Inflating tires 10lbs over?
Sorry to do this, as I am sure it has been discussed a lot - but my searches came up dry... So there was advice floating around on a past boat forum that properly inflated ST tires were rated for a...
Forum Discussion
Old-Biscuit wrote:AH64ID wrote:
Quite a few people commenting in this thread that should read the service buletien from Goodyear before they comment on Goodyear ST tires.
AFIK Goodyear is the only only with a bulletin allowing pressure to go higher than the sidewall rating and faster than the ST standard speed limit of 65.
Goodyear doesn't state 'sidewall pressure'
They state 'trailer placard for normal inflation and load conditions.
Cold MAX PSI on sidewall is just that.........MAX PSI COLD Inflation
If Goodyear tires, with the ST designation, are used at speeds between 66 and 75 mph (106 km/hand 120 km/h), we recommend the cold inflation pressure be increased by 10 psi (70 kPa) above the recommended pressure based on the trailer placard for normal inflation and load conditions
It doesn't state do not exceed max side wall pressure at all!
It's very simple actually. 10 psi above the required pressure for normal load and inflation. If the tire holds 2540 @ 65 psi then you can go to 75 psi for 2540 lbs at 75 mph. That is 100% inline with the buliten and no interpretation is required .
If they didn't want you to exceed sidewall pressure it would state increase the cold psi up to sidewall max pressures, but it doesn't.
I have never seen a trailer with a different load sticker than the OEM tire load and sidewall numbers. My OEM tires were marathons and the trailer sticker matches the sidewall, meaning 75 psi if you go by the Goodyear information. Like I said, ZERO interpretation required.
Additionally the bulletien tells the consumer not to exceed wheel and valve stem ratings, but nothing about max tire pressure.
