Tires: 315/E Range - Any out there?

[nkiewel]

I would buy a pair of 315/70's with an E rating. I love my BFGs, but wish that I didn't have to sacrifice my load carrying to run them.

 

[nkiewel]

Marek

I've seen many D rated 315s that only take 50psi max cold and are still squatty looking etc. etc.

THANKS!

My BFGs look squatty... Interesting I have a story about that too. I took my truck to a dealer to get a tire plugged and when I came back to pick it up, the tires looked especially *perky*. I asked if they filled them all the way to 50 PSI and he said, "No, we filled them to 70 because that's what the door says. " I thought, "Great, they can read doors, but not sidewalls. " Of course I laughed a bit before pulling it out of the shop and immediately dropping the extra 20 PSI from each tire.

 

[jpickens]

HAHAHAHA! I've had that happen with the 295/75 bfg ATs i'm running right now...

they are D rated and max cold press. is 65 psi

Although it wasn't the 20 psi over you had... just 15 for me

I got home and thought... man that rode stiff...

they put 80 in all 4 !!!

 

[MABurns]

"I plan on going with the 35x12. 50R18 which is a load range E tire I believe. I've e-mailed TOYO, and I'm waiting for their response on the load range. "



This was TOYO's reply:



"Yes it is an E load 10 Ply tire. "

They are not according to their own chart.



35x12. 50R18 123Q (123Q is the key) Notice the others with a 10 ply have the higher load index rating rating and the specify them as 10/E

 

[Spooled-up]

MABurns,



I'm not sure what the 123Q means, but I'm not so sure it has anything to do with the load rating. Could this be a speed rating or something? I remember a thread about the T-rex system where they were talking about using this tire because of it's "E" rating.

 

[Spooled-up]

Just found some info on the Discount Tire website...

Tires can also be listed as:



205/60R-15 93H



93H - 93 Load Index, H Speed Rating



Light Truck (LT) sizes can include a letter at the end of the size.



LT265/75R-16/C



C - Load Range





There are some load range E tires that have a 123 load index rating and some load range D tires that have a 128 load index rating on the Toyo M/T page. Someone correct me if I'm wrong, but doesn't load range just equate to the number of plies in the sidewall and not necessarily the load rating? I was under the impression that the heavier sidewall would be more stable for towing.

 

[jpickens]

I'm preeety sure that 123Q has a BUNCH to do with the load rating... I 'think' the E rating and 10 ply are the standard old way of rating. vs. the 123q deal might include some other variables beyond that including pressure and tests done upon the tire...



"The load range or ply rating branded on a tire's sidewall helps identify its strength and ability to contain air pressure. While specific load ranges are assigned to passenger tires, load ranges are identified in ascending alphabetical order for light truck tires (the further along the letter is in the alphabet, the stronger the tire and the greater amount of air pressure it can withstand and load it can carry). Before load ranges were adopted, ply ratings were used to identify the relative strength of light truck tires with higher numerical values assigned to tires featuring stronger, heavier duty constructions.



Today's load range/ply ratings do not count the actual number of body ply layers found inside the tire, but indicate an equivalent strength based on early bias ply tires. Most radial passenger tires have one or two body plies, and light truck tires, even those with heavy duty ratings (10-, 12- or 14-ply rated), actually have only two or three fabric body plies, or one steel ply. "





Another thing that I notice when researching tires etc. is that as the tire grows larger the pressure needed to withstand a certain load decreases. Many 10ply E rated tires 35" and larger only require 50-65psi max cold pressure and still have a higher load rating than the standard 235/85. R16E or 265/75. R16E 80psi max cold pressure tires we're all used to seeing as standard on 3/4-1 ton trucks.



as far as the 123q - this is the load index and speed rating

i. e. - The first three digits (123Q) represent the tire's load index and are followed by a single letter (123Q) identifying the tire's speed rating.

"The higher the tire's load index number, the greater its load carrying capacity. "





http://www.tirerack.com/tires/tiretech/lighttruck/loadrange.jsp

http://www.tirerack.com/tires/tiretech/general/speed.jsp

http://www.tirerack.com/tires/tiretech/general/size_information.jsp



Hope this helps...

Josh

 

[jpickens]

Marek

I just wanted to thank you for your detailed response on the 315 toyos you purchased - Everything I looked forward to hearing... Sounds like you have quite a ride there with that suspension system!