Load rating "E" tires, gots a problem Kuhmo SAT KL61

bju96

New member
Ok so I got new tires last week (decided to try the new-ish Kumho SAT KL61) in 265/75/16 for my 96 T4R and I noticed after they'd installed the tires and put the wheels on the truck they were the E rated not the C. I can tell after driving the truck maybe 25 miles over the past couple days that the ride of the E is going to be way too harsh.

I had several conversations over a few days with the local tire shop during the course of the order. On the first day we spoke (Wednesday), I was on the tirerack website while I was speaking to the guy on the phone, saw the tire came in both C and E, and I told him I thought the C rated would be right for my truck. At the end of the conversation that day I said I'd decide by Friday whether to order or not. Friday rolls around and I decide to take the weekend to think about it more, and tell him I'd call for sure on Monday. I call him Monday morning, 5 days after our first conversation, and tell him to place the order, reiterating the size I want, but not the specific load rating.

So, since I have driven on the tires a few days, less than 25 miles total, is there any chance the shop admits their mistake and takes these back? I told him specifically what I wanted (brand & size), and mentioned the load rating I thought would be best, but in the end got the wrong ones. I grant that maybe I should have reiterated the load rating I wanted too, but I had told them that already and shouldn't they know that an E rated tire on this truck is going to be way too stiff? These are good people. People I want to maintain a relationship with. Been in business in my town for over 50 years.

Going to call them Monday morning but wanted to get a few opinions here first before going in with guns blasting.
 
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These are good people. People I want to maintain a relationship with. Been in business in my town for over 50 years.

Going to call them Monday morning but wanted to get a few opinions here first before going in with guns blasting.

I think that they should fix the problem for free. You can compromise with them (if they get defensive) that you will pay for the LABOR for the first install. That would be the most that i would do.

As for them "knowing," that is a tough one. Many people on this forum have installed Load Range E on their truck...so, it is not automatic that LR E is too much for our trucks.
 
I think that they should fix the problem for free. You can compromise with them (if they get defensive) that you will pay for the LABOR for the first install. That would be the most that i would do.

As for them "knowing," that is a tough one. Many people on this forum have installed Load Range E on their truck...so, it is not automatic that LR E is too much for our trucks.

If your not towing "E Rated" tires are not needed and are rough riding. That's just the way it is. If they didn't discuss this with you, I would make it THEIR PROBLEM!
 
What are they inflated to?

Grabs digital gauge and runs out to truck...55psi...:eek:...that can't be right, can it? I kept my old B'Stone Duellers in the low to mid 30s, which seemed to be the sweet spot for them...I just dropped these by 10psi and will see tomorrow how that changes things.

Not to completely flaunt my automotive knowledge shortcomings, but is there a reason the tire shop inflated them so high? There are no markings on the sidewall indicating the proper inflation range. The max I have ever inflated the low profile 17" on my MINI is ~38lbs.
 
Grabs digital gauge and runs out to truck...55psi...:eek:...that can't be right, can it? I kept my old B'Stone Duellers in the low to mid 30s, which seemed to be the sweet spot for them...I just dropped these by 10psi and will see tomorrow how that changes things.

Not to completely flaunt my automotive knowledge shortcomings, but is there a reason the tire shop inflated them so high? There are no markings on the sidewall indicating the proper inflation range. The max I have ever inflated the low profile 17" on my MINI is ~38lbs.

Yeah, it's because they are idiots..... Come on down to a normal pressure and I bet you will like your tires again.
 
Yeah, it's because they are idiots..... Come on down to a normal pressure and I bet you will like your tires again.

not true, E rated tires require higher pressure. running E rated tires at 32 psi will lead to overheating and tire damage.
 
not true, E rated tires require higher pressure. running E rated tires at 32 psi will lead to overheating and tire damage.

It has a higher max pressure for sure.....show me where it says the minimum psi required.

I'm not saying a low tire won't create heat and possible failure, but his truck doesn't weigh enough to blow one out at 30 psi...........tire wear may suffer all around though.
 
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not true, E rated tires require higher pressure. running E rated tires at 32 psi will lead to overheating and tire damage.

:iagree: Try the low 40's, 42-44psi. That should be enough to be safe and improve the ride dramatically.
 
bju96, if you have a chance could you post a pic with the kumho's on? I've seen them discussed here and I've done some research on them but haven't seen anyone running them yet.

Hope it works out for you man.
 
Well, that was easy. New tires going on on Wednesday. No arm twisting required.

Slvr RnR I will get you some pics soon, and a ride report after this weekend's drive to Tahoe and back.
 
Well, that was easy. New tires going on on Wednesday. No arm twisting required.

Slvr RnR I will get you some pics soon, and a ride report after this weekend's drive to Tahoe and back.

:bigok:How refreshing! Happy to hear they did the right thing:D


Those 'C' tires should be run a little higher than 'P' tires. High 30's-low 40's is probably close... They'll still drive much better than the 'E' tires.

:cheers:
 
So, Chris, if my OEM tire is P265/60/18 and factory recommends 32 psi front and rear, then what pressure should i have my BFG AT KO LT-D 265/75/16??

I'd guess the right pressure is, in theory, 45-47. I'd have to open up the Toyo .PDF and then get the load capacity and pressure of both tires and hit with a calculator.


The screwed up thing is nobody seems to know. The FJC TT comes with BFG's and by all logic/math underinflates them. I can't believe the lawyers would let that happen.


On the other hand here and at T120 there's several stories of trashed D and E tires from underinflation. IIRC, for some reason, the BFG's seem less affected by underinflation than others. I have personally been around, seen, experienced E tires crapping out from being run at 35psi on an F150.


There's a guy who's commented they run high 40's for road trips, mid 30's for day-to-day (short, no highway, commute).

:cheers:
 
Ooopppsss...i have been running 35 psi. Damn, going up on psi won't make my kidneys any happier! :(
 
...if my OEM tire is P265/60/18 and factory recommends 32 psi front and rear, then what pressure should i have my BFG AT KO LT-D 265/75/16??

To match the OE load reserve you need 37psi. LTs are more high maintenance than Ps so that's not the end of the story but it's a good start.

Thanks to Chris's original thread about switching from P to LT I went on a mega-search journey and have some things to say on the subject but I've been too lazy to post my reply in his thread. I'll do that soon, though.
 
To match the OE load reserve you need 37psi. LTs are more high maintenance than Ps so that's not the end of the story but it's a good start.

Thanks to Chris's original thread about switching from P to LT I went on a mega-search journey and have some things to say on the subject but I've been too lazy to post my reply in his thread. I'll do that soon, though.

Thanks JB...well, gotta pull out my compressor to fill those tires.
 

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