Toyo AT II's Wearing in the Center

[Weststsh]

Hey whats up! I am looking to get schooled, searching the web and can't find the answers looking for. Story goes purchased these 35x17x12.50 Toyo at II's <- the new version, back in November 2012 so almost had them for 9 months and have put roughly 15 000 kms or 9300 miles and running tire pressures of 40 psi up front and 40 psi rear; i know i should be running tire pressure higher in the front, have rotated every 5000 km's or 3100 miles, have done three tire rotations so far. So the bad part the center is wearing faster than the outer edges and i am a complete dummy when it comes to this shit, anybody have any suggestions to aid me in wearing these tires evenly.

My driving style is aggressive on the forestry roads up to 60-100 km or 40-60 miles, in town and hi-way i drive like a 60 year old man so conservative, gentle off the line and relaxed driving style. Truck is 2007 reg cab PW really light on the ass end. All Stock Suspension except for t-style steering! Had tires re-balanced 3000 kms ago.

Oh yeah, Awesome forum

Thanks West

[Pit Slave]

I got a 2005 PW reg cab and run lower pressure than that. Unloaded I run about 32 psi in the rear and 36~38 in the front. I have General Grabbers in 35 inch E rated on the factory PW wheels.

What wheel are you running?

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[azracer]

I have settled in on 40psi front and 32psi rear. I have center wear as well but I did a chalk test and the fronts may still be a bit high. 38psi might be right but I like the feel of 40 on turns a bit better. Do the chalk test and see what you find.

You can also “calculate” your tire pressure with the chalk method. This involves coloring a section of your tire with chalk to see how much tread is making contact with the ground. Start by finding a flat road surface. Concrete is actually the best choice, but you can also do this on asphalt. Make a mark with soft chalk that goes all the way across your tread. Then, gradually drive your truck forward about 50 feet and then backwards 50 feet.

Analyze the chalk on the tire. If the chalk is only worn off on the center of the tire, reduce the tire pressure slightly and go through the process again. With the adjustment, you should see the chalk wear off more broadly. Keep making tiny adjustments in the tire pressure until the chalk wears off evenly and all the way across the tread.

You will have to complete this process for each of your four tires. Once you’ve found the right street pressure, add 10% to all four tires. Then, measure the tires and add pressure to balance them. As explained above, you need to measure from the wheel to the ground. Start by balancing the profiles of the front tires with each other. Then, balance the front tires again with the rear tires. Always adjust the tires with the smaller profiles by adding air.

The advantages and disadvantages of this method are the same as those involved in the second method above. If you go through the process correctly, you end up with the ideal tire pressure. But, this method is tedious and there’s a reasonable chance that you will make a mistake.

http://www.4wheelparts.com/tire-wheel-p ... ecker.aspx

[Cactus Red]

It also depends on weight - at 8000 lbs, I run 45 psi front and 42 rear with the same tire you have. It sounds like you need to reduce pressure.

Sent via gigawatt laser...

[TwinStick]

You can wear the center fast if pressure is too high & can also happen if pressure is too low depending on the tire/carcass & how it's made. I run 50-65 psi, depending on what i am doing. Usually stay right at 60 psi. Rides rough but no tire issues, even with the stock BFG's.

[RustyPW]

Reduce your air pressure. I run between 35 to 40 in the front and 30 to 35 in the rear. That's empty. Now with a full load. 60 front and rear. Pulling a 9,000 lb camper. 45 front and 50 rear.

[Weststsh]

Awesome sounds like the general response is to reduce tire pressure, at the same time ill try the chalk test azracer thanks for the link. Pit Slave Im running the factory wheels, best looking factory truck wheel in my opinion! Catus Red my truck has no tool box or additional added weight. Twinstick tried sixty and road like a dump truck, always would have an urge to piss after going down a rough road, the empty long box floats coming around the corner of a dirt bomb forestry road. Rusty have you had wear in the center with your tires, looks like you and Pit are both RC's, 95% of the time riding empty.

Hey guys really appreciate the feed back, going to reduce the tire pressure at least 5 psi in the rear just to see how it rides and go from there. Let y'all know!

Thanks West

[RustyPW]

Yes I have a RC LB. With the cap and tools in the tool box. My PW weighs in close to 8,000 lbs. I have the 35" Toyo MT's on 9x17 rim.

