what's the speed rating of load range D and E tires?
 

What's the speed rating of load range D and E tires?

Thanks,
Sixto
87 300D

Speed is in the area of 45 mph. What on earth do you have these on???

What? D ratings are usually 2500lbs each and E's 3000lbs each. No idea on the speed rating but it is certainly higher then 45mph. Certainly 20mph over any posted limit wouldn't be a problem. These are standard equipment on 3/4 and 1ton pickups. I like the E's myself but I am loaded and towing most of the time. RT

He's putting them on the W124...........it's a bit too fast for him.........:D

Don, I believe that would not be correct. E and D tires are Light truck tires. E are 10 ply D are 8 ply. Probably most full size pickups come with them new. I do not know the speed rating but I believe if you poke around the internet you might find it. http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=55 ***ON EDIT seems like everyone replied at once***

I have D's on my Powerstroke and my wife drives that sucker ALOT faster than 45 MPH:D

The ones on my Ford are E rated - 3450# capacity, 1 ply nylon and 2 ply steel tread. I think they're good for 105 MPH.

Suspect he is planning on selling it and wanting a taller tire to broaden its market appeal to the local hispanic community. Around here they're in love with old sedans set down on top of 22" rims.

There is no direct relationship between speed ratings and load ratings.

M 81 mph 130 km/h
N 87 mph 140km/h Temporary Spare Tires
P 93 mph 150 km/h
Q 99 mph 160 km/h Studless & Studdable Winter Tires
R 106 mph 170 km/h H.D. Light Truck Tires
S 112 mph 180 km/h Family Sedans & Vans
T 118 mph 190 km/h Family Sedans & Vans
U 124 mph 200 km/h
H 130 mph 210 km/h Sport Sedans & Coupes
V 149 mph 240 km/h Sport Sedans, Coupes & Sports Cars

Found one site that stated a D tyre is rated at 40 mpy but it don't want to copy and paste

Load range D tires are commonly found on 1/2 ton pickups. When is the last time that you saw an F-150 driven by a good ol' boy at a speed under 80 mph?

Man. I am really confused now and it is too cold and dark to go outside and check my vehicles

I believe this statement to be correct. For example I THINK that if you look at the tire you might see 235/85/R16. I believe that the "R" would be the speed rating of 106mph. Be by all means google it or use the Tire Rack website. Lots of info there.

Load is not the same as Speed rating.

Our Chevy HD has load range E rubber on 18.5" rims. The speed rating appears to be R. I didnt see a traction rating anywhere.

the W123 needs H rated tires for some stupid reason

It's beginning to look like D and E are strictly load ratings.

D and E are strictly load ratings. Light truck tires do not carry speed ratings. I suppose that a manufacturer could voluntarily label then, but to my knowledge, none do. There are A,B, and C load ratings also, but they're much more rare.

And the "R" in 265/75R-16, is for "Radial".

I do not believe that it is mandatory to give a tire a speed rating, last I checked, there were tires that had none. If the tire does carry a speed rating, it will be in the tire's service description. Like one of the following examples:

205/60HR-15

205/60HR-15 89H

205/60R-15 89H

In these examles, the speed rating is shown in bold, and is "H", good for 130 mph. Note how in the last two examples, the tires load rating is shown by the number "89". Passenger car tires use a number for their load ratings, as opposed to the letters of light truck tires. Don't ask me why it is so, as that I don't know...

MV

Didn't they mandate a minimum 85 mph speed rating for all highway tires years ago? Seems to me it came out back in the early days of radials in the US. After a rash of Firestone tires came apart on cop cars that were chasing good-ole-boys on bias-ply tires. Unfortunately, I think a few cops died in nasty crashes before they wised up that somebody was not doing a good job of making radials. Handled great till the heat built up, then BAM, tire came apart at speed.
To test and rate tires, they run them against a moving drum, at ever increasing speed. Tires have to be able to withstand nnn speed for a sustained period of time to be labled rated for that speed.
This is why I pay the most attention to the second letter in the UTQG rating. It is a measure of a tires resistance to heat buildup. get "A" rated whenever possible. Never less than "B".
I think you will find all tires in this country are rated for at least 85mph. My truck came with a warning to not excede 85 mph, regardless of speedlimits. I expect this was because they did not know what truck tires I would put on it, but they knew all tires were good for 85.

good post