I plan on adding a set of 305/70/r16 tires on my 4x2 with some 3.5 in spindles and 2inch blocks in the rear, and I went to get some opinions on these tires from some friends in the auto business. They said that they are great tires both on and off road but if you happen to hit 90 mph with these tires the tread separated from the tire!! Any body know anything about this or can offer me some more informed advice, I love my friends but you can't always trust everything they say.

 

I have the limiter in my truck, but anyways I had to teach one of those tailgating a@#holes a lesson so when he tried to pass me I floored it and pretty soon we were going over 90mph. I hit the limiter and kept it there for about 30 seconds. I have no premature wear on the tires and they certainly didnt come apart. I hope this helps.

 

I've had mine over 100 before with the superchip and no tread separation in the least bit and I kick the crap out of them offroad.

 

I have sold a few sets of MT/Rs now and haven't had any complaints like that. In fact that is what I will be going to if these BFGs will ever wear out!!

 

I really wouldn't recommend high speeds with a mud-terrain tire, it's just not meant for that type of speed and I wouldn't doubt it if the tread separted at that speed. Glad to hear you guy's have had good luck going that fast though, I certainly wouldn't want to go over 70 mph in my truck.

-Kelly

 

i'm with whiplash on this one. why anyone would buy a 4X4 truck to run 90+ i'll never know. sure, the baja racers do it all the time. but, i believe there is a vast difference in their trucks and ours. to make a point though, i have noticed several of the baja race trucks running mt/r tires. i think you're friends are pulling your leg. good luck, Rich.

 

does whiplash make a 10" lift for a 99, 2 weeldrive f150??

 

again, I wouldn't be surprised at all. For that matter, that goes with any "standard" tire (non-speed rated). Think physics, (I know, here we go again) as the tire spins faster and faster, centrifical force wants to "round" the tire out, or make it bulge in the center more. Now, speed rated tires, being H or higher, have a different casing construction, along with things like nylon belt caps, spiral wound casing, bead tension structures which all work together to keep the tire from doing just that. Thats why, other than handling better, a speed-rated tire is capable of going faster. Most standard passenger tires are rated in the 80-90mph range, and I'd say big mudders like you guys