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Old 11-29-2021, 01:07 PM   #41
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Tireman. The total weight on my trailer is about 17,400. The weight on the wheels was about 13,400. Far below the total weight rating for the four tires.



OK good to now you have checked the weights vs the Load / Infl tables. Not everyone knows their actual axle loading.
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Old 12-04-2021, 02:04 PM   #42
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As a follow-up to my earlier post, I had made up my mind to replace my Goodyear's with Sailun. The Sailun 235/85/16 spec is to mount on a 6.5" to 7.5" rim width. I assumed my 255/85-16 were on rims in that range but decided best to check. To my surprise, my rim width is 8". Not sure if this was normal for these tires although worth checking for those considering a change in tire size.
How did you go about finding out your rim width?
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Old 12-04-2021, 07:27 PM   #43
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Tireman. The total weight on my trailer is about 17,400. The weight on the wheels was about 13,400. Far below the total weight rating for the four tires.

Does the "about" mean you don't have the truck scale printout? i don't mean to be picky but I often find that people rely on sales literature for weight numbers rather than the actual measurements. It's also important to at least get the individual axle numbers as very few RV have the load evenly split axle to axle to axle and the split on an axle is seldom 50/50% end to end. 500# heaviest tire to lightest tire is not unusual and that can put one tire in overload even when the total on the two axles when divided by 4 indicated no tire was in overload.
The above is how we end up with the data showing that more than half of the thousands of RVs that have had individual tire load measured discovered one or more was overloaded.


Your correct MINIMUM inflation is 10% over the inflation indicated in the Load Inflation tables based on your measured load. - A + 25% would be better but that may be higher than your tire or wheel rating.
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Old 12-04-2021, 07:36 PM   #44
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How did you go about finding out your rim width?
Many times it is stamped on the wheel and you will find something like "16x7JJ".


Rims come in 1/2" increments so even a tape measure should get you close enough if you remember that the actual measurement is on the tire/wheel interface or the "inside" dimension and not the outside widest dimension.



https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAE
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Old 12-04-2021, 07:38 PM   #45
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Many times it is stamped on the wheel and you will find something like "16x7JJ".

Rims come in 1/2" increments so even a tape measure should get you close enough if you remember that the actual measurement is on the tire/wheel interface or the "inside" dimension and not the outside widest dimension.
See the drawing on the link below.


https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAE
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Old 12-05-2021, 07:56 AM   #46
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My rims aren't stamped so I used a tape measure.
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Old 12-05-2021, 04:35 PM   #47
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