F or G tires on 6 lug wheels?

[gearhead]

I've got 6 lug wheels and would like to run F or G load range tires. Does anyone run these tires at 90 or 110 psi on a 6 lug wheel? If you do, do you know the brand of the wheel?

[denverpilot]

Others here are smarter than I on this topic, but the number of lugs is not relevant in the pressure capacity of the wheel. The wheel will either be stamped with the pressure it can handle (if you're lucky) or you'll need to go to the larger RV wheel manufacturer's sites and hunt the photos for your wheels, or post up a photo and someone may already know.

There are wheels that can do it, and wheels that can't.

A good quality workmanship tire shop should also be able to figure it out for you.

Mine were stamped. Made the decision to use F rated tires a no-brainer other than my axles are very close together so we had to do a little measuring to make sure nothing would be rubbing or interfering with anything.

[bsmith0404]

I've never seen a 6 lug wheel rated above 80 psi. That could be because there isn't a need to test them above that due to the weight they are intended to carry, but I don't know that for sure. A couple other thoughts, trailers with 6 lug wheels typically aren't that heavy, adding an F or G rated tire at 90 or more PSI will give you a very stiff sidewall causing more bounce and possible stress your trailer. If it were me, I'd go with an E tire (I'm guessing you have Ds now) and run it at 75 psi. That will still give you additional carrying capacity, some sidewall flex for a smoother ride, and stay within your (most likely) 80 psi wheel rating.

[larry337]

FWIW I personally talked to a rep from Sailun and he told me the s637 does not have to be run at max pressure. The weight carrying capacity goes down with less pressure but there is no effect on performance, ie: speed rating, wear, longevity. So for example at 110 lbs the load capacity is 3750 and at 80 lbs the capacity is 3042 lbs. I am seriously considering going this route. My fiver is aprox 12500 with a pin weight of 2400ish so figure 10000 on the tires. I'll attach the chart he sent me but not sure if it will be readable in this format.

[bsmith0404]

FWIW I personally talked to a rep from Sailun and he told me the s637 does not have to be run at max pressure. The weight carrying capacity goes down with less pressure but there is no effect on performance, ie: speed rating, wear, longevity. So for example at 110 lbs the load capacity is 3750 and at 80 lbs the capacity is 3042 lbs. I am seriously considering going this route. My fiver is aprox 12500 with a pin weight of 2400ish so figure 10000 on the tires. I'll attach the chart he sent me but not sure if it will be readable in this format.

This is the same concept that Maxxis and Carlisle use, for example, Maxxis has a chart that shows a 205/75R15 tire with 50 psi, has a C load rating or 1820lbs, that same tire with 65 psi is a D load rating or 2150 lbs.

Carlisle lists them as separate tires, same size with 50 and 65 psi and 1820 or 2150 load capacity respectively. They show the same type of relationship on their 235/80R16 E and F range tires with 80 and 95 psi.

So in a sense, if you are going to end up with a lower load range tire by running less air, why not just buy a lower load range tire and run max air? If the lower range tire is cheaper, save a few $. If their the same price, then it doesn't matter. I wouldn't be surprised if they are the same tire with different sidewall markings.

[CWtheMan]

FWIW I personally talked to a rep from Sailun and he told me the s637 does not have to be run at max pressure. The weight carrying capacity goes down with less pressure but there is no effect on performance, ie: speed rating, wear, longevity. So for example at 110 lbs the load capacity is 3750 and at 80 lbs the capacity is 3042 lbs. I am seriously considering going this route. My fiver is aprox 12500 with a pin weight of 2400ish so figure 10000 on the tires. I'll attach the chart he sent me but not sure if it will be readable in this format.

I cannot provide anything worthwhile for this thread.

[larry337]

This is the same concept that Maxxis and Carlisle use, for example, Maxxis has a chart that shows a 205/75R15 tire with 50 psi, has a C load rating or 1820lbs, that same tire with 65 psi is a D load rating or 2150 lbs.

Carlisle lists them as separate tires, same size with 50 and 65 psi and 1820 or 2150 load capacity respectively. They show the same type of relationship on their 235/80R16 E and F range tires with 80 and 95 psi.

So in a sense, if you are going to end up with a lower load range tire by running less air, why not just buy a lower load range tire and run max air? If the lower range tire is cheaper, save a few $. If their the same price, then it doesn't matter. I wouldn't be surprised if they are the same tire with different sidewall markings.
I guess my thinking is the Sailun has excellent feedback from users and is sold at simpletire.com for $125 each. In addition is rated for 75 mph (my typical cruising speed is 65-70). Even though they are more then I need they just seem like a great value. I haven't heard of an unhappy customer.

