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Recent content by gunyu

  1. gunyu

    Truck tyre wear

    I think this would be really the end of this topic/conversation...so I would like to thank you for your support, and all comments and infos here! Yeah...I do my best to collect data, of course the company collaborates with tyre manufacturer...(but we just beat around the bush...yet...so firstly...
  2. gunyu

    Truck tyre wear

    That's ok, i'm concidering the subjected chart(s) of course not with enduser's eyes, so I1m not a fleet owner, or truck driver, or worst: salesman....:)...I'm a mechanical engineer, working in development segment, but not tyre expert...:)...so I desided to write here to gathering data, searching...
  3. gunyu

    Truck tyre wear

    Oh..thank you for the answers... I really don't know, maybe we misundersood each other in a probably important detail...so about the "load charts": so this is a table, titled as "Load and inflation pressure chart for single fitment use". And in headlines it contains loads (vertically), and...
  4. gunyu

    Truck tyre wear

    Ohh gosh...sorry, but there is no post editing possibilities here...so... Let's say that I have this speed connected load/pressure table (chart), and load/deflection pressure curves (as I do already).... So If I understend your words correctly, than you say, that in the load/pressure table...
  5. gunyu

    Truck tyre wear

    Sorry, for the second quote questions: I know, that there are ETRTO,JATMA, TRA etc. regulations accordingly, but they gives only speed/max weight rate (as you can increase the load as the speed reduced, and this regulation applies percentages for given speeds...), but obviously this regulations...
  6. gunyu

    Truck tyre wear

    Hello, and thank you again. As I wrote, they are NOT the SAME curves, they only similar/analogue, and they only proves for you, that this kind of curves do exist... And, yes, they are for only a specified tyre (from one manufacturer identical products, as I wrote:"the subjected curves are...
  7. gunyu

    Truck tyre wear

    Thank you so much again for your answers CapriRacer! First of all, yes, the data above just examples from the chart... About the "optimum pressure": Yes, you have right, maybe I should rethink my previous theory about the optimum pressure. Exactly this is why I'm typing in this forum, and...
  8. gunyu

    Truck tyre wear

    Thank you the quick response. I see some misunderstanding belongs my post...sorry for that... So I can measure (or calculate) the theoretically optimum pressure in tyres, based on the above mentioned curves, provided by manufacturers. So I can tell you, that for example a 385/65 R22,5 160K...
  9. gunyu

    Truck tyre wear

    Hi again, I forgot to mention, I've found, that Schallamach calculated only with "wheel stiffness" in tyre wear topic, and according to Kraghelsky and Nepomnyashchi complex formula the tyre wear rate is an exponential function of the length of contact area, but these formulas maybe outdated, and...
  10. gunyu

    Truck tyre wear

    Hello Experts! I'm looking for conection between the tyre traction (contact surface) and tyre wear in function of tyre deflection and tyre inflation pressure of truck (truck tractors). I've seen some tyre specification of a manufacturer, where they give radial deflection versus radial force for...
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