[FirerescuePW]

I agree with reducing pressure. I run 35 rear/40 front when not hauling or towing. I carry a toolbox and recovery gear, so I think I'm around 7,500. Never weighed it.

The pressure on the sidewall is for maximum load capacity for the tire, so chances are you won't ever need to go that high. Don't be afraid to experiment with lower pressures. I don't like a bone-jarring ride either!

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[Alakablamo]

I agree with everyone above, and I run lower tire pressures most of the time when the truck is unloaded.

Here is the Toyo load inflation manual (attached). It is really good information to know, and it includes the TRA load inflation tables in addition to the Toyo A/T and M/T specific tables. If you know how heavy you are running, it's a good place to start.

[GunniPWguy]

Welcome to the forum. I run all mine (285/70/17 MT Baja ATZ's) at 50 psi, rotate every 5k and they are all wearing even steven so far. Either I am too lazy, don't have the time, or flat out don't care about trying different PSI's to experiment with tire wear. Not a very helpful post I know just wanted to be part of this thread.

[cruz]

I agree with reducing pressure. .... The pressure on the sidewall is for maximum load capacity for the tire, so chances are you won't ever need to go that high. Don't be afraid to experiment with lower pressures. I don't like a bone-jarring ride either!

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X2
When I got my new tires , not Toyo's but Falken E-rated 3 ply , the max. pressure is 85 lbs. . I did the chalk test and now I'm running 38 lbs. front and rear when empty.

[08TwinStickPW]

If your on the stock rims they are too narrow, this was an issue I was reading about over on cummins forum with wider tires.

[fbenross]

I took my truck with pop up camper to the local scales to get weighed. F axel=4190 R axel=4970 total=9160 full fuel and water and me in the cab, 50% of the gear I take camping. If I put my cycle and rack on the back that's 300 lbs more. I run 50 and 55 psi My 33" BFG KM'2s are rated 3195 lbs at 65 psi

[Ducky's Dad]

I run 50-65 psi, depending on what i am doing. Usually stay right at 60 psi.

Same here. Most of the miles on my 2005 are highway miles getting to/from places where I need the PW. I air down when necessary (not often) but then air up again for the highway. I've been running Toyo M/Ts in 35/12.50x17 on stock wheels with no problems. Current set has about 32M on them and plenty more to go. My truck is on the heavy side, with dual batteries, compressor, two tool boxes (usually full), hi-lift, bed liner, shell, light bar, roof rack, etc. I run the higher pressures mostly to improve highway gas mileage, but it still sucks. Tread wear is pretty uniform across the face of all four tires. I rotate them when I feel like it, not as often as I used to.

[Weststsh]

What's up fellas been busy with work given you all an update! Ran front tires around 36-38 psi up front turns like a slug but smooths out the ruts a lot better, and running the rears with 30-32 psi what a difference in ride quality night and day compared with 40 psi. Wear seems to be more uniform now with the stock power wagon wheels with the eye ball method <- (not accurate) but definitely looks like the outer tread is wearing a lot better with the center! So got to give a shout out, thanks guys really appreciate the suggestions.

[verdesardog]

Hey whats up! I am looking to get schooled, searching the web and can't find the answers looking for. Story goes purchased these 35x17x12.50 Toyo at II's <- the new version, back in November 2012 so almost had them for 9 months and have put roughly 15 000 kms or 9300 miles and running tire pressures of 40 psi up front and 40 psi rear; i know i should be running tire pressure higher in the front, have rotated every 5000 km's or 3100 miles, have done three tire rotations so far. So the bad part the center is wearing faster than the outer edges and i am a complete dummy when it comes to this shit, anybody have any suggestions to aid me in wearing these tires evenly.

My driving style is aggressive on the forestry roads up to 60-100 km or 40-60 miles, in town and hi-way i drive like a 60 year old man so conservative, gentle off the line and relaxed driving style. Truck is 2007 reg cab PW really light on the ass end. All Stock Suspension except for t-style steering! Had tires re-balanced 3000 kms ago.

Oh yeah, Awesome forum

Thanks West

they are wearing in the center cause you are airing them up too much, get a pressure/load table for them, get your axles weighed....go from there.


I'm running 35psi in my 315-70/17's on my CTD! (with no load of course, have to air up for a load)