40 PSI and two blown tires in one week!

[rmay635703]

Originally Posted by Xist

What is a microfilm?

LoL, go to an older library.

[car guy]

Measure pressure when COLD, not after driving, but first thing in the morning. There are 2 tire pressure recommendations on any car:
1) Car manufacturer sticker located on the "B" pillar (between front and rear doors on driver side. This is the pressure recommended for the original tire size (e.g. 205x50x16) which is also on this sticker. This is for "best ride characteristics”… suspension is tuned for this setting. My opinion from testing, this doesn’t result in best mileage or wear.
2) Min – Max pressure on the tire sidewall. Tire manufacturer rating based on tire construction.
I set cold pressure exceeding tire max on sidewall by 5%. Why? When driving, tire sidewall flexes (squashes) between road surface on each revolution, causing heat. More pressure = less squash = less heat. Heat is calories (energy) and all energy comes from gasoline. I believe I get better mileage. I have never had a blow-out. Heat also warms the rubber and therefore accelerates wear. Tires wear on edges because each turn causes the outside tire to roll under to some degree. More pressure reduces “roll under” and therefore reduces edge wear.
So I feel the bumps a little more but save cash on tires and gas. Just another opinion, if you get my meaning.

[TheEnemy]

I have had 4 blowouts in 13 years on my pickup. Two were Firestones and went for no apparent reason, the other two had some kind of damage such as a nail that cut the sidewall or a sharp rock puncturing the tread.

The only time I replaced tires before they were worn out or flattened was when I got a set that two of them would go severely out of round above 65mph and rattle the truck rather violently. They were rated for 50psi, I kept them at 45. It cost me an additional $300 in repairs because of the vibration. That was the last time I bought cheap tires.

Typically I run them till they start dry rotting, or the tread gets down to the wear markers.

[slowmover]

Originally Posted by rmay635703

LoL, go to an older library.

A what?

[Xist]

Originally Posted by slowmover

A what?

Oh right. I just understood "older" and lost interest. That other word must be ye olde english or.

Back to YouTube...

[Joggernot]

The only blowouts I've had recently were after moving from DC to NM. Bought tires in DC and they worked fine out there. After the move we drove to El Paso, TX (170 miles) twice and blew a tire both times by throwing a tread. Seems the heat in TX was too much for the DC tires. Upgraded the heat/speed rating and didn't have a problem.

[j12piprius]

Causes of dry rotted tires

How to tell if tires have dry rot

[California98Civic]

Originally Posted by johnlvs2run

Causes of dry rotted tires

How to tell if tires have dry rot

I run 60psi and have yet to have a failure, even when I had old tires, partly because of luck and partly because I frequently inspect the tires. I have twice taken old tires out of commission because they were clearly on their way to failure.

james

[MobilOne]

re: the ehow site referenced above: I greatly dislike (make that despise) the ehow site because one has to wade thru way too much crap to get the general info on a topic! My rant for today.

[California98Civic]

Originally Posted by MobilOne

re: the ehow site ... one has to wade thru way too much crap to get the general info on a topic! ...

eHow site simplified: (1) look for cracks on side of tire, (2) look for cracks on tread of tire, (3) if cracking, replace the tire.