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No there isn't but I only have less than 1 inch to play with so have to be very cautious. Seems like I read somewhere about distance between tires (in line) for cooling.
Dexter says minimum of 1" between the tires. I think you may be stuck with the factory 235/80 size. What is the spacing center to center on the axles? My old goose was 33" with the LT235/85R16 and was about 1" between. Anything less than 33" would be a no go.
If you can swing it and have 110 psi rated wheels...get the Sailun S637 235-85-16. It's an E rated tire, 3750 lbs @110 psi. These tires are beasts, the sidewall I swear is 1" thick. Yes they are made in China but the Sailun company makes nothing other than 18 wheeler type tires. I bought 4 of them for my 34'6" Mountaineer on ebay from a vendor that goes by "rustybore", cost me right at $700 shipped to the house. Look on some rv forums and do a search for sailun S637. I've still got plenty of room between my tires.
It gives me around 6 different tires to choose from. All 10 ply. Been looking at Bridgestone tires. Local grain elevator sells a lot of them with no problems on pickups.
How do you know what PSI the wheel/rim is rated at? Will it be stamped on it somewhere or will you know just by the lug count?
I apologize for posting a video I thought was good information but turns out should have been on Saturday Night Live. My wife and I will be getting a Montana High Country in the next year or so and tires are one of the first things I will be changing on the trailer.
GTRider / Sous ..... sorry for the delay, was on a trip. The psi rating for the wheel is usually cast into one of the spokes on the backside of the wheel. Kind of a PITA to find it but you just have to crawl up under there and look. I'm so sold on these tires I would never run anything else on a heavy 5th wheel.
I pulled a wheel off and only found a mfr code stamped on the back. I know never assume but I find it hard to believe a steel wheel with 8 lugs couldn't handle 110 psi. My compressor tank is probably thinner.
As with our last 5er, the sticker may be on the inside of the rim, under the mounted tire.
Several other owners of that brand RV called the wheel manufacturer and all that was needed to change to 110psig was a bolt in valve. Not necessarily the case on any other brand wheel but if you can find out who made the wheels, a call to them might fix your problem.
GTRider.....I just looked on trailertireandwheel.com, They have 4 different 8 lug 16" steel wheels available and all are rated at 3750 lbs. which "should" equate to 110 psi, of course never assume anything.
I didn't know you had steel wheels and the maker "usually" stamps the wheel info in little letters on the back of the wheel. Some of them are hard to read, specially for us old guys so clean the outside rim off real good and take a look. You could also call your trailer mfg. and ask them what brand of wheel they use.........good luck with finding anyone there that could answer that question.
I was advised that KA is the code for SVIZZ-ONE CORPORATION LIMITED, in Thailand, but who knows. These are on a 2002 Carriage Cameo. I think the first 5 digits are a date.