245/70 Sailuns

[piper guy]

There was a thread earlier where someone was thinking of using 245/70-17.5 on the coach. I’m researching possibly the same idea.

Did you do it ? And how did it turn out ?

[XCMARK]

They would need to go on a 6.75"~ 7.5" wide wheel , you should make sure your wheel is with in this spec. My current Sailun tires are 215 wide and leave fairly deep ruts in the grass , my thoughts are a bigger foot print would help reduce the ruts. They would also be slightly taller and wider and could be run at a reduced air pressure because they are 6000 lb rated tires. It seams like they are in short supply right now!

[piper guy]

That was my basis for starting to look, Mark. We are in softer surfaces at times, like right now in Myrtle Beach in a-sandy site where one side is about 4” deep in soft sand. I’d like a bigger and wider footprint. Looking for wheels now. I’ve also got the 215 Sailuns

Spent some time the other night talking to a good friend who is a retired Goodyear truck tire engineer about my idea of going bigger and then running less pressure but still higher than minimum needed for the weight on the load chart. He said no reason not too, that is why they do load charts. Doing that with the 245, I can run 80 psi and still be at 4800 lbs per tire Ride and handling should be much better, especially with the IS.

[XCMARK]

We are heading to Carolina pines in SC in late May , its my wifes birthday and she wanted to go someplace warm.

I think if you have a wheel that is wide enough this is a win ,win. I think dropping the tire pressure to 90 psi would be a big improvement but as you stated with IS not sure how much you will notice in the truck. I have a Hensley air ride BD5 hitch and that has done a good job of isolating the truck and trailer when going over bridges.

Simple tire . com has been my go to for Sailun tires. I would see if a local shop can ballance them , mounting 1/2 size wheels are easy they don't have bead locks so the tires fall on the wheels.

[piper guy]

Found 6.75” wheels on etrailer and Tredit, looking a bit more as I’d prefer to have 7-7.5”. In any case, next year when I need to replace the 215’s, I’m going to go to the 245.

Figure a hot shotter or equipment mover will jump at a mounted set of H Sailuns even if 5-6 years old. That will help offset the upgrade some. Lol

[XCMARK]

Originally Posted by piper guy

Found 6.75” wheels on etrailer and Tredit, looking a bit more as I’d prefer to have 7-7.5”. In any case, next year when I need to replace the 215’s, I’m going to go to the 245.

Figure a hot shotter or equipment mover will jump at a mounted set of H Sailuns even if 5-6 years old. That will help offset the upgrade some. Lol

I got a set of Alcoa wheels , They where modified by Rickson wheels . I dont know what he does to them and it took 4 months to get them from him. If you have the time give Alcoa a call and see what the differance from the wheels that use 9/16" cone style lug nuts and the 5/8" washer lugs . As far as I know all the Redwoods used 9/16" cone lugs.

The more I think about it he countersinks the holes for taper seat lugs

https://www.southwestwheel.com/c-51-...er-wheels.aspx

[XCMARK]

Has anyone done the 245/70/17.5 tire upgrade ? My current tires have just over 5 years on the road and thinking that I need to start looking at them more close to replace them. What air pressure are you running with the larger tires ?

[mhs4771]

Mark, I'm looking to replace tires soon also. Currently running the Sailun 215/75R17.5 and would like to upgrade to a slightly heavy duty since we're presently close to the capacity of current tires. The 245s would be nice, but would require new rims for us, so I might just go with the 235s which work with our 6 1/2" rims and would only add 1/2" to our height.

[Ford truck guy]

I Was doing my post trip walk around today getting ready to start winterizing our Redwood and found the pic below.... This is our 5th year of using them and was hoping to get 1 more year, looks like I will have to replace them in the spring before I roll out for 2024 season

I have been flipping between the 235 and the 215's.... My ONLY concern is availability... what is the availability of the 235's while traveling >?? I know the 215's re much more well known..


[IMG][/IMG]

[mhs4771]

I'm thinking of the 235 because of the 6005 Load, vs the 4805 on the 215, especially since I know were pushing close to 8K on the axles. The 235 would give me more reserve capacity and still fit my 6.75 rims. I get mixed answers on the 245/70s which would only be 1/2" taller vs the 1" on the 235/75s. For the 245 I see some places that say 7" rims, while other say 6.75 is good. Who do you believe? I have two tires that are 4+ years old and the other 2 have been replaced at one time or another because of failures. Plan to change them all this winter when I can do one side at a time while parked.

[Ford truck guy]

FYI..

Simple Tire is having another sale.... $680 for 4 of the Sailun S637SP 215/75R17.5 shipped too me after tax and free shipping

[XCMARK]

1/2" different from one tire to the other in an emergency use is not going to be a big deal. Every time I go across the grass with the 215 tires I get some deep ruts , I was hoping to reduce this with a slightly wider tire.

[mhs4771]

I agree we're the same about leaving ruts in soft ground. I'd like to go to the 245, but don't want to spring for new wheels at this time as we may end up down sizeing in the near future.

[Nedshred]

The Sailun commercial truck tire catalogue shows both 235/75/17.5 and 245/70/17.5 tire rim widths of 6.75” for the S637 tires.

[mhs4771]

I couldn't find any marking on my rims, but best guess is either 6.75 or 7 inches, so I think I'll go with the 245/70 almost the same OD as my current 215/75s, but go from 4805 to 6005 cap/tire. Will give us some extra as we're close to 16K on the axles.