Sent from my SM-G920V using Tapatalk

[larry337]

When using "plus sized" tires, industry standards will tell you to use an inflation pressure that will allow them to equal the load capacity of the original equipment tires.
So as the resident tire expert do you believe it is safe to run the Sailuns less than the maximum psi?

Sent from my SM-G920V using Tapatalk

[bsmith0404]

I guess my thinking is the Sailun has excellent feedback from users and is sold at simpletire.com for $125 each. In addition is rated for 75 mph (my typical cruising speed is 65-70). Even though they are more then I need they just seem like a great value. I haven't heard of an unhappy customer.

Sent from my SM-G920V using Tapatalk

Sailuns are a great tire, I'm just concerned that they may be too heavy duty for a lighter camper. They do not have much sidewall flex at all regardless of how much air is in them. I'd just be worried that the stiff sidewalls would add undo stress to other parts of the trailer. I've always liked going up one load range from what came standard, so d for C and E for D. I personally run F instead of the stock E. That gives a little room to spare on load capacity without losing all of the tire "sidewall suspension". Trailers get beat around a lot as it is. I know many will disagree with me on this, but it's just my personal opinion. Going to a G rated tire on a RV that originally came with a D just seems like way too much.

[larry337]

But my tires are an E now, my trailer is 12500?

Sent from my SM-G920V using Tapatalk

[gearhead]

I was purposely vague with my question. My 5th is 12,500 GVWR. I run 3,000+ pin weight and usually about 8,500 on both trailer axles combined. I have 5,200# Dexter axles with 6 lug Tredit TO3 wheels. The trailer came with 235x80x16 LRE Towmax. I immediately replaced them with MAXXIS M8008 of the same size and load rating. I have little chance of overloading my current tires or axles. No problems yet with the MAXXIS'. But....I would consider going to a F or G tire just for the even more margin and what I perceive as more over-engineered.
The other but....I have heard that trailer tires should be run at max sidewall pressure regardless of load to prevent too much flexing and overheating. I have talked to Tredit wheel and they said do not run the wheel more than 80psi. Others say it doesn't matter if the valve stems are steel and held on with nuts. I have looked and cannot find a 6 lug wheel rated for more than 80psi.
So I can run F or G at 80psi with no sidewall overheating issues???

[larry337]

So I can run F or G at 80psi with no sidewall overheating issues???

That's what the Sailun rep told me, I saved the email.

I really think that's what I'm going to do. The only other option is Maxxis 8008 or Goodyear Marathon and I've heard mixed reviews on both. I have the same wheel and similar weights as you.

[larry337]

Here is the transcript of the email:




RE: requesting technical specs s637
Alan Eagleson ([email protected])

[email protected]

The tire is designed to run up to the maximum air pressure at the maximum load at the rated speed. If you have the tire inflated to 80 psi and the load is below 3000 lbs. per tire, it will not over-heat. The speed rating is “L” which is maximum of 120 km/hr. The over-heating comes from running the tire more than 120 km/hr or under-inflated for the load or a combination of the two.



You should be good to go based on the information you have provided.



Al Eagleson ‘ACE’

Director, Commercial Truck Products

Sailun

Off 905-595-5558 x671

Cel 416-315-9391

www.sailuntires.ca

[gearhead]

That's what the Sailun rep told me, I saved the email.

I really think that's what I'm going to do. The only other option is Maxxis 8008 or Goodyear Marathon and I've heard mixed reviews on both. I have the same wheel and similar weights as you.

I've got a while before I need them, but I'm thinking the Sailun 235x80x16.
Now, on to worrying about something else.
Thanks to all for the input.

[jw99]

I've got a while before I need them, but I'm thinking the Sailun 235x80x16.
Now, on to worrying about something else.
Thanks to all for the input.
I did exactly this. I have been running Sailuns 235x80x16's for over a year. I have a 37' fifth wheel and these are solid tires. The trailer doesn't bounce like it did with Tow Max tires.

Sent from my SM-T330NU using Tapatalk

[gearhead]

I did exactly this. I have been running Sailuns 235x80x16's for over a year. I have a 37' fifth wheel and these are solid tires. The trailer doesn't bounce like it did with Tow Max tires.

Sent from my SM-T330NU using Tapatalk

You running them at 80psi? Ride doesn't seem too harsh?

[bsmith0404]

Here's the chart from Maxxis. Personal opinion, with a 12k lb trailer you are in a very safe range with E rated Maxxis tires. You have nearly 1k lbs per tire to spare and are running on tires with a very good reputation, but you already know that.

http://www.maxxis.com/trailer/trailer-tire-loadinflation-chart

[gearhead]

Yeah but I thought for basically the same money the Sailuns would work if they don't cause collateral damage. I usually go for overkill on everything. Leftover from working days I guess. I just didn't want to get into swapping axles/hubs to run 8 lug wheels.

