5th wheel tires

[JIMNLIN]

Good grief...for your 14k gvwr trailer you don't need a load G tire of any brand.
Those Sailuns S637 ST 235/80-16 G are load rated up to 4080 lbs.....or the ST235/85-16 G at 4400 lbs per tire. These tires are better suited for heavier trailer with 7k-8k axles. Never derate a Load G to 80 psi on a trailer.

Moving up to 16" trailer wheels would be a great move for a trailer with that much weight on each tire.

On all my service trailers (and my current 11400 lb 5th wheel rv trailer) that come with 15" tires I upgrade wheels to 16" trailer wheels and go with a quality LT235/85-16 at 3042 lbs capacity. Four gives the trailer 12168 lbs capacity .
When you make a living on the road pulling trailers we learn quick which brands/type of tire gives us 55k-65k miles of trouble free service....and which brands/types don't.
I use etrailer.com or my area equipment trailer mfg for wheels.
The Bridgestone R-238 or the higher priced Michelin XPS Ribs in a LT235/85-16 E are both a commercial grade all steel ply carcass tires. Some haulers can run them 70k-75k miles before they have them recapped.

[Old-Biscuit]

Originally Posted by JIMNLIN

Good grief...for your 14k gvwr trailer you don't need a load G tire of any brand.
Those Sailuns S637 ST 235/80-16 G are load rated up to 4080 lbs.....or the ST235/85-16 G at 4400 lbs per tire. These tires are better suited for heavier trailer with 7k-8k axles. Never derate a Load G to 80 psi on a trailer.

Moving up to 16" trailer wheels would be a great move for a trailer with that much weight on each tire.

On all my service trailers (and my current 11400 lb 5th wheel rv trailer) that come with 15" tires I upgrade wheels to 16" trailer wheels and go with a quality LT235/85-16 at 3042 lbs capacity. Four gives the trailer 12168 lbs capacity .
When you make a living on the road pulling trailers we learn quick which brands/type of tire gives us 55k-65k miles of trouble free service....and which brands/types don't.
I use etrailer.com or my area equipment trailer mfg for wheels.
The Bridgestone R-238 or the higher priced Michelin XPS Ribs in a LT235/85-16 E are both a commercial grade all steel ply carcass tires. Some haulers can run them 70k-75k miles before they have them recapped.

My 14K GVWR 5vr came stock with 16" GY 614 'G' Tires
110 psi/3750#
11K on axles tires....100 psi/3550# and they worn evenly w/o issues
Reason folks go to Sailun in 16" 'G' Rating is the PRICE
GY...$340/ea
Sailun...$170/ea

And they have proven to be a good tire for 14K 5vrs

[Dennisok]

3rd year on Saliun tires. They rock. Low price, great wear, what more can you ask for?

[Massanutten]

Thanks I hope to go to Mississippi in Dec and upgrade Axels, 16 inch tires Goodyear then Alaska next summer . Vanleigh responded it was Lippert question as to the change in tire size and how would affect the warranty . They said it was sized correctly for the load as stated . Seems like they are on the fine line for weight and I always like to have room for extra weight for those bumps and things the DW likes to buy along the way.
Thanks for all the suggestions and comments . I am sure which road I will take.

[Garyp4951]

If you just have 4 leafs in your springs I would upgrade them also to a 6 leaf 3000# spring.
I have the 305 Pinecrest and planning to go to 16" tires also when mine are due. I think Vanleigh made a mistake like some other manufacturers did by not providing enough margin in the suspension, and tire carrying capacity.

[FastEagle]

Originally Posted by Massanutten

Thanks I hope to go to Mississippi in Dec and upgrade Axels, 16 inch tires Goodyear then Alaska next summer . Vanleigh responded it was Lippert question as to the change in tire size and how would affect the warranty . They said it was sized correctly for the load as stated . Seems like they are on the fine line for weight and I always like to have room for extra weight for those bumps and things the DW likes to buy along the way.
Thanks for all the suggestions and comments . I am sure which road I will take.

