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tireman9

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    Akron, OH
  • Interests
    Genealogy, Travel out West. Tires
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  1. Commercial tire dealer may not understand RVs. Get on a CAT scale. Assume one axle end has 53% of the total axle load and use Load/Inflation tables to learn your Cold Inflation Pressure. Get the tire to a Herculese tire dealer and get it inspected. Tires should not have bubbles in sidewall.
  2. tireman9

    Tire wear question

    Can't really see tire wear in that picture BUT do the two tires measure the same OD? (OC is easier to measure once off the trailer.) If OC is more than 1/4" different you MUST have the larger tire inspected ASAP for possible belt problems. here is more info on that https://www.rvtiresafety.net/2018/05/st-tire-belt-separation-autopsy-how-to.html
  3. tireman9

    Tire PSI

    Here is the Double Coin Load charts. http://www.doublecointires.com/wp-content/uploads/Double-Coin-TBR-Data-Book.pdf While I didn't check all the numbers I believe you will see they match all other tire company tires of same size & LR except for a few Michelin tires that are sometimes different by 5 psi or have load capacity difference of a few hundred pounds. When an RV size tire is made the tire company doesn't know what vehicle it is going on. Only time a tire company knows that info is for regular production cars and smaller trucks. Load charts have been around for more than 50 years so the tire companies know how to make tires to perform to those. Getting on a truck scale to learn your actual axle loads is easy, Low cost (I believe less than $20). At FMCA Conventions RVSEF offers a real service to measure each tire position as very few RV have 50/50 side to side laod split which is the assumption for the 80psi on the Federal stickers. I would support 90 - 95 until you get individual position scale weights. Be sure you have a 15% Reserve Load capacity above your ACTUAL heaviest end per axle. if possible. Get and run TPMS and be sure it is programed correctly.
  4. All tires have "Made In xxxx" molded on the sidewall so no need for bar code translation.
  5. Well the "SmartWay" program is a reasonable way of comparing fuel efficiency of tires. There are specific performance standards a tire has to meet to get the rating. In general you can compare across brands as the "Big Guys" will display that Logo in their literature if it meets the standards. A claim for "better fuel economy" without the SmartWay logo is what you call propaganda. I believe that when you look at same size, Load Range and type (Rib vs Rib or Traction Vs Traction ) you can figure similar fuel economy. If you go to the Goodyear web site The Endurance LHS is not included in the Goodyear RV tire data book. It is on pg 14 of the GY Commercial tire Data Book under "Long haul" It does show SmartWay but as a "Long Haul" it may not deliver equal MPG as an "RV" tire which are normally considered Regional. You would need to talk with someone at GY Commercial truck tires
  6. "more fuel efficient" than what tire? Do they carry the EPA "Smart way" seal?
  7. I agree with Herman that buying scales is expensive. I would not do that. Have you checked with RVSRF to see what they are doing? If you travel to Oregon or WA you can look for "State Scales" as I posted HERE. I have a dozen posts on this topic on my blog so check "weight" in the keyword list on lower left or check these sites https://www.publicscaleslocator.com/ https://www.dieselboss.com/service.htm https://www.allstays.com/c/weigh-scales-locations.htm
  8. Here is a 1 hour YouTube of my ZOOM talk on tires in RV application.
  9. My brother asked me " Why should I NOT buy a "new" 2019 Thor 37' class A toy hauler? Know of any hidden mechanical issues/history with Thor "Outlaw" models?"
  10. Some of you might have attended one of my seminars on RV tires at a Int'l Convention. I was scheduled for Tuscon and Lincoln but both were canceled. I have been doing a couple of ZOOM meetings and wonder if and how many would like FMCA to have me present via ZOOM a seminar? I have one focused on Motorhome application and one on trailer application. The trailer works for both RV trailers and for those with Motorhomes that pull a trailer (Box or car hauler or boat trailer type) Drop me an email and if there is sufficient interest I think it can be worked up. Tireman9 at Gmail.com
  11. Some of you might have attended one of my seminars on RV tires at a Int'l Convention. I was scheduled for Tuscon and Lincoln but both were canceled. I have been doing a couple of ZOOM meetings and wonder if and how many would like FMCA to have me present via ZOOM a seminar? I have one focused on Motorhome application and one on trailer application. The trailer works for both RV trailers and for those with Motorhomes that pull a trailer (Box or car hauler or boat trailer type) Drop me an email and if there is sufficient interest I think it can be worked up. Tireman9 at Gmail.com
  12. I have had some issues with the accuracy of information published by Simple Tire in the past For Sailun I prefer to use the information published by Saiun tire company. The tire with Part Number 5540993 is an ST type and Sailun identifies it as design S637T not S637 We need to be careful when ordering tires.
  13. First off. Not "nearly all" tire companies make ST type tires with Goodyear being the only "major" tire company that does. If your RV manufacturer indicated LT235/85R16 LRE on the certification sticker aka "Tire Placard" Then that should be ok but it might just meet the minimum requirements, so an alternative might be reasonable to consider. Not sure about going to a "Traction" tread pattern. Usually those tires have deeper tread which means more heat which is not good. It would also help if you could tell us your actual scale weights for each tire position or at a minimum the actual scale weight for each axle. The Stated GAWR from the sticker would also be helpful Not sure what the Goodyear "LR" construction is. Almost all modern radials have steel belts so there might be some confusion. I did not look up all the tires on your list but I do not think any are "all steel" construction. I believe there are Sailun S637 and S637T which are not the same tire. the S637 smallest is a 17.5 rim tire and are "Commercial" grade truck tires. The S637T is their HD "all steel" trailer tire. You need to be careful and very specific when ordering tires or you may not get what you think you are ordering. With a little more information (weights) we should be able to offer additional suggestions. Would the Discount tire guy explain why he would not put the same size / Type/ Load range tire back on the RV?
  14. Are you sure? So you say your tires are out of balance. You Sure that's the reason for the bad ride? Maybe you need a more experienced tire tech.
  15. Sorry, but I have no specific info. If Fuel Economy is important to you I suggest you research EPA "Smartway" certified tires. The major brands identify these tires in their data book as being compliant with the EPA and CARB requirements for better fuel economy. Your tire size may limit your choices.
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