[larry337]

The Maxxis would be my second choice. But they cost more, have "some" bad reviews, most are good, and are made in China from what I've heard. But it's between these 2.

Sent from my SM-G920V using Tapatalk

[bobbecky]

With the light load on the 5200 lb axles, you could easily run good LT truck tires, as quite a few people do, and have the best of both worlds. You will have a much better selection of tires also.

[CWtheMan]

So as the resident tire expert do you believe it is safe to run the Sailuns less than the maximum psi?

Sent from my SM-G920V using Tapatalk
I'm backing out of this thread. I cannot find any valid reason to worry about tires that are able to provide 1800# of load capacity per axle.

[jsmith948]

The Maxxis would be my second choice. But they cost more, have "some" bad reviews, most are good, and are made in China from what I've heard. But it's between these 2.

Sent from my SM-G920V using Tapatalk

Maxxis tires are made in Thailand.

[larry337]

Maxxis tires are made in Thailand.
Thank you I didn't know that.

Sent from my SM-G920V using Tapatalk

[Titan Guy]

There are some 6 lug wheels now rated for 110 psi for the 3750 load capacity.
They are all steel (Chrome Mods) no aluminum are available.

I have been converting customers with 6 hole wheels to the Sailun G for over 6 months.

[gearhead]

There are some 6 lug wheels now rated for 110 psi for the 3750 load capacity.
They are all steel (Chrome Mods) no aluminum are available.

I have been converting customers with 6 hole wheels to the Sailun G for over 6 months.
A brand or source for the wheels would be great.

[Titan Guy]

www.performancetrailerbraking.com

[gearhead]

^^^Thanks, but all I see is brake conversions.

[squeak93]

I've got 6 lug wheels and would like to run F or G load range tires. Does anyone run these tires at 90 or 110 psi on a 6 lug wheel? If you do, do you know the brand of the wheel?

I run f rated Carlisle tires at 85psi. Just got back from 2700 miles with my trailer. It pulled like a boss and no ill effects.

For the 20 bucks a tire difference it was a no brainier for me.

[dcg9381]

I run f rated Carlisle tires at 85psi. Just got back from 2700 miles with my trailer. It pulled like a boss and no ill effects.

I think F is great for a trailer in the 10-11k range (loaded). More weight than that, I'm going to G...

[squeak93]

I think F is great for a trailer in the 10-11k range (loaded). More weight than that, I'm going to G...

That is exactly where my trailer is depending on the load out inside.

[dcg9381]

I looked it up before commenting.. :-)

[gearhead]

I run f rated Carlisle tires at 85psi. Just got back from 2700 miles with my trailer. It pulled like a boss and no ill effects.

For the 20 bucks a tire difference it was a no brainier for me.

What are your wheels rated for, what weight and/or psi ?

[squeak93]

What are your wheels rated for, what weight and/or psi ?

80 or 85 psi. I can't remember now. I'm on the verge of needing different wheels. So far no issues. I've got waaayyyy more tire than needed. I also clip along at more than the average pace down the highway. Time is usually more important than fuel cost.

Zero issues and very little psi fluctuation as well. I am pretty anal about proper psi and inspections before every outing.

[gearhead]

80 or 85 psi. I can't remember now. I'm on the verge of needing different wheels. So far no issues. I've got waaayyyy more tire than needed. I also clip along at more than the average pace down the highway. Time is usually more important than fuel cost.

Zero issues and very little psi fluctuation as well. I am pretty anal about proper psi and inspections before every outing.

Is that the Carlisle radial trail?

[squeak93]

Is that the Carlisle radial trail?

I'm about 85% sure they are. The rv sits in a storage lot when not in use. I'll try to stop by there and validate.

[denverpilot]

I'm about 85% sure they are. The rv sits in a storage lot when not in use. I'll try to stop by there and validate.



Is that the Carlisle radial trail?



That's them. I've been running them a couple of years now and have no complaints. They're wearing wonderfully but I'm going to start getting nervous after three years now, whether I need to be, or not. Haha.

These are also F rated on wheels that'll handle 85 PSI. They are slightly bigger in circumference than the tires most of these trailers come with, so check clearances before purchasing.

Mine fit the wheel wells well but they do run slightly closer together with tighter spaced axles, and you can't fit a standard X-Jack type chock between them, for example. I don't need/want one of those, so I didn't care, but I mention it for completeness.

If one of them ever picked up something long in the tread, I suppose it could damage the other tire. I'll take my chances on that.

[squeak93]

I did have to remove and trim my fender skirts to fit. I can still use wheel chocks and have plenty of clearance from the bottom of the trailer and around them.