Quest. Re. Tires...Yes, I know...another one!
My tires are Goodyear 245/70R/19.5. After weighing, I'll be running 90 psi in each tire. I see on the Goodyear Load/Inflation Chart that there are some weights that are in bold print with a letter fol...
Forum Discussion
Tireman9 wrote:goufgators wrote:
My tires are Goodyear 245/70R/19.5. After weighing, I'll be running 90 psi in each tire. I see on the Goodyear Load/Inflation Chart that there are some weights that are in bold print with a letter following: For example: 4080(F). I assume the "F" is a 'load rating' ??. My tires, however, are "H' rated which is not even shown on the chart. Are these letter ratings indications of the tires number of plys? Also, do I ignore the fact that my "H" rated tires are not even shown on the chart and still go with the 90 psi indicted by actual weight? Thanks, Larry
They show bold to help you see the max for that Load Range. The Letters E, F, G are the "Load Range" not load rating. "Load Range" replaced Ply rating many years ago.
What design are your Goodyear tires? G670 RV ?
It appears that Goodyear has not updated their web pages as I do not find a LR-H listed.
You didn't say what your measured load was for the heaviest end of each axle. If the heaviest loaded tire is 4190# single or 3970 in dual than 90 would be the minimum cold inflation.
I suggest you run an extra 10% ( 9 psi) so you don't have to adjust inflation based on changes in ambient temperature.
At what ambient temperature should that adjustment be set if one drives from -30F to 90F?
