Can someone please tell me what tire size this is?

In reply to jharry3:

As I already said, they still make 7.00-15LT trailer tires, however, they are rather expensive, so if I go with a radial tire, they're diameter is an inch or two smaller.

pjbgravely wrote:

curtis73 wrote: I remember I got a flat in my 31' travel trailer and my spare was toast. I found a shop with a 225/70-15 LT that I figured would be OK as a spare and would get me through for the rest of the trip. I was so wrong. Despite being the same size, it was pathetically not up to the task. It looked like it was half inflated even though it was at its max PSI. Everyone who passed me kept honking the horn and pointing like I was going to die. It made it about 300 miles before exploding into tiny shreds. A cop pulled over to check on me and asked me to make sure I dispose of the old tire and not leave it on the highway. Then I pointed to the carnage and he laughed and said "Ok, forget I said that."

I am confused. Every set of LT tires I have had had a max inflation of 80 PSI. It sounds like you had an LT tire at 40 PSI. The last time I had a tire shop install some used LT tires on my truck they sent me out with the tires at 33 PSI. It felt like I had 4 flats. Personally I am going to put passenger tires on my trailer, but I am not going to haul more than 500 pounds.

80 PSI is E-range only. LT is the light-truck designation, but they could be any range. My current 265/75-16s on my truck are standard range (much to my dismay) and only hold 44 max. My point was that for the same size, trailer tires hold more pressure and therefore more weight. The trailer tires that were on the camper were D-range, 60 psi. The replacement spare LT tire I put on it as a spare was C-range, 44 psi. A good pdf on the topic.

Its fine to use LTs on a trailer, I'm just not sure why anyone would. They're more expensive, won't last as long, and won't take nearly as much weight in case you need it someday.

In reply to curtis73:

Load range C is typically 50 psi, not 44. D is 65, E is 80. 44 is common on P type tires though (not LT).

rslifkin wrote: In reply to curtis73: Load range C is typically 50 psi, not 44. D is 65, E is 80. 44 is common on P type tires though (not LT).

Correct. I may be mis-remembering the max PSI of what I put on the trailer, but it wasn't enough by a long shot. But the truck doesn't have C-range, I have 109T and they are an LT tire. (and they're 245/75-16. I had originally said 265)

Max pressure 44 psi. Load 2271 lbs. I have these exact tires.

And its a real shame, too... I bought this truck used and it had these tires on it brand new with the casting nubs still on it and the blue coating still on the white letters. Great tires. But on an HD F150-7700, it limits my real-world weight handling. I can fill the bed with plywood and the truck handles the weight fine, but the tires get squishy. Same goes for towing an 8000-lb trailer. There isn't enough pressure or sidewall stiffness and things get wobbly. I might sell these and get some D-range to better suit the truck. It originally came with Ds according to the door sticker.

http://www.tires-easy.com/205-75-15/velocity-tires/wr078/tirecode/WR0782057515D

i just put the same thing but in a 14" on my cargo trailer.

i have LT tires on my open car hauler and it's been fine, they have lasted much better than the trailer specific tires the local shop put on. i have e range 10 ply LT tires on my enclosed trailer for the datsun and run them at 80psi. i think it all depends on the tire and situation.

In reply to curtis73:

The ones you linked that you have on the truck now aren't LTs at all. They're P rated. IIRC, when used in place of an LT on a truck, you de-rate them by 10%.

Yup. Just inadequate. Strange how the entire Dynapro line is LT, but this one is clearly branded P.

Anyone want some like-new Dynapros?

curtis73 wrote: 80 PSI is E-range only. LT is the light-truck designation, but they could be any range. My current 265/75-16s on my truck are standard range (much to my dismay) and only hold 44 max. My point was that for the same size, trailer tires hold more pressure and therefore more weight. The trailer tires that were on the camper were D-range, 60 psi. The replacement spare LT tire I put on it as a spare was C-range, 44 psi. A good pdf on the topic. Its fine to use LTs on a trailer, I'm just not sure why anyone would. They're more expensive, won't last as long, and won't take nearly as much weight in case you need it someday.

Thanks for the info, I guess I just lucked out on getting really good used tires. Used tires is the reason you would put truck or car tires on a trailer. There are not many used trailer tires out there but lots of other used tires. I wouldn't put new tires on a trailer that won't go more than 500 miles in a year.