A Hamilto wrote on Tue, 08 November 2016 13:57
> TR 1 wrote on Tue, 08 November 2016 13:24
> > ...I feel running the steel tire adds something to my margin of safety, and is relatively easy and inexpensive to do.
> > ...the prospect of a tire failure keeps me up at nights.
> Not all of us are all-knowing about tires. How is a steel sidewall tire more safe than a ragwall? The vast majority of folks that have used steel
> sidewalls say the handling is atrocious. Also seems like an underinflated steel wall will blow out sooner than an underinflated poly side wall.
>
> What is the great fear of a tire failure? Safety or bodywork? Folks here have blowouts and even wheels come off axles of their GMCs and I am not
> aware of an injury or death as a result. Worst case is they have to be towed someplace, more often it is just a tire change and on their way.
>
> If you have a deathly fear of changing a tire on the side of the interstate, use your auto club policy to send someone out to do it, or get it
> hauled off the interstate and change the tire when/where it is more safe.
I don't claim to be all knowing about tires, that's for sure, but I am a pretty avid hobbyist when it comes to cars and trucks, and for me, tire
choice is an important facet of how I enjoy my vehicles. I currently own cars with tires that range from R Compounds on one end of the spectrum, to
All Terrains on the other, and quite a few types of tires in between.
My fear is rooted in the safety aspect of the discussion. I have no problem repairing any body damage due to a blowout, and in the past, I've changed
out a transmission on the side of the road, so changing out a tire is not a problem. It's also not alack of confidence in my driving ability... I
don't race my cars, but I take them to the racetrack several times a year for "HPDEs", I also like driving off-road, and I've had my pilots license
for over 10 years now. While some of those things have a higher level of risk, I'm obsessive about making them as safe as I can. Because sh_t can
and does happen, no matter how prepared you are.
I agree with you, that the risk of damage and blowout when a steel sidewall tire is underinflated is higher than a ragwall. However, that argument
kind of reminds me of how many OEMs are not including a transmission dipstick on newer cars, because the risk of damage from incorrect maintenance is
higher than the likelihood of a problem stemming from incorrect fluid levels. I prefer having the dipstick, and will accept the consequences if I
screw up the maintenance. Same goes for tires. If I need to replace one due to underinflation, then I will.
From my research and my personal experience, in situations where it is hot, you are carrying a load, and driving at high speed, a steel sidewall tire
will outperform a ragwall, on tires of similar quality. Again, I am not an expert, but my understanding of tire dynamics is that a stiffer sidewall
flexes less, and will generate less heat which is generally the cause of most blowouts. Also, even though technology is catching ragwall strength up
with steel strength, (I believe Goodyear has an aramid belted tire) if I put a wheel off the road or hit some debris, a steel tire is going to take
that abuse better than a ragwall.
Most of my trips taken and planned for the future, are west of here, and take place during the summer. West Texas is tough on tires. When it's 107,
you're driving on a highway with an 80mph speed limit, and are in the middle of the county of nowhere, I can almost guarantee you pass at least 1 car
or truck that has had a blowout, if you're on a trip of any distance. Also, there's a lot of heavy industry here, with all the oil and gas
production. I used to live in the northeast, and getting a flat there was rare. In the years I've been here, I've pulled all manner of hardware,
angle iron, metal shards, you name it out of tires --both on the tread, and embedded in the sidewalls.
And while I haven't driven a GMC with ragwalls, I have driven a lot of vehicles, and the XPS Ribs really do handle well on my rig. And if you look at
the review on tirerack, they say the same thing about that tire on all manner of heavy vehicles.
Bottom line is you should make an educated decision on what tire to run based on your use of your vehicle, your tolerance of risk, and your
experience. If I lived in the northern part of the country, and took shorter trips, I would probably have a different opinion on what tire to run.
But for my situation, I find the benefits of an all steel tire to be of value. Again, (no pun intended) your mileage may vary ;)
--
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX