Tire inflation
Got E rated tires installed, 80psi max, Tire guy said it would be better to run around 65-70 psi as tires heat up. Always thought I should run max cold rating 80psi. FW weight is around 9000 lbs hooke...
Forum Discussion
Shoe2728 wrote:
I had St 235 80R 16E went to BF Goodrich Commercial T/A All-Season 235 85R 16E GVW of FW is 12000. I have looked for a pressure weight table but mostly all I fine is max inflation rate is 80 psi. I have a 2011 crossroads cruiser 305skp
In next list from goodyear the 80 psi gives fat printed 3042 lbs maximum load. But dont use this list for determinating needed pressure.
Goodyear list only to determine maximum load,
This is for all brands the same so can be used to determine the maximum load of your tires too.
This is between Loadindex 119 and 120 , European system would give it as 119 with 2998 rounded 3000 lbs maximum load.
Will give picture of part of my made extra save pressure loadcapacity lists.
The little lower maximum load of 119 Loadindex is no problemm.
Compare it with the Goodyear list and see the differences .
Here a picture of that list too with again your tires sises highlited.
With your 12000lbs GVW with minimum 10% pinload ( or whatever you call it) I would use this for reserve and devide 12000/4( tires)=3000 lbs a tire ( asuming 2 axles and not dual load).
This would need the 80 psi and for the ST old 65 psi .
Because its about the maximum load of the tires.
You can even add up to 25% for a trailer with no living stock in it, to the real load a tire for reserve and still no bumping so screws tremble loose. This would calculate 12000-10%= 10800/4= 2700lbs+25%=3375lbs a tire wich would need 90 psi with my made list, and is allowed by most tire makers that 10 psi going over AT-pressure.
Ofcource also mind the rimms to being allowed that pressure.
See post above this of mine about it.