I'm surprised you haven't posted the information from the trailer's certification label. The official axle load is on the certification label. There are zero ST225/75R15 LRE tires that will support certified 6000# GAWRs. However, in the current ST tire market that tire is provided with a LRF & LRG. The following provided has them in their all-steel line-up.

Our Brands / Transeagle ST-TRANSAMERICA TIRE CO.,LTD

[Garyp4951]

Nice, a 15" F & G rated tire.

[Dennisok]

3rd camping year on my Sailun's. Great tire at any price.

[Edd505]

Originally Posted by JIMNLIN

Good grief...for your 14k gvwr trailer you don't need a load G tire of any brand.
Those Sailuns S637 ST 235/80-16 G are load rated up to 4080 lbs.....or the ST235/85-16 G at 4400 lbs per tire. These tires are better suited for heavier trailer with 7k-8k axles. Never derate a Load G to 80 psi on a trailer.

Moving up to 16" trailer wheels would be a great move for a trailer with that much weight on each tire.

On all my service trailers (and my current 11400 lb 5th wheel rv trailer) that come with 15" tires I upgrade wheels to 16" trailer wheels and go with a quality LT235/85-16 at 3042 lbs capacity. Four gives the trailer 12168 lbs capacity .
When you make a living on the road pulling trailers we learn quick which brands/type of tire gives us 55k-65k miles of trouble free service....and which brands/types don't.
I use etrailer.com or my area equipment trailer mfg for wheels.
The Bridgestone R-238 or the higher priced Michelin XPS Ribs in a LT235/85-16 E are both a commercial grade all steel ply carcass tires. Some haulers can run them 70k-75k miles before they have them recapped.

I sure hate to disagree but with 12,168 tire load capacity on a 11,400 lb 5W leaves you 768lbs of load in the 5W. Fill the fridge & minimum water in the fresh tank so you can flush & wash on the road, lawn chairs a generator etc your at gross. I'm pretty aware of loads & weights with 750K in my class 8 in all of the lower 48 states.

I run the same Sailun S637 on my 14K 5W with 8K axles at 100PSI. I had always run LT tires on my trailers but the reviews on the Sailuns got me to try them, so far they have been good bot I'll know more in a couple ears after a couple 10-12K trips. Didn't get many miles during the lock down.

There are many commercial haulers swear by them. Almost every rancher in this area run them on their stock & equipment trailers and those trailers take a beating. Currently Sailuns S637 & Goodyear Endurance are the top selling ST tire currently.

[JIMNLIN]

I sure hate to disagree but with 12,168 tire load capacity on a 11,400 lb 5W leaves you 768lbs of load in the 5W. Fill the fridge & minimum water in the fresh tank so you can flush & wash on the road, lawn chairs a generator etc your at gross. I'm pretty aware of loads & weights with 750K in my class 8 in all of the lower 48 states.

I use the 16" S637 Gs on two non rv trailers with 7k axles. There is no question the Sailuns are at the top of the 16" G rated tires on 7k/8k axles at this time on haulers websites and rv websites.

However at the time of my reply the OP says his trailer came with ST225/75-15 E tires. I may have missed it but I don't think the OP has said if the trailer is a tandem or triaxle trailer. The ST225/75-15 E works with a triaxle trailer. Lots of 14k gvwr rv trailers out here with 6k axles and fit in FMVSS tire and rim selections for a rv trailer.


When I pulled commercially I had all my trailers with tandem/triaxle 6k/5.2K axles switched to LT E at 3042 lbs capacity. We some times operate our trailers at max axle loads and never had a issue with LT E for 50k-60k miles per set.

[Edd505]

Originally Posted by JIMNLIN

I use the 16" S637 Gs on two non rv trailers with 7k axles. There is no question the Sailuns are at the top of the 16" G rated tires on 7k/8k axles at this time on haulers websites and rv websites.

