Blowout at 70 mph
We experienced a drivers side front wheel blow out at 70 mph Wednesday going north on US 59 towards Houston after passing a vehicle. The tire blew out about a baseball sized section of sidewall with a...
Forum Discussion
Both hands firmly on the wheel (unless you are drinking or eating), safe speed, and steering control stabilizer such as Saf-T-Plus in place.
I jest about the eating and drinking.
I have never experienced a front tire blowout and hope to never. I have had several rear tire blowouts while loaded heavy and empty.
Weighed my 2003 Expedition this morning. Full fuel, water, and kitchen ware.
Front axle: 7,040 lbs.
Rear axle: 14,380 lbs.
The Yokohama calculator linked below suggested 80 psi for each tire.
265R75 22.5 Load Range G
http://www.yokohamatruck.com/commercial/tire-tools/inflation-pressure-calculator
Using my formula obtained from Michelin:
Formula: (( Axle Weight / # Tires ) / Tire Rating ) x Max. Pressure Rating = Recommended Tire Pressure
Rear Axle: (( 14,380 /4 ) / 5,510 ) * 120 = 78.29 psi
Front Axle: (( 7,040 / 2 ) / 5,510 ) * 120 = 76.66 psi
80 psi works! Add approx. 10% and 85 psi works too!
I jest about the eating and drinking.
I have never experienced a front tire blowout and hope to never. I have had several rear tire blowouts while loaded heavy and empty.
Weighed my 2003 Expedition this morning. Full fuel, water, and kitchen ware.
Front axle: 7,040 lbs.
Rear axle: 14,380 lbs.
The Yokohama calculator linked below suggested 80 psi for each tire.
265R75 22.5 Load Range G
http://www.yokohamatruck.com/commercial/tire-tools/inflation-pressure-calculator
Using my formula obtained from Michelin:
Formula: (( Axle Weight / # Tires ) / Tire Rating ) x Max. Pressure Rating = Recommended Tire Pressure
Rear Axle: (( 14,380 /4 ) / 5,510 ) * 120 = 78.29 psi
Front Axle: (( 7,040 / 2 ) / 5,510 ) * 120 = 76.66 psi
80 psi works! Add approx. 10% and 85 psi works too!
