Another Subj . . . TIRES

[ken_burke]

All . . . .A very worn out subject.
I really need your help in buying a new set of 5th wheel tires. We have a heavy (3000 #s per wheel) Cedar Creek. We bought 5 GY Marathon tires within the last year. ST235/80/r16. Pressure of 80 #s. 2 of the 5 tires have blown out within less than a year. Don't want to buy more Marathons.
Questions . . . . Will LT tires work better than ST tires for heavy 5th wheel? Can we use 235/85/16 tires, and would that help carry the load. I see that "Me Again" recommends Michelin XPS tires, and Duval R250 tires. Any other recommended tire for a heavy 5th wheel??
Which tires have a stronger side wall??

thanks . . . . ken and sue.

[Cummins12V98]

ken burke wrote:

Cummins12V98 wrote:

ken burke wrote:

JIMNLIN wrote:
Is that 3000 lbs per tire a estimate or actual scaled weight ?
Rv trailers with slide outs are notorious for weighing several hundred lbs different side to side...plus running in a strong side wind all day long can over load a tire on the down wind side if it doesn't have any reserve capacity. Tire experts say a 15-20 percent reserve capacity is a better idea.

What is the trailers GVWR ?
Does your trailer have 6k or 7k axles ?
Lots of 16" trailer wheels rated for G tires (3750 lb ) at 110 psi. Check your wheels for proper load and pressure rating.

I had the 5th wheel weighed at the FROG event last year. they used a scale on each of the 4 wheels. So the 3000# weight, side to side, is pretty good. The trailer weighs 15000 pounds. Both sides had about the same load.
I have 16 inch wheels, 6 lugs wheels, 6,000 pound axles, trailer GVWR is about 14,000 pounds.
If my wheels could take the extra pressure, I would put on "G" rated tires. However, I like the good record of the Michelin RIBS. It is either the RIBS or G rated tire.

And, how can I check the rating of the 16 inch wheels to see if they can take the higher pressure load??

Get the "G" tires and run them at 85 that will give you 3,170 capacity or at 90 that will give 3,300# per tire. Your rims will be fine!

I did the same with 6 lug steel wheels on my Avion. Went from E's to G's and ran 85 for many thousands of miles snd had perfectly even tread wear.

Good information . . . thanks. The "key" question is . . . . . .how heavy is your 5th wheel? Is it close to 15,000 pounds? I think that I would be okay with E rated tires if my trailer was 1,000 pounds lighter.
So the question is . . . Would the Michelines be better than the G rated tires at 90#s pressure?????
We are full timers, and can't really get rid of extra weight.
Thanks . . . ken

Personally I would get the GY "G" tires and inflate based on actual weight plus 5 PSI per GY recommendations when changing load range.

I have had ZERO issues with the GY E, G, and H sets of tires I have owned, not even a flat.

Spend the money, properly inflate and enjoy the ride.

[JIMNLIN]

So the question is . . . Would the Michelines be better than the G rated tires at 90#s pressure?????
We are full timers, and can't really get rid of extra weight.
Thanks . . . ken

Look at it this way. You say your trailer has a 3000 lb per tire weight which the G tires (3750 lbs) will give a 25% reserve capacity at max psi.
As I or some one mentioned traveling all day in a strong side wind will overload the 3042 lb rated tires on the lee side.....all day long.

With a 3000 lb per tire weight I would use the G load range tire and use at least 100-110 psi. Remember ply shear as the tires slide sideways around corners enters the tire pressure equation also. A 110 psi tire will hold its shape better than a 80 psi tire in this situation.

[ken_burke]

Cummins12V98 wrote:

ken burke wrote:

JIMNLIN wrote:
Is that 3000 lbs per tire a estimate or actual scaled weight ?
Rv trailers with slide outs are notorious for weighing several hundred lbs different side to side...plus running in a strong side wind all day long can over load a tire on the down wind side if it doesn't have any reserve capacity. Tire experts say a 15-20 percent reserve capacity is a better idea.

What is the trailers GVWR ?
Does your trailer have 6k or 7k axles ?
Lots of 16" trailer wheels rated for G tires (3750 lb ) at 110 psi. Check your wheels for proper load and pressure rating.

