Report says big rig tires can’t handle more than 75 mph

Hate to tell them, some car tires aren't rated for that either. But it doesn't matter.

Beginning in 1991, the speed symbol denoting a fixed maximum speed capability of new tires must be shown only in the speed rating portion of the tire's service description, such as 225/50R16 89S. The most common tire speed rating symbols, maximum speeds and typical applications are shown below:
[TABLE="class: techrows"]
[TR="class: grey"]
[TD="width: 15%"]L[/TD]
[TD="width: 20%"]75 mph[/TD]
[TD="width: 20%"]120 km/h[/TD]
[TD="width: 45%"]Off-Road & Light Truck Tires[/TD]
[/TR]
[TR]
[TD="width: 15%"]M[/TD]
[TD="width: 20%"]81 mph[/TD]
[TD="width: 20%"]130 km/h[/TD]
[TD="width: 45%"]Temporary Spare Tires[/TD]
[/TR]
[TR="class: grey"]
[TD="width: 15%"]N[/TD]
[TD="width: 20%"]87 mph[/TD]
[TD="width: 20%"]140km/h[/TD]
[TD="width: 45%"][/TD]
[/TR]
[TR]
[TD="width: 15%"]P[/TD]
[TD="width: 20%"]93 mph[/TD]
[TD="width: 20%"]150 km/h[/TD]
[TD="width: 45%"][/TD]
[/TR]
[TR="class: grey"]
[TD="width: 15%"]Q[/TD]
[TD="width: 20%"]99 mph[/TD]
[TD="width: 20%"]160 km/h[/TD]
[TD="width: 45%"]Studless & Studdable Winter Tires[/TD]
[/TR]
[TR]
[TD="width: 15%"]R[/TD]
[TD="width: 20%"]106 mph[/TD]
[TD="width: 20%"]170 km/h[/TD]
[TD="width: 45%"]H.D. Light Truck Tires[/TD]
[/TR]
[TR="class: grey"]
[TD="width: 15%"]S[/TD]
[TD="width: 20%"]112 mph[/TD]
[TD="width: 20%"]180 km/h[/TD]
[TD="width: 45%"]Family Sedans & Vans[/TD]
[/TR]
[TR]
[TD="width: 15%"]T[/TD]
[TD="width: 20%"]118 mph[/TD]
[TD="width: 20%"]190 km/h[/TD]
[TD="width: 45%"]Family Sedans & Vans[/TD]
[/TR]
[TR="class: grey"]
[TD="width: 15%"]U[/TD]
[TD="width: 20%"]124 mph[/TD]
[TD="width: 20%"]200 km/h[/TD]
[TD="width: 45%"][/TD]
[/TR]
[TR]
[TD="width: 15%"]H[/TD]
[TD="width: 20%"]130 mph[/TD]
[TD="width: 20%"]210 km/h[/TD]
[TD="width: 45%"]Sport Sedans & Coupes[/TD]
[/TR]
[TR="class: grey"]
[TD="width: 15%"]V[/TD]
[TD="width: 20%"]149 mph[/TD]
[TD="width: 20%"]240 km/h[/TD]
[TD="width: 45%"]Sport Sedans, Coupes & Sports Cars

[/TD]
[/TR]
[/TABLE]

 

Why doesn't this surprise me?

Are they speaking retreads or virgin? (Or does it matter?)

 

The set of virgin Firestone drive tires of have on my truck say point blank on the tire, no more than 75.

 

I watched a report about this on Good Morning America I believe.

 

No surprise to me. But this should be no secret to anyone. Some truckers know their tires can NOT handle those speeds, some (a small few) have tires that can handle those speeds, and some don't have a clue wether or not they can handle it those speeds. And, I agree. Probably 30% of car tires out there running 80-85 on the toll road around Austin are not doing so safely, either.

How many blown carcasses do you see on the downhill side of nice down grades? Especially in hotter months.

I guess the question is what are they planning on doing about it? Nothing I suspect.

 

my t600 with kelly tires and rated up to 75 mph.

 

File another report stating something blatantly obvious.

 

75 is a bit fast for me, thanks.

I can count on one hand the number of tires I've had blow in 10 years - none of them steer tires either. That's all at 65 or below.

Old Kiwi PSA - The faster you go, the bigger the mess.

 

The Michelin steers I have are only rated to 75 mph as well.

Personally I dont run that fast. I have on occasion taken it up to 75 mph before a hill. But extremely rare. Usually barely make it to 70 mph before the hill catches me LOL.

Hurst