5th Wheel Tire Question

[MattF]

Good day evefryone.

Looking for a solution to tire problems on my 2015 Eagle Premier 43 Ft. with a GVWR of 15900lbs. I've driven the 5th wheel over 11,000 miles, and have experienced 2 blowouts, one taking the fender and some of the siding off the trailer ($2500 in damage). Yes they were running proper PSI (80) and were checked often. I'm done with blowouts and was thinking about changing out the tires from the ST235 80 16 Load Range E it came with, to ST235 85 16 Load Range F tires.

Anyone have any experience with this?

[eldermike]

I suggest you go to G614's and be done with it. The major issue with tires is manufacturers. The OEM tires are junk and IMHO are only a delivery system from factory to first owner. They should be changed in the first week of ownership. They buy junk tires and I understand why. People buy campers on price so the manufacturer is stuck with selling to people that believe all tires are the same and will walk away from a deal over a few hundred dollars.

Your rig is perfect for G614's and they will serve you well.

[MattF]

Thanks for the quick response. The G614s are 85s rather the 80s. Do I need to worry about fit? Do you run them at 110 psi? ANy problems doing that?

Thanks again. Matt

[eldermike]

Originally Posted by MattF

Thanks for the quick response. The G614s are 85s rather the 80s. Do I need to worry about fit? Do you run them at 110 psi? ANy problems doing that?

Thanks again. Matt

Not totally sure but I think my OEM tires were 80's and the 614 did fine. I run mine at 100psi.

[Cosmik Debris]

I've read here a few times that you need to check that your wheels are rated for those higher psi. I know that those tires aren't cheap so worth checking intobthis beforehand.
I swapped out my original blowmax tires after a blowout for Maxxis. Still running the 80 psi and all seems well. Trick is knowing when to replace any trailer tire just before they go boom.

[norty1]

Mine came with Marathons that did a similar performance. I verified my rims would handle 110psi and put G614's on and no more tire worries.

[sailor]

In the best scenario you would weigh your trailer and get the weight on each wheel. You cannot assume the trailer weight is evenly distributed among the wheels and the pin. Our trailer has a weight difference of over 400 pounds among the wheels. I am told this is quite common.
With the individual wheel weights you can use the tire manufacturer's charts to determine the necessary pressure to handle the weight. I am running the G614s at 95 pounds. After over a year I am very happy with this solution to the tire issue.

[eldermike]

Wheels are dynamically loaded when a moving load is pulled down a road on tires sprung under that load. How much does the right side of a camper weigh in a sharp left hand turn?

You need good quality tires at least one and better 2 load ranges higher than your static weight.

My 2 cents

[edatlanta]

As as been said above, check your wheels to make sure they are rated for 110 psi. This will be molded into the wheel usually on the inside of the rim. Just grab a flashlight and crawl under and take a look. If it doesn't say 110 psi, it might have a weight rating which will be greater than the load max of a 80 psi tire. The GW Marathon has a weight rating of 3,420 lbs at 80 psi vs the G614 at 3,750 lbs at 110 psi.

As far as the size goes, the GW Marathon ST235/80-R16E has an outside diameter of 30.7". The GW G614 LT235/85R16 also has an outside diameter of 30.7".

As was said above also, the G614 is a perfect fit.