I had the 5th wheel weighed at the FROG event last year. they used a scale on each of the 4 wheels. So the 3000# weight, side to side, is pretty good. The trailer weighs 15000 pounds. Both sides had about the same load.
I have 16 inch wheels, 6 lugs wheels, 6,000 pound axles, trailer GVWR is about 14,000 pounds.
If my wheels could take the extra pressure, I would put on "G" rated tires. However, I like the good record of the Michelin RIBS. It is either the RIBS or G rated tire.

And, how can I check the rating of the 16 inch wheels to see if they can take the higher pressure load??

Get the "G" tires and run them at 85 that will give you 3,170 capacity or at 90 that will give 3,300# per tire. Your rims will be fine!

I did the same with 6 lug steel wheels on my Avion. Went from E's to G's and ran 85 for many thousands of miles snd had perfectly even tread wear.

Good information . . . thanks. The "key" question is . . . . . .how heavy is your 5th wheel? Is it close to 15,000 pounds? I think that I would be okay with E rated tires if my trailer was 1,000 pounds lighter.
So the question is . . . Would the Michelines be better than the G rated tires at 90#s pressure?????
We are full timers, and can't really get rid of extra weight.
Thanks . . . ken

[avvidclif1]

ken burke wrote:

JIMNLIN wrote:
Is that 3000 lbs per tire a estimate or actual scaled weight ?
Rv trailers with slide outs are notorious for weighing several hundred lbs different side to side...plus running in a strong side wind all day long can over load a tire on the down wind side if it doesn't have any reserve capacity. Tire experts say a 15-20 percent reserve capacity is a better idea.

What is the trailers GVWR ?
Does your trailer have 6k or 7k axles ?
Lots of 16" trailer wheels rated for G tires (3750 lb ) at 110 psi. Check your wheels for proper load and pressure rating.

I had the 5th wheel weighed at the FROG event last year. they used a scale on each of the 4 wheels. So the 3000# weight, side to side, is pretty good. The trailer weighs 15000 pounds. Both sides had about the same load.
I have 16 inch wheels, 6 lugs wheels, 6,000 pound axles, trailer GVWR is about 14,000 pounds.
If my wheels could take the extra pressure, I would put on "G" rated tires. However, I like the good record of the Michelin RIBS. It is either the RIBS or G rated tire.

And, how can I check the rating of the 16 inch wheels to see if they can take the higher pressure load??

Am I reading that correctly that your trailer weighs 15k and the GVWR is 14K????

3k per tire on 6k axles would be pushing it MHO.

[Cummins12V98]

ken burke wrote:

JIMNLIN wrote:
Is that 3000 lbs per tire a estimate or actual scaled weight ?
Rv trailers with slide outs are notorious for weighing several hundred lbs different side to side...plus running in a strong side wind all day long can over load a tire on the down wind side if it doesn't have any reserve capacity. Tire experts say a 15-20 percent reserve capacity is a better idea.

What is the trailers GVWR ?
Does your trailer have 6k or 7k axles ?
Lots of 16" trailer wheels rated for G tires (3750 lb ) at 110 psi. Check your wheels for proper load and pressure rating.

I had the 5th wheel weighed at the FROG event last year. they used a scale on each of the 4 wheels. So the 3000# weight, side to side, is pretty good. The trailer weighs 15000 pounds. Both sides had about the same load.
I have 16 inch wheels, 6 lugs wheels, 6,000 pound axles, trailer GVWR is about 14,000 pounds.
If my wheels could take the extra pressure, I would put on "G" rated tires. However, I like the good record of the Michelin RIBS. It is either the RIBS or G rated tire.

And, how can I check the rating of the 16 inch wheels to see if they can take the higher pressure load??

Get the "G" tires and run them at 85 that will give you 3,170 capacity or at 90 that will give 3,300# per tire. Your rims will be fine!

I did the same with 6 lug steel wheels on my Avion. Went from E's to G's and ran 85 for many thousands of miles snd had perfectly even tread wear.

[Cummins12V98]

fj12ryder wrote:
"G" rated tires are rated to 110 psi, not 120 psi.

True DAT. My GY "H" tires are rated at 125. Nice to have the extra capacity right from the factory!

[fj12ryder]

"G" rated tires are rated to 110 psi, not 120 psi.

[ken_burke]

JIMNLIN wrote:
Is that 3000 lbs per tire a estimate or actual scaled weight ?
Rv trailers with slide outs are notorious for weighing several hundred lbs different side to side...plus running in a strong side wind all day long can over load a tire on the down wind side if it doesn't have any reserve capacity. Tire experts say a 15-20 percent reserve capacity is a better idea.

