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Thread: Goodyear Wrangler UltraTerrain AT Reply to Thread
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  Topic Review (Newest First)
06-28-2019 01:44 PM
polarisn1
Quote:
Originally Posted by MIkey52 View Post
Well this is the one I use for my trailer tires.

https://www.goodyearrvtires.com/pdfs/rv_inflation.pdf

And found this for LT Tires

https://www.goodyeartrucktires.com/p...dinflation.pdf

And this is a real good one from toyo.

https://www.toyotires.com/media/2125...s_20170203.pdf
I acutally just ran across that toyo tires one yesterday.

I got ahold of someone at Goodyear, and she is sending me over a load chart. They basically look at what the stock tires were, and what the new tires are, and calculate what the new tires should be at max pressure.

She also has a load chart, and she will be emailing that to me today or Monday, she said they were really backed up right now right before the big holiday travel weekend next week.
06-28-2019 01:43 PM
polarisn1
Quote:
Originally Posted by Icutmetl View Post
Are you sure you’re not picking fly crap out of pepper with this whole load curve diagram thing? All the reading, research, etc I’ve done over the years on tires for different vehicles, and this is the first time I’ve even heard of such a thing.
hahahaha That is an awesome visual!

GM wants 80 psi in the rear. But that is a max pressure for max load. I do not carry a max load, therefore I am not running 80 psi in the rear tires. It will ride like shit, and it will prematurely wear out the middle of the tire.

Therefore, I have been doing research on this load inflation thing, and yes, it exists. I have found other tire manufacturers have a chart.
06-28-2019 11:20 AM
MIkey52
Goodyear Wrangler UltraTerrain AT

Well this is the one I use for my trailer tires.

https://www.goodyearrvtires.com/pdfs/rv_inflation.pdf

And found this for LT Tires

https://www.goodyeartrucktires.com/p...dinflation.pdf

And this is a real good one from toyo.

https://www.toyotires.com/media/2125...s_20170203.pdf
06-28-2019 09:33 AM
Icutmetl
Quote:
Originally Posted by polarisn1 View Post
Quote:
Originally Posted by MIkey52 View Post
Or you can do the chalk test to even up the tires. Do it at different weights to form your own charts. The information should be on Goodyear’s site.
Quote:
Originally Posted by MIkey52 View Post
Or you can do the chalk test to even up the tires. Do it at different weights to form your own charts. The information should be on Goodyear’s site.
Thank you for your response.

I have looked on Goodyear's website as well as Discount Tire's website, and there isn't a Load Curve diagram. I have also searched the interwebs with no luck..

I understand that I could go through the work of the chalk test, but it is imprecise and not needed when the tire manufacture should have already done this.

I am hoping @discountTire can provide this..
Are you sure you’re not picking fly crap out of pepper with this whole load curve diagram thing? All the reading, research, etc I’ve done over the years on tires for different vehicles, and this is the first time I’ve even heard of such a thing.
06-23-2019 05:34 PM
polarisn1
Quote:
Originally Posted by MIkey52 View Post
Or you can do the chalk test to even up the tires. Do it at different weights to form your own charts. The information should be on Goodyear’s site.
Quote:
Originally Posted by MIkey52 View Post
Or you can do the chalk test to even up the tires. Do it at different weights to form your own charts. The information should be on Goodyear’s site.
Thank you for your response.

I have looked on Goodyear's website as well as Discount Tire's website, and there isn't a Load Curve diagram. I have also searched the interwebs with no luck..

I understand that I could go through the work of the chalk test, but it is imprecise and not needed when the tire manufacture should have already done this.

I am hoping @discountTire can provide this..
06-23-2019 11:54 AM
MIkey52 Or you can do the chalk test to even up the tires. Do it at different weights to form your own charts. The information should be on Goodyear’s site.
06-23-2019 06:39 AM
polarisn1 Can you share with me the load curve for these tires?
My understanding is that tire manufacturers create a chart that outlines weight vs corresponding psi that should be ran in the tire.
I'm not driving around with 80psi in my rear tires unloaded like GMC puts on the placard, it's not a good idea.
I just bought 285/70R17 in the load range E category. I love them, but want to set tire pressures correctly for long wear, comfort and safety based on Goodyear's testing, not GM's maximums.
Thank you.
04-19-2019 05:27 AM
Discount Tire
Quote:
Originally Posted by ColoradoOutdoors View Post
You are correct on size! Tall and narrow. Maybe these just like more psi than the duratrac for towing. Will try.


Sent from my iPhone using Tapatalk Pro
With 15 years in the industry I'm getting pretty good at calling tire sizes by eye

Your Ultra Terrain tires have a max air capacity of 80 PSI cold - bumping the pressure up to max capacity should make a significant difference with how the tires handle while towing/under load.

On a side note, what is the GVWR of the trailer? 1000 lb tongue weight seems on the high side which may be causing some of the squirm you're experiencing.
04-18-2019 05:09 PM
ColoradoOutdoors You are correct on size! Tall and narrow. Maybe these just like more psi than the duratrac for towing. Will try.


Sent from my iPhone using Tapatalk Pro
04-18-2019 06:44 AM
Discount Tire Hi, ColoradoOutdoors!

I think the pressure may be causing some the the "squirm" that you're describing.

What size UltraTerrain Tires are you running? From your picture I'd say LT275/65R-20?
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