"E" rated tires?

You need to use the Tire Inflation Tables for both P rated and LT tires plus the RMA formula and your vehicle placard located on the driver side door post. See "Replacement Tire Selection Manual" (Bridgestone/Firestone) P.13 and the inflation charts at the back of that publication. The other tire manufacturers use the exact same information and inflation data...I just find the B/S-Firestone data easier to use. An example: My '08 regular cab came equipped with P245x75R16 tires, which I replaced with Michelin LT245x75R16E tires. Toyota's door placard showed 29 psi front & rear. Following the formula, the "E" rated tires should be inflated to 41 PSI for the same load as the original "P" tires. So, I run between 40 & 45 PSI. The results? The tires now have 85,000 miles. No irregular tread wear. 5/32 (rear) and 8/32 (front) measured tread remaining. Tread is still sharp and the outside wear is the same as the middle treads. No vibrations and I don't rotate...it took 5 trips to Discount Tire in the city to finally get a decent balance, so I do not rotate. I'm afraid they'd never get the balance right again. Tacomas must be balanced correctly or they vibrate. The chalk test? No, thank you. I inflate like the tire manufacturers all say and the results speak for themselves. I'm going to get over 125,000 out of the front tires. (And this from a vehicle that spends as much time on dirt/mud/gravel as it does on pavement.

 

Other than improper torque or non hubcentric wheels, how does a rotation effect the balance on a wheel @SargeBB

Also, do you understand what the chalk test is and how it works?

 

Will a few of you please comment on your observations of ride quality when you went from the factory P metric that came with your truck, or any P metric for that matter, and then going to a LT tire on you rig. I want some new tires but the one I'm looking at is only available in a LT, E rated I believe.

 

Inflating the tires to the pressures they need as described by the above posters is going to give you a harder ride. You will feel all the bumps more. And if you have a stiffer lifted suspension it will be even more noticeable.

It's not unbearable and some people like it more. Rides more like an older truck before everything, beaides a super duty or heavy duty, rode like a car.

Also they should give you longer life and much more durability off road.

 

I run 35psi all the way around on my e-rated KO2’s, love how it handles.

 

Thanks. Have any had regrets going to a LT tire from the P metric?

 

Not for me. I can see how some people might not like it and I have read of people on here getting rid E rated lt's for C rated. The ride is noticeably stiffer with them. I used to spend every weekend off pavement and one or two nights a week and the added protection of the E's was worth it.

 

That is the kind of feedback I was hoping for. Thanks, its all trade-offs I suppose.

 

I don't think It does. Never heard of that happening

 

this, I got my pizza cutter stock tires at 35psi that's about as far as you can go and still have a tolerable ride IMO

 

It is too early to say for sure. On the ride home from the shop at 55 psi the ride was considerably harsher than before. But right now I'm running 36 psi and the difference so far is very minor and not objectionable. But I've driven less than 100 miles and all around town. I'm waiting to see how they do on rough Forest Service roads and on the open road. If they don't beat me up on rough dirt roads I may go back up to 40ish and see. I had some "E" rated tires on a Wrangler once and they were pretty rough riding on gravel roads.

I certainly don't think a truck this light NEEDS an E rated tire. I've had this truck 10 years and 183,000 miles so far all with "P" series tires and I never felt handicapped. But my BIL was able to get these tires for me at a considerable discount and "E" rated tires were the only option.

 

I've had one E tire pop on me while wheeling. I was way out in nowhere Utah. Glad I had them then. If I had had another tire go the truck would have been stranded and I'd have had a long walk. When I got back to town I got four new tires and made the best old one my spare. They were around 20% tread left.

I do air my tires down for forest service roads. The ride is very rough on rocks that might stick up three inches. Depending on speeds anticipated I'll run 20 to 30 psi and air back up before driving home.

 

My winter tires are Toyo Open Country WLT1 245/75/16. They are E rated. OK tire insisted they be inflated to 55 psi. When I got home I reduced the pressure to 45 psi and they feel better. If my truck was a 1000 or 1500 lbs heavier, 55 psi may have been fine.
E rated tires have very thick and stiff side walls which is not conducive to flexing. Not enough air pressure may allow excessive side wall flex causing damage. That's my take on it.

 

Nitto Ridge Grapplers E Rated.

Best tires I’ve driven so far.

Quiet yet smooth.

35 PSI all around

 

I just put on falken wildpeak load e, 275/70/17, and they're at 36 psi but I'm going to do a chalk test and test it out this weekend.

 

I have 285/70/17 Load E KO2s and love them. I run them at 40psi, front and back. Pretty damn quiet, nice smooth ride, no complaints. That being said, 45psi and up, things do start to get obnoxious (dealer decided they needed to be put at 50psi last time... wish I could have punched the guy who decided to do that). I have zero need to ever inflate them above 40 though, so for me, they're great.

 

I’m running 265/70/17 KO2 Load E tires with the TRD Pro Sema rims. I think my psi is at 50. I will try 40 psi.

 

I posted this a long time ago, but it may help.....

https://www.tacomaworld.com/threads...between-psi-load-lt265-and-lt255-data.311659/

 

ST Maxx (load E) with about 22,000 miles on it, always run at 35 PSI on pavement. E is overkill for our trucks but it's all they offer this tire in so I went with it, 10/10 amazing tire if you daily drive and also air down for rocks and other moderate wheeling.

 

My tires were at 50 psi so I dropped them to 40 psi and will see how that works.