Time for Heavy Toy Hauler tires...how about these?y

[DHayden]

FED EX lady HATES me. 6 Sailun S637 tires came today and they are HEAVY. All say made in Vietnam.

 

[SSage]

I will be needing trailer tires soon, I may do the same thing. I haven't had time to check with my tire guy, but I think he sells those. I went with Firestone LT's on the KZ toy hauler last time, but they were pricey for something that dry rots before I wear off the tread.

 

[DHayden]

KZ's are nice well built units. At the time I bought mine I couldnt justify the coin for a KZ. Glad I didnt now because I hardly ever used the one I did buy. I still bought a quality TH, just not KZ level.





9

 

[SSage]

KZ had the GN frame and the wood wall option. I was full timing so it was worth the cost. I went big because I usually only moved it two or three times a year. I asked for extra insulation and for a 44' long triple slide it would stay cool with one AC running most of the time. Had lots of issues with the huge slides leaking up front though, it had to be repaired a few times. No issues at all with the Forest River slides, go figure. I'm trying to find a smallish 30' toy hauler now for short trips with no slides, I want something easier to tow. I love those back ramps, easy for old folks and my big dog to get in and out. I only have one old V-Strom motorcycle now I take to the curves occasionally, but I like the toy hauler concept even without the toys to haul.

 

[Cummins12V98]

FED EX lady HATES me. 6 Sailun S637 tires came today and they are HEAVY. All say made in Vietnam.

Better than Chicom China I suppose.

 

[SSage]

I bet most of those Asian sourced tires are owned by the Chinese gov in one way or another. Many companies had moved production to China years ago, the US tariffs had them moving production or just relabeling the tires to South Korea, Vietnam, Taiwan etc. Even Cooper is selling Chinese truck and trailer tires. Years ago I bought a set of Metzler Tourances for my motorcycle and they had made in China on the side, used to be made in Germany. I don't think they are the same, just felt like a harder rubber compound and I never bought anymore. My Bridgestone Battlewing tires for my current bike are still made in Japan so far and thankfully the quality has been consistent for many years, I hope they don't change!

 

[Tuesdak]

FED EX lady HATES me.

Tires roll off the truck or trailer. It's loading them that's not fun.

 

[Tractorat]

The first set of tires on my 14 were made in vietnam. I wasnt very happy about that for a couple of reasons. But..........., they turned out to be very good tires and I was very happy with them.

 

[SnoKing]

The first set of tires on my 14 were made in vietnam. I wasnt very happy about that for a couple of reasons. But..........., they turned out to be very good tires and I was very happy with them.

A lot of tires are made in Thailand also!

 

[DHayden]

Tires roll off the truck or trailer. It's loading them that's not fun.

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They roll off the truck but they dont stack themselves and she's pretty little, but she still did it. I think they have to load their own trucks in the morning also.

 

[bcbender]

My tires will age out next year but since I'm going cross country in 6 weeks, I decided to replace them. . My coach weight in at about 15~16k with two 7K axles, the original OE tires blew at 3yrs and change...235/85/16 E so I moved up to 235/85/16 F. The F rated tires are running cooler than the E ever did, but now I was considering the Sailun S637s mostly due to the lack off negative reports out there. Is there any down side to going up yet another LR on my 5er? My Alum wheels are rated for 110psi, so should be OK for the G rated tire, but I assume I would need to run them at a slightly lower pressure (100psi)? I have had no issues with the current tire and have the same on on my GN, (Hercules ST2 235/85/16 F) but would not mind having extra load carrying capacity and perhaps more longevity?

