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Old 11-05-2022, 02:29 PM #76
N2TRKYS N2TRKYS is offline
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Quote:
Originally Posted by hoppyjr View Post
Very true, I was doing that back in the early 80s and itís a great way to determine if youíre going to get uneven wear. Unfortunately, it doesnít have anything to do with load index.
Did you not find that the test put you close to if not at the top of the psi rating?
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Old 11-05-2022, 03:05 PM #77
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LT tire pressures

The info I posted was for LT265/70R17 E-rated. I don't see a listing for C-rated.

I'm not able to upload the PDF, but it's here:
https://www.toyotires.com/media/pxcj...s_20200723.pdf

Also, there's a good discussion of load ratings here:
Discount Tire | Tires and Wheels for Sale | Online & In-Person

I don't see a distinction between C-rated and E-rated for inflation recommendations; it seems that it's just a matter of the maximum inflated pressure, which then dictates the maximum load.

I note that when I plug a 2021 ORP into the Discount Tire site, it offers the C1- and E1-rated KO2s but not a C2. There may not be a KO2 C2 in that size, of course.

This all sounds to me like C-rated and E-rated should be inflated to the same pressure for the same load weight, and that we shouldn't be using C2-rated tires on 4Runners as there's no way to adequately inflate them.

Harshness: try riding on run-flats sometime. Stiff *and* noisy. E-rated Falken A/T3Ws at 40psi are almost silent by comparison.
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Old 11-06-2022, 06:57 AM #78
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Quote:
Originally Posted by scfw0x0f View Post

...I don't see a distinction between C-rated and E-rated for inflation recommendations; it seems that it's just a matter of the maximum inflated pressure, which then dictates the maximum load...
That's how I understand it.
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2019 TRD ORP. BFG KM3 285/70R17. Hefty front tube bumper, LFD dual swing-out rear bumper. Warn Zeon 10S. RSG sliders. Sherpa roofrack. Goose Gear interior. Radflo 2.5 suspension.
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Old 11-07-2022, 01:58 AM #79
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Quote:
Originally Posted by scfw0x0f View Post

This all sounds to me like C-rated and E-rated should be inflated to the same pressure for the same load weight, and that we shouldn't be using C2-rated tires on 4Runners as there's no way to adequately inflate them.
DOT standard load inflation table is shared across all LT tires at the same size, no matter range C or D or E or F. Load inflation tables for D E F just extend cold inflation pressure above 50psi.
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Old 11-09-2022, 03:20 PM #80
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Quote:
Originally Posted by stevelikesrhino View Post
DOT standard load inflation table is shared across all LT tires at the same size, no matter range C or D or E or F. Load inflation tables for D E F just extend cold inflation pressure above 50psi.
Thanks for detailing that!
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Old 11-10-2022, 09:53 AM #81
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Quote:
Originally Posted by Lexington View Post
Yes I’m aware of this. My question was about identifying which tires you have.
I was just sharing the link to a well laid out thread relevant to the topic. Not replying to you or making a statement.
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Old 11-11-2022, 10:07 AM #82
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FYI, just spoke with BFG and recommended pressure for KO2 LT285/70/R17 is 40 psi

Posting because a quick scan of this thread seemed to be focused around 265. (I'm too lazy to analyze every post and BFG was quick to answer)
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