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Discussion Starter #1
I’m in the market for new tires. Currently I have 295-70r18 Toyo AT2 on method 18x9 wheels.

The new tires I’m interested in are Nitto ridge grapplers. My main question is: The 295/70 is a pretty high load 129q and the “12ply” F rated 35x12.50 is 128q...why does the 12ply have a lower load rating? Am I missing something here?

I tow pretty frequently (15k) so I want to have solid, reliable tires. I have nothing to complain about with the Toyo’s, I’m simply inquiring because I’m confused about the load ratings vs plies I guess. 35x12.50 is what I’m leaning towards.

thank you!
 

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I'm guessing E is @ 80psi
F is @ 65 psi.

If you're towing heavy, you'll want the 80psi. Firmer.
I just went through this. The wider tires are going to be F, 12 ply 65psi.

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Discussion Starter #3
The nitto ridge grapplers are F rated @80psi...that’s why I’m confused.
 

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Cummins Dude
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Here’s a link to the specs on all Nitto’s.

 

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From what I've seen, the newer "F" load rating is just another letter. Load index is what matters.
And yes there are similar size E & F rated tires with similar load ratings. F rated tires aren't automatically better, but maybe it's good marketing??
 
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Discussion Starter #6
So what’s a better towing tire? 295-70r18 E with 129q or the 35x12.50r18 F with a 128Q?
 

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i believe the E is a 10 ply tire and the F is a 12. The F has stiffer sidewalls and will give a rougher ride unloaded.
I think the consensus now is the load index is the go to number for carrying capacity.
I run a 285/75-18 E. 35x11.8-18. 4080 lb capacity.
 

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i believe the E is a 10 ply tire and the F is a 12. The F has stiffer sidewalls and will give a rougher ride unloaded.
I think the consensus now is the load index is the go to number for carrying capacity.
I run a 285/75-18 E. 35x11.8-18. 4080 lb capacity.
The higher the letter, the heavier the rating, period. However this is only valid when comparing the same exact size. A standard tire on my work truck is G rated, however I always spec an H rated tire , they always will give better wear.
 

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So what’s a better towing tire? 295-70r18 E with 129q or the 35x12.50r18 F with a 128Q?
Smaller tire = mo power towing. But not alot of difference between them 2.
 
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As stated e is 10 and f is 12. The load index rate how much weight it can carry. When you get start getting into wider tires (think 11”) they have to go to a f rating to be able to hold the 80psi safely. I’ve seen same size Toyos 35-12.50r20 one f and one e. The e was rated at 65 and f at 80. Not sure why width plays into to the ply rating and pressure but that is what I found out when looking.
 
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