Generally tires of a given size and load range will have the same load rating. Changing the size of the tire has a huge impact on the carrying capacity even if it is the same ply rating.
Just to make an extreme comparison, an 11R22.5 truck tire in load range H can carry 6610 lbs at 120 psi.
Last week I unloaded a grain cart at work that was wearing 1250/45-32 tires. The same 16 ply rating as the above truck tire, but rated load is 16100 lbs at 35 psi.
The same ply rating and hence load range, but very different load capacities and handling characteristics.
I think that the morale of the story is that we all need to read the side-wall Lb and psi of a tire prior to placing it on our trucks.
In the past this has not been as important to me as it is now. We will drive the AL-CAN in the next few years, and possibly with a boat in tow. With the Camper and the boat, I will want to have everything in order and set-up for that trip. These 19.5's I'm getting are the first step. Then a super-hitch and super-truss. Boy... Campers can get expensive.. But I knew that when I started out. I just like my truck too much, and I really like how the Avion is coming together, so I think we'll have this set-up for a long time.
Garry in Kodiak
Garry K
Wife + 4 kids
Retired Military Family.... Alway's on the move....
2002 F350 CCSB 5.4 6spd 4x4 in AK
1966 Avion C-10 Truck Camper
Interesting to note though that the D rated version of tires like the Nitto Terra Grapplers are providing a much shorter tread life than the E rated version of the same tire when they are used for heavy hauling or towing. I expect that in part the "softer" tire is flexing more and there is more scrubbing action that is wearing down the tire faster as a result.
I find it hard to equate a "10 ply rated" tire with one that truly has 10 ply construction. I would not expect the former to handle sidewall impacts nearly as well.
wintersun wrote: Interesting to note though that the D rated version of tires like the Nitto Terra Grapplers are providing a much shorter tread life than the E rated version of the same tire when they are used for heavy hauling or towing. I expect that in part the "softer" tire is flexing more and there is more scrubbing action that is wearing down the tire faster as a result.
I find it hard to equate a "10 ply rated" tire with one that truly has 10 ply construction. I would not expect the former to handle sidewall impacts nearly as well.
I believe you there. My brother needed a set of tires for his suburban. I found a near new set of Toyo AT's from a Tahoe. They were stock 245-75-16's. After we mounted them up on the burb, we noticed they were load range "C". It was a K2500 burb. Fortunately they only use it to haul the family. No towing duty. But they have been on their only 4 years, and here on the island not many miles, and they are about 25%. While my dads K1500 gets as many miles with the same 245-75-16's in a BFG AT, but Load range "E" and they still look new. Granted the burb also has an AWD mode in the winter which tends to scrub front tires harder. But the K1500 PU is in 4x4 alot too. But I think you are right on about "C"'s or "D"'s being softer than "E"'s.
Thanks for all the confirmations to what I thought.
To Garry in Kodiak, you are correct you will be safe.
On my 2011 Chevy 3500 SRW that had 265x70x18" "E" rated at 3525 lbs. When I decided to add the Rickson 19.5 tires and rims to my truck to be safer, I was only allow to get 225's. Anything bigger would not fit on my front end without rubbing.
Therefore, I suggest you check to see if those 265's are going to fit.
Bigfootchevy wrote: To Garry in Kodiak, you are correct you will be safe.
On my 2011 Chevy 3500 SRW that had 265x70x18" "E" rated at 3525 lbs. When I decided to add the Rickson 19.5 tires and rims to my truck to be safer, I was only allow to get 225's. Anything bigger would not fit on my front end without rubbing.
Therefore, I suggest you check to see if those 265's are going to fit.
Paul
Thanks Paul,
My summer tires and rims are the 35x12.50x16.5 that are a true 35" tall and 12.5 wide. The 265 19.5's are 34" tall and 10.5 wide, so unless the wheel offset is real different, all should be good. The temporary 245-75-16's look sooooo tiny on the truck after having the 35's on the truck
But the tires were free, and they can be dismounted after the 19.5's are on, and the aluminum wheels are light and easy to store till we come home. THanks again,
Garry in Kodiak
2002 Chevy 3500 DRW 8.1L/Allison
2000 Palomino B1500
...and the reason why I need a DRW to haul a Palomino:
2004 United 7x14 tandem axle enclosed toy trailer
2011 PJ 8x20 7-ton deckover equipment trailer
Offline
But I knew that when I started out. I just like my truck too much, and I really like how the Avion is coming together, so I think we'll have this set-up for a long time.