However at the time of my reply the OP says his trailer came with ST225/75-15 E tires. I may have missed it but I don't think the OP has said if the trailer is a tandem or triaxle trailer. The ST225/75-15 E works with a triaxle trailer. Lots of 14k gvwr rv trailers out here with 6k axles and fit in FMVSS tire and rim selections for a rv trailer.


When I pulled commercially I had all my trailers with tandem/triaxle 6k/5.2K axles switched to LT E at 3042 lbs capacity. We some times operate our trailers at max axle loads and never had a issue with LT E for 50k-60k miles per set.

I upgraded my 7K to 8k for the extra load capacity. The up grade from 15 to 16 is a good move way more tire choices but rims cost unless he goes white spoke steel they are cheap enough and good rims, polished aluminum will cost as much as the tires, maybe more. You learn a lot about loads, weights and capacities the average RV guy will never consider when you pull commercial and are subject to weigh stations. I have never pulled or looked into tri axle trailers, I have seen the side scuff tire roll turning in parking lots, no thanks.

[FastEagle]

Originally Posted by Edd505

I upgraded my 7K to 8k for the extra load capacity. The up grade from 15 to 16 is a good move way more tire choices but rims cost unless he goes white spoke steel they are cheap enough and good rims, polished aluminum will cost as much as the tires, maybe more. You learn a lot about loads, weights and capacities the average RV guy will never consider when you pull commercial and are subject to weigh stations. I have never pulled or looked into tri axle trailers, I have seen the side scuff tire roll turning in parking lots, no thanks.

According to the specs for your signature RV; it came with 6000# axles and GY G614 LRG tires. Sometimes the trailer manufacturer will use 7000# axles in place of the 6000# axles for load capacity reserves. Your vehicle certification label will tell give you the facts.

By Going to higher load capacity axels and wheels/tires you DO NOT increase your trailer's load carrying capabilities.

[Edd505]

Originally Posted by FastEagle

According to the specs for your signature RV; it came with 6000# axles and GY G614 LRG tires. Sometimes the trailer manufacturer will use 7000# axles in place of the 6000# axles for load capacity reserves. Your vehicle certification label will tell give you the facts.

By Going to higher load capacity axels and wheels/tires you DO NOT increase your trailer's load carrying capabilities.

Yep I'm sure it came with 7000K and E rated tires, not sure where you came up with specs, they are not KZ's, RV trader maybe. The labeled weight does not change but I know I have the extra "load" with 8K axles & G rated tires. I do my own work so have a pretty good idea what I have. I also added Kodiak disc's best upgrade ever, want to discuss RV work? The 7K axles has 1/2" studs, the 8K 9/16. The 8K disc has a larger outer bearing than the 7K. The hardest part of the disc install s where to mount the pump, actuator, and fishing wires through the pin box. Lines need bent to shorten or cut and double flared (required for brakes) I'm well aware I can't take it to DOT and have the load label changed but there is no question capacities are improve, so yes I gained piece of mind. I work on my RV not just read Forums.

[FastEagle]

Originally Posted by Edd505

Yep I'm sure it came with 7000K and E rated tires, not sure where you came up with specs, they are not KZ's, RV trader maybe. The labeled weight does not change but I know I have the extra "load" with 8K axles & G rated tires. I do my own work so have a pretty good idea what I have. I also added Kodiak disc's best upgrade ever, want to discuss RV work? The 7K axles has 1/2" studs, the 8K 9/16. The 8K disc has a larger outer bearing than the 7K. The hardest part of the disc install s where to mount the pump, actuator, and fishing wires through the pin box. Lines need bent to shorten or cut and double flared (required for brakes) I'm well aware I can't take it to DOT and have the load label changed but there is no question capacities are improve, so yes I gained piece of mind. I work on my RV not just read Forums.

The official maximum load capacity for your axles is listed as the GAWR on the vehicle certification label. Anything above that is known as "load capacity reserves".