Tyre Pressure
#1
06-16-2015, 01:50 AM
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Tyre Pressure
I have a 2012 Ford F 450 dually and will be traveling to lawn Hill towing a 25ft 4.2 ton van,there is 45klm of dirt corrugated road and i will need to drop tyre pressure is there a scale anybody uses to work out how much you drop out of your tyres.
The tyres i have on the the truck are B F Goodridge 245x75x17 and i run 60psi in the front and 50psi in the rear.
Cheers
Baker
The tyres i have on the the truck are B F Goodridge 245x75x17 and i run 60psi in the front and 50psi in the rear.
Cheers
Baker
#2
06-16-2015, 09:49 PM
It does comes down to how fast you are travelling and how hot it is.
Your regular pressures are on the low side - particularly while loaded. I would leave them be.
I use this as a rough guide for mine, which is from my parents Camper (same E-rated tyres)
Your regular pressures are on the low side - particularly while loaded. I would leave them be.
I use this as a rough guide for mine, which is from my parents Camper (same E-rated tyres)
• Highway @ 6500 Kgs. Front 70-75 PSI / Rear – 75-80 PSI
• Dirt Roads @ 6500 Kgs. Front 60-65 PSI / Rear – 65-70 PSI
• Off Road / Mud @ 6500 Kgs. Front 55-60 PSI / Rear – 60-65 PSI
• Beach Sand @ 6500 Kgs. Front 50-40 PSI / Rear – 55-45 PSI*
*Lower pressures may be needed in very soft sand. 20-25 PSI but speed must be kept very low and tyres re-inflated when conditions clear.
• Dirt Roads @ 6500 Kgs. Front 60-65 PSI / Rear – 65-70 PSI
• Off Road / Mud @ 6500 Kgs. Front 55-60 PSI / Rear – 60-65 PSI
• Beach Sand @ 6500 Kgs. Front 50-40 PSI / Rear – 55-45 PSI*
*Lower pressures may be needed in very soft sand. 20-25 PSI but speed must be kept very low and tyres re-inflated when conditions clear.
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