Outer edge of tire wear

I have a 2020 tundra x series with nitto terra grapplers stock 175/55-20’s. I have noticed excessive wear on the outer edge and this is with 5k tire rotations from the dealership and 2 alignments at 15,000 and 30,000 miles (currently I am right at 30,000 miles).They state that it is because of the tight turning radius of our tundras but don’t know if this is true? Anyone have this issue or is this an issue with the tire? They are perfect on the inside edge and middle but the outer edge looks very rounded. I’m about to get them remounted to save me a few miles before getting new tires. I currently have the air pressure at 38 front and 40 rear. Does this seem odd to anyone else or is this just the nature of this truck? I appreciate the help.

 

It had nothing to do with the turning radius. Are you lifted at all? Aftermarket wheels? Either way I would take it to someone who specializes in alignments.

 

My stock 2013 does exactly the same - assuming you mean it only does it on the front?
Several theories and solutions have been suggested for the cause and correction. I have also heard the tight turning circle theory but unless you spend all day driving round a parking lot in tight circles I think we can probably stick that theory behind several more credible ones.
First and foremost this truck, regardless of model, has a lot of weight up front and, as I've just said, it's a truck. If you drive your truck round corners as though you are in a race car in a heat of the Indy 500 then you will scrub the outside edges.
Theory number two: It has been posited that the Tundra has been set up for towing and the alignment specs reflect that.
Theory number three: Toyota err on the side of underinflated tires.

Solutions:
1) Don't drive like a dick - no hope for me then.
2) Go to someone who knows how to align the Tundra. The lovely folks at Firestone will set you up bang in the middle of the spec range for toe, this is not what you need. The truck needs to be set right on the extremity of the range, someone far more knowledgeable than me will no doubt be along to let us know whether we need to toe in or out, I can never remember which is needed.
3) I did a fair bit of internet searching when my first set died and keyboard warriors agree that 41psi all round is what you need to be running at. Obviously this does not work well for those of us who have to leave the pavement every day, I find it's far easier to let some air out in sticky situations than it is running at factory pressures and regularly opening my wallet for another set and then up it when I'm on the pavement again.

There are a few other culprits out there which can also wreck tires - wrecked suspension parts being the most obvious, more likely on my old junker than on a younger lower mileage model and even then this is a Toyota we're talking about not a Fix Or Repair Daily...

 

So this is utter BS. Unless you are gassing it with the wheel turned all the way over (e.g. when making a u-turn).

As stated above, coming in hot to corners (i.e Interstate off ramps, etc.) will scrub a ton off of the outer edges very quickly. Even more in really hot and sunny weather.

If you had worn suspension parts, I would think these would be noticed during your x2 alignments.

 

You're underinflated at 38psi front. Run them at 44. I'm on my 2nd set of Nitto Terra Grappler G2's. In the first 7k miles when new I got unacceptable edge wear. 44psi ended it.

 

The truck is a 2020 and drives great. I don’t see any worn suspension parts and yes it is completely stock, no lift or leveling kit. I will take it to an independent reputable shop and see what they have to say about a new alignment. I will also increase the PSI to see if that helps any. Thanks for everyone’s input. My friend also has a 2020, purchased almost the same time I got mine. He has the same tires as well that were on the truck. He is having the same issue. He had not heard the tight turning radius excuse but that these tires are really soft? I’m kind of upset with our dealership to be honest. I feel like they don’t want to fix the issue and just keep saying it is normal wear. I also have a very small diesel type sound? Almost like quiet valves or rod bearing that I can hear mostly in the passenger front wheel well but can sometimes hear it when just idling at a stop light. They said this is also normal for this vehicle, but I have heard some other 5.7L 3rd gen. Tundras that do it and others that do not? I guess it’s the nature of the beast.

 

So this sound appears to be a normal finding with no worries about reliability?

 

I mean it is a big heavy truck and it pushes in corners. If you are at all aggressive you will find it wears outside edges.

 

Hi! I have a stock 2018 and am having the very same issue as you. I'm about to buy a third round of tires because of this. Each set is lasting me less than 2 years and don't make it to 20k miles because of they keep going bald on the outer part and this is with alignments every 3 months. I've asked the dealership and the alignment shop and have received various responses on the cause. Some say our streets around here are crappy, others mention the tundra setup itself, and others have no idea why.

I'm going to buy the unlimited alignments at Big brand and just keep taking it in every month because it sucks having to buy tires every 1.5 years.

 

I also have the G2s but mine are 116S with a max PSI of 44. Would you still put them at 44 PSI?

 

Chalk them and run about 1/4-3/8" edge spacing to account for dynamics. If it takes all 44 PSI, then so be it.

 

I use my 08 for work (contractor) and I tow a trailer about 30% of the time. I have Fox suspension not.lift and air bags which makes my truck perform like the Chevy 2500 HD I previously owned. I run lt 285/65/18 notto ridge grappler and git 50k out of them, front tire uneven wear was noticeable.
I just put on the Recon grappler which was on sale and said to be longer mile rated. I don't balk at 50 k.