2015 Tacoma tires cupping

I've never run into this issue on any prior vehicles . I just had the stock tires rebalanced ( only have about 21k on this set . Any other ideas on the most likely cause ? The truck has 71,000 miles on it & doesn't wander at speed ..uggg . I know the wisdom of TW will help

 

Have you been rotating them. It only seems to happen to me when I don’t regularly rotate the tires.

 

I was maybe 5k miles over on rotation this time , & the rebalancing seems to have helped alot . Maybe thats all it was ? Purchased the set at Costco so I'm hoping I didn't get a defective batch .

 

Cupping typically happens when the vehicle is out of alignment, tire pressure is either too low or too high, or from worn suspension. If the alignment is good and the tire pressures are to spec I'd be thinking about suspension. My stock shocks were spent after 100k.

 

Worn Shocks; You get crazy cupping if your shocks are DEAD or worn; When your tire bounces on the road; the shocks control that bounce. If they are dead or weak(worn) the tire keeps bouncing and causes cupping.

 

I just picked up a 2015 and added the truck VIN to my Toyota factory Owners site , you get more information than a car fax .
Found a logged service report from the Toyota dealer it was sold for a replacement of all 4 tires for tire rot and abnormal wear .
That was news to me apparently Toyota did have problems with tires in 2015 and factory replaced mine with Cooper tires , considering this truck I just picked up only has 16k on it and tires were replace in 2017 at 9k on the clock .

 

Sorry to hear about your tires/worries.....in my experience it sounds like under inflated tires. I would suggest doing a chalk test to verify the proper inflation/load/air temperature. You can also confirm (rough guide because ppl change weight of vehicle with armor ect and tire size) with the recommended tire pressure on the drivers side door frame specification guide. See video....

https://www.youtube.com/watch?v=FabWgDAulGg

Good luck....stay safe and work smart!

 

Not all tires are the same...could just be chitty tires. Wouldn't surprise me if Costco was selling crappy chinese tires.

 

I've also heard cupping can also be from cornering hard. I think somewhat it's just the nature of the beast

 

Heading to the dealer Wednesday . I'll make sure to follow up .

 

X2 on the chalk test. It works great on lifted or lowered vehicles.

 

sub'd

 

I bought bridgestone R265 from bjs for my tacoma and since it's a commercial 10 ply, the tire says 80 psi max on the sidewall.
This is the same tire that we use at work on our 1 tons and we run 65 psi and have good luck with wear. Since the tacoma is not a 1 ton, I find that 50 psi give a nice even wear on the commercial grade tire.

*if your wondering why I run rugged tires like this, it's for a number of reasons.
1) I live on a poorly maintained dirt road.
2) I haul my own firewood.
3) I have a magnatrac rs1000 that I haul in the bed

 

I'd check for worn shocks 1st.

Even 50 PSI is more than you need on a Tacoma. Closer to 40 PSI would be all you need with E rated tires on a Tacoma.