 

[AH64ID]

My tires will age out next year but since I'm going cross country in 6 weeks, I decided to replace them. . My coach weight in at about 15~16k with two 7K axles, the original OE tires blew at 3yrs and change...235/85/16 E so I moved up to 235/85/16 F. The F rated tires are running cooler than the E ever did, but now I was considering the Sailun S637s mostly due to the lack off negative reports out there. Is there any down side to going up yet another LR on my 5er? My Alum wheels are rated for 110psi, so should be OK for the G rated tire, but I assume I would need to run them at a slightly lower pressure (100psi)? I have had no issues with the current tire and have the same on on my GN, (Hercules ST2 235/85/16 F) but would not mind having extra load carrying capacity and perhaps more longevity?

I would not run a tire too much higher than needed for the load. This would be deemed as an overinflated tire, and overinflated tires are more susceptible to road hazard, uneven wear, and have reduced handling/braking.

110psi rated 235/85R16's are rated to hold 4400lbs, which is a lot more than needed. Basically you would run a LRF or LRG at the same pressure for your 7K axles, so IMHO it doesn't make much since to up to LRG tires when LRE meets the needs and LRF is already overkill.

 

[SSage]

Best to weigh the trailer axles loaded and use the tire manufacture's load chart. I don't think I have ever needed 110 psi in my triple axle KZ 41KG, but its been gone for a while now. The memory fades, but I don't miss that monster.

 

[bcbender]

yeah, I have not weighed it yet, but there it definitely rides and handles better with the LRF tires with less heat and pressure rise than the LRE were. Right now it's being emptied out to pack in what we want for the Yellowstone trip and then I plan to weight it, but it's 13K empty w/o water so I am sure it's at least 14 or 15 with all the crap everyone brings on board. I run the LRF tires at 80-85 PSI (90max) and it does great, just thought Id see if there was any benefit to the higher LR tires with perhaps better road manners (at a lower pressure of course). I never ran my 34" Nittos on my 04 at 80 psi because they would've been over inflated for the load so I was thinking the same theory here.

 

[Ozymandias]

Best to weigh the trailer axles loaded and use the tire manufacture's load chart. I don't think I have ever needed 110 psi in my triple axle KZ 41KG, but its been gone for a while now. The memory fades, but I don't miss that monster.

I highly recommend that too.
Same applies for truck tires. Go by the tire manufacturers chart - the ride will be so much improved.

 

[DHayden]

I found these two charts. The first one is Sailun but appears to be inaccurate (EDIT: it is not showing G rated tires). It shows the 235/85R16 at 4080 at 110psi which mine are actually rated at 4400 at 110psi.
After reading several tire articles, they seem to agree that trailer tires are rated the same load and psi for the same size. Take that for what its worth, however it appears the second chart that is for Goodyear tires seems to mirror my tire application for size and rating at 110psi.
Looking at the chart, it would appear that I could safely run 90psi which would still leave me a little extra capacity over my trailers 21k rating. Actually a good amount is pin weight so it should give plenty of extra capacity actually on the trailer at 90psi.
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[Ozymandias]

please forget about that E and F and G ratings, they are outdated and not really accurate. The only rating that counts is the LI rating, above mentioned in brackets and that is the one that counts.
You can take tire pressure charts from any manufacturer - same size and same speed/Li rating shows the same pressure per pound load. It is more or less standardized.

 

[NIsaacs]

yeah, I have not weighed it yet, but there it definitely rides and handles better with the LRF tires with less heat and pressure rise than the LRE were. Right now it's being emptied out to pack in what we want for the Yellowstone trip and then I plan to weight it, but it's 13K empty w/o water so I am sure it's at least 14 or 15 with all the crap everyone brings on board. I run the LRF tires at 80-85 PSI (90max) and it does great, just thought Id see if there was any benefit to the higher LR tires with perhaps better road manners (at a lower pressure of course). I never ran my 34" Nittos on my 04 at 80 psi because they would've been over inflated for the load so I was thinking the same theory here.

I don't see a down side to a heavier trailer tire or a truck tire for that mater. A Ram 2500 with four 275/70x18 LRE's is a total of 14,560 lbs for a 10k rated truck.

My 16k Lamar dump trailer is oem equipped with (4) 215/75x17.5 LRH's for a total of 19,200 lbs.

My 20k PJ dump trailer is oem equipped with (4) 235/75x17.5 LRJ's for a total of 24k capacity.

A built in safety/weight margin is a good thing.

 

[bcbender]

Thanks you all for all the info, I have more research to do clearly. I will def weigh it and see where things are.

I am not a tire expert but it seems to me that having capacity over the carried load is a good thing so long as one is not over inflating the tire to carry a load that's not there. As I had said, the LRF tires seem to handle better and had much less sidewall flex than the LRE that it came with but maybe those were lower quality tires as well. I run similar pressure to the originals (75psi on the OE tires, 85psi on the LRFs) and noticed much cooler running temps on the LRF tires. So just for my own curiosity, seems like LRE, LRF, LRG tires all have similar load capability at a given pressure so why not go for the higher load rating and adj pressure to match the need rather than running the lower LR tire at max capacity?

 

[AH64ID]

Thanks you all for all the info, I have more research to do clearly. I will def weigh it and see where things are.

I am not a tire expert but it seems to me that having capacity over the carried load is a good thing so long as one is not over inflating the tire to carry a load that's not there. As I had said, the LRF tires seem to handle better and had much less sidewall flex than the LRE that it came with but maybe those were lower quality tires as well. I run similar pressure to the originals (75psi on the OE tires, 85psi on the LRFs) and noticed much cooler running temps on the LRF tires. So just for my own curiosity, seems like LRE, LRF, LRG tires all have similar load capability at a given pressure so why not go for the higher load rating and adj pressure to match the need rather than running the lower LR tire at max capacity?

I would guess your observation differences were two fold, better tires and 10 psi more for the same load. Both will have the effects you saw.

I would look at how the LRG's are constructed. If it changes the sidewall construction to go to a LRG tire then you may not be able to reduce the pressure as much without potential issues as well. It also might not be an issue for the load you carry.

The other thing to consider is cost, you could spend 20% more money for 0% gain.

When I ran 19.5's on my 05 the sidewall construction on those tires didn't allow for pressures to be reduced below 70 psi, regardless of the load. It was more pressure than I wanted to run a lot of the time.

I don't see a down side to a heavier trailer tire or a truck tire for that mater. A Ram 2500 with four 275/70x18 LRE's is a total of 14,560 lbs for a 10k rated truck.

My 16k Lamar dump trailer is oem equipped with (4) 215/75x17.5 LRH's for a total of 19,200 lbs.

My 20k PJ dump trailer is oem equipped with (4) 235/75x17.5 LRJ's for a total of 24k capacity.

A built in safety/weight margin is a good thing.

No a little safety margin isn't a bad thing, but at some point it just becomes overkill and not needed or beneficial. It's like guys that want to make their 1/2 ton's better at towing heavy and throw LRE tires on it and then run them at 80 psi. No point or real benefit to that as they just end up overinflated and way over axle ratings. A LRC tire would do plenty on these trucks.

The 2500's you're looking at aren't as overkill as the GVWR makes them look. They are artificially limited on GVWR, but on RAWR is closer to warranting the LT275/70R18, and some of it is tire options too. I am not aware of any tires that have the appropriate LI for the RAWR on the Ram 2500. When you get larger tires, like all OEM's are these days, the LR and LI go up. I'm sure some of the tire size vs LI comes into play on the dump trailers as well.

Lastly, if you're running the higher rated tires with the proper pressure for the load then you've lost that weight safety margin... but you've gained improved traction, improved handling, reduced wear, and decreased susceptibility to road hazards. It's a trade off for sure.

So a little overkill isn't bad, but really the tire ratings themselves (more so on LT than ST) already have some decent overkill built in. I've run my LT275/70R18's at 100% of load capacity more than once and they don't handle different than when loaded at 80% of capacity. I don't feel the need to increase the LI for running at 100% of current capacity.