laknox wrote:
sarhvac1 wrote:
I know this is beat to death however I have 225/75r15 tires with a d rating @65psi looking to replace I know every one on here is LT positive however everything I look at in LT doesn't really have a 15" I should say all the ones recommended on here and the ones that do have a higher pressure rating// question is will rim design be able to handle this? also talked to rv dealer where we bought unit and a tire guy both think the new Carlisle USA trail are the way to go?? NEW is what I'm wondering about
I upgraded from the placarded D tires to E tires on my 11,300 GVW FW. I had to make sure that my Al rims were rated to 80 psi, which they are, and are stamped on the back side. That's your first step; check the rating on your rims. You might have to dismount a tire, though, as some are stamped in the valley =inside= the tire. I suspect that Komfort simply used the same Al rims on all their 10k+ trailers. If your rims are steel, I'd bet that they are only 65 psi and you'll have to change to heavier rims to handle E tires. If they're Al, you may be in the same boat as I am. I am going into the 3rd year with my Carlisle RHs and, so far, they're working well. I don't put a lot of miles on them, store the FW on boards and keep the tires covered. They're just starting to show some weather checking.
Lyle
Interesting that you put Es on your trailer! Overkill? This set of numbers reveals what was really going on there and why Ds were already plenty.
(Reading- Trailblazer by Komfort 25FSG)/Komfort 26FS (wts in lbs.)
Unloaded vehicle wt- 7,706/7,706
Tires- Ds/Cs
GAWR- 10,160 (four Ds)/8,600(four Cs)
Dexter 5200s on both for 10,400
GVWR- 11,273/10,015
Pin (unloaded)- 1,113/1,415
Cargo not including water-4,033/1,748
Length-28' 11"/ 28' 6"
Note that the GAWR is four tires worth and the GVWR is GAWR plus pin.
Note the Ds GAWR is close to the 10,400 of the two Dexters so with Es, now the axle is the weak link instead of the tires as fitted, so you can't go to full tire loading anyway with Es. The official GAWR is still the four Ds worth.
So they both weigh the same unloaded but one has Ds and the other has Cs. The pin wts given are apparently when the trailer is unloaded, so they mixed unloaded pin and loaded tire GAWR to get the GVWR which is weird. The 26FS loaded to 9,800 has 1,900 pin (scaled)so the 25FSG would be similar.
In later model years Komfort changed the 26 to Ds and all of a sudden the same trailer had GAWR of 10,160, etc similar to the 25FSG numbers above. Same trailer. So it was ok with Cs but now has Ds.
The Ds gave it more cargo wt and more margin on the tires generally. Lots of margin.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.