What is the trailers GVWR ?
Does your trailer have 6k or 7k axles ?
Lots of 16" trailer wheels rated for G tires (3750 lb ) at 110 psi. Check your wheels for proper load and pressure rating.

I had the 5th wheel weighed at the FROG event last year. they used a scale on each of the 4 wheels. So the 3000# weight, side to side, is pretty good. The trailer weighs 15000 pounds. Both sides had about the same load.
I have 16 inch wheels, 6 lugs wheels, 6,000 pound axles, trailer GVWR is about 14,000 pounds.
If my wheels could take the extra pressure, I would put on "G" rated tires. However, I like the good record of the Michelin RIBS. It is either the RIBS or G rated tire.

And, how can I check the rating of the 16 inch wheels to see if they can take the higher pressure load??

[ken_burke]

Ohio_Engineer wrote:

ken burke wrote:

snip
. . .
Thanks, but I don't think that the "G" rated tires will fit on a 16 inch wheel. As for tire ratings, the Marathon's are rated for 3400#s, while our 5th wheel weighs 3000# per tire. I think that the Marathon's are under-rated.

Why would you think a LT235/85R16 LR-G would not fit a 16" rim but an LT235/85R16 LR-E or an LT235/85R16 LR-E would fit a 16" rim?

The "G" rated tire is rated at 120#s pressure. An "E" rated tire runs at 80#s pressure. I don't think that my 16 inch wheels will hold up under 120#s.
I have 16 inch rims, 80 # pressure, 6000# axles.

[familyof3]

Me Again wrote:

familyof3 wrote:
I got the marathons too last year. Already blew one Thursday. I thought they would hold up but I guess I was wrong I will be checking on my rims and see if the will hold up the 110 psi but I doubt that they will knowing my luck. If not I'm going to get the 17.5 tires and rims It's all about the cost Either you upgrade to good tires or pay to keep fixing your skirting and fenders. Lol. But mine is a triple axle so that could be a lot of my problems. Maybe the LT tires will double the life of a ST tire and come out in the long run.

6 LT235/85R16E or LT245/75R16E tires are good for 18252 pounds on the axles, do you have more than that? If not, they why don't you just install Michelin XPS RIBs or Bridgestone Duravis R250s? You stay with 80 inflation tires and current rims. Next tire change would be in 6 to 8 years! Chris

Thanks Chris

I'll check into Michelin XPS RIBs or Bridgestone Duravis R250s tires. I don't believe it's the weight. It's gotta be the three axle and heat. Guess I'll call around and see where I can find me a set of tires. Thanks again Chris

[fj12ryder]

He's probably running 7,000 lb. axles so he needs to have more than the Michelins to stay within the placard guidelines.

[Me_Again]

familyof3 wrote:
I got the marathons too last year. Already blew one Thursday. I thought they would hold up but I guess I was wrong I will be checking on my rims and see if the will hold up the 110 psi but I doubt that they will knowing my luck. If not I'm going to get the 17.5 tires and rims It's all about the cost Either you upgrade to good tires or pay to keep fixing your skirting and fenders. Lol. But mine is a triple axle so that could be a lot of my problems. Maybe the LT tires will double the life of a ST tire and come out in the long run.

6 LT235/85R16E or LT245/75R16E tires are good for 18252 pounds on the axles, do you have more than that? If not, they why don't you just install Michelin XPS RIBs or Bridgestone Duravis R250s? You stay with 80 inflation tires and current rims. Next tire change would be in 6 to 8 years! Chris

[rmalik1]

johndeerefarmer wrote:
Goodyear G614. Made in America

http://www.goodyeartrucktires.com/tires/details.aspx?prodline=160007

X2; my Creek came w/ 614's

[familyof3]

I got the marathons too last year. Already blew one Thursday. I thought they would hold up but I guess I was wrong I will be checking on my rims and see if the will hold up the 110 psi but I doubt that they will knowing my luck. If not I'm going to get the 17.5 tires and rims It's all about the cost Either you upgrade to good tires or pay to keep fixing your skirting and fenders. Lol. But mine is a triple axle so that could be a lot of my problems. Maybe the LT tires will double the life of a ST tire and come out in the long run.