vehicle or go a couple psi over the loaded veh psi to reduce roll resistance.
The psi on the side of the tire is the max safe pressure the tire is designed for. The psi will increase as the tire temperature goes up. Excessive pressure will cause belt damage that is not noticable. The hot weather and pavement in Texas could increase a tires cold psi by more then 5 psi before driving on it
Over inflating causes the contact area get smaller, the perimeter lifts and the load is concentrated closer to the center of the contact area and resulting in increase wear. It also results in the contact pattern acting like a wedge in sandy/soft surfaces, pushing the soft/ loose material to the sides as the tire rolls and sinks.
The opposite occurs when the tire is under inflated. The center of the contact area is allowed to lift by the low pressure. The edges of the tire are carrying the veh load, resulting in their early wear. This is the reason deflated tires are used to drive in the sand or other soft surfaces. The edges of the tire holds the sand under the tread and allows the tire to run on the top or hinders it's sinking, an inverted cup.
The tire is rated to 51 PSI, the car recomends 32psi...big difference.
but it is all based on the load on the tire right?
Tire rated to carry 2337 lbs at 51psi
GVWR of the truck is 6700lbs (3160f, 3900r)
Seems like recomended tire pressure is very low for that combination. But I really have no idea how they add up their numbers. All I know is that I have heavy tire wear on the outside edges of the tire (especially the front). Car drives straight, and does not shake.
I do not want to drop a grand on new rubber to find out there is actually another problem. Help!
Using your numbers
At 51psi, 2337 lbs x 2 tires = 4674 lbs/axle(front or back), both axles = 9348 lbs
Your SUV "GVWR of the truck is 6700lbs (3160f, 3900r)"
At 51psi, you have exceeded the max front axle capacity by 32%,the rear axle by 17%, GVWR by 29%, which reduces the tire contact area.
The side wear problem could have been due to the earlier under inflation or by taking the corners too fast with the tires over inflated, or because something is loose or worn (there was a recall on ball joints, may include 2006).
If you have the orig tires they aren't the greatest, your lucky you didn't have a blow out.
The MAX COLD PSI on the tire is the manufacture's tire design and allows the tire to be used for various applications.
The recommended psi by toyota takes in consideration the vehicle design (curb wt + load, spring capacity and ride) to meet the most contact area and even wear.
Filling the tires with nitrogen, a more stable gas then "air", would allow the psi to be increased a couple psi with little effect to the tire.
I use 35psi max, rotated tire at 6000 miles interval and didn't have any uneven wear.
Using your numbers
At 51psi, 2337 lbs x 2 tires = 4674 lbs/axle(front or back), both axles = 9348 lbs
Your SUV "GVWR of the truck is 6700lbs (3160f, 3900r)"
At 51psi, you have exceeded the max front axle capacity by 32%,the rear axle by 17%, GVWR by 29%, which reduces the tire contact area.
The side wear problem could have been due to the earlier under inflation or by taking the corners too fast with the tires over inflated, or because something is loose or worn (there was a recall on ball joints, may include 2006).
If you have the orig tires they aren't the greatest, your lucky you didn't have a blow out.
The MAX COLD PSI on the tire is the manufacture's tire design and allows the tire to be used for various applications.
The recommended psi by toyota takes in consideration the vehicle design (curb wt + load, spring capacity and ride) to meet the most contact area and even wear.
Filling the tires with nitrogen, a more stable gas then "air", would allow the psi to be increased a couple psi with little effect to the tire.
I use 35psi max, rotated tire at 6000 miles interval and didn't have any uneven wear.
Thanks Andy..Yes they are crappy tires. I have always ended up with Michelins on my three other Toyota SUVs, and have never been let down. I have a set on my AMG E55 that are not too worn, but are gettting loud and are hard to ballance out. I guess I will go get the alignment checked and throw on a new set to see what happens.
Just because it drives straight doesn't mean the alignment is good. There are some specs a Hunter tech posted on here, have it aligned to those. I've got a ton of outside wear on my front tires too.
__________________
2004 Marlin Blue Pearl Sequoia SR5 2WD; 60k miles
1991 Isuzu Trooper 2.6L 5spd 4x4; 103k miles
1993 BMW 525i M50TUB25 auto; 286,500 miles
ASE Certified Brakes Technician / Automotive Electrical Specialist
Independent BMW Technician
Dunlops are CRAP...
Get rid of them.
Check your alignment for peace of mind and get a better tire.
Every Seq. I have seen with the "Junklops" have bad inner outer wear.
Here are DJ's specs for a 2wd Drive Seq.
Sequoia
Dunlops are CRAP...
Get rid of them.
Check your alignment for peace of mind and get a better tire.
Every Seq. I have seen with the "Junklops" have bad inner outer wear.
Here are DJ's specs for a 2wd Drive Seq.
Sequoia
YES... The 4wd drives are different according our in-house expert TS user DJ.
I got the specs from his posts.
Very valuable information too...
Here is what I found from the Search
Sequoia
camber: +0.25 degrees
caster: +2.75 degrees (4WD) or +3.00 degrees (2WD)
total toe: +0.08 degrees
Hope it helps
Thanks for the info. How do you like your headers? Someday when I am bored, I will look into the restrictive exhaust issue on this thing. I can hear the restriction under hard acceleration.
Well , I bit the bullet and put some Michelin LTX M/S (had to go up one size to get them 265/70/17) and had the thing aligned at a local shop. Turns our the only item that was out of spec was the toe. The thing should have been pulling to the left from what I see on the specsheet results (it was not). Hopefully that was the culprit of my tire wear.
Need need tires...but...
Linear Mode
