Tires

Question 101
Posted by Rod on October 18, 2005

I want to save as much gas as i can with highway driving.
Can I install one or two sizes higher without hurting anything besides my speedometer, and will it actually save gas? Thank you!

Question 102
Posted by Michael on October 16, 2005

I recently had the front end on my tractor rebuilt and 3 axle laser alignment done.New 24.5 Lo Pro Bridgestone R-280 tires were installed as were new gas charged shocks all around.The tech checked everything pertaining to the front and rear suspension and it was all O.K. I had the front tires balanced and use Centrimatics all around.There is a vibration at 65 mph to 75 mph that feels like an out of balance tire.There is 110 lbs air in the front and no irregular wear.Kingpins, shackles and bearings are tight.What could this be?

Question 103
Posted by davd on October 13, 2005

I changed all 4 tires 4 days ago, and one of them (left rear) went flat on me today after hard break. I went back to shop to see if there was any holes, but there wasn’t. Do you know what could have caused the leakage of air without the holes to leak? ( My tires didn’t hit anything either)

Question 105
Posted by James on October 9, 2005

Temperature versus air pressure. You indicate that commercial truck tires gain 2 lbs in every 10 degree increase of tire temperature. When I lived in the desert southwest (Vegas) our then maintenance person advised us that we needed to increase tire pressure by 5 psi over standard inflation pressures when outside temperatures exceeded 90 degrees. Even now living in Indiana I still practice that today. If steers called for 110 psi, I inflate to 115 psi, 105 psi for trailer tires got 110 psi. However back to the desert, if we increased pressure to 5 lbs psi over standard and surface temps on the pavement are 140 degrees or higher, that must be alot of pressure in those tires. How much air pressure over whats printed on the sidewall can a tire take before it explodes? And is over-inflating by 5 psi hurting the tires? The commercial tires I refer to are the 22.5 and 24.5 truck tires. Side note: We also tested like tires manufactured in Japan which had a tire pressure of 130 psi. First time I aired one up it scared the b-jeebers out of me. How much punishment can these tires really take before they blow?

Question 106
Posted by Ron on October 8, 2005

I work for a software company with literally hundreds of fleet clients. Many of them would like to track tires for a variety of reasons, but the industry does not provide a unique part identifier number on each tire. What options do my fleet customers have in terms of tracking individual tires by a unique number so they can effective manage their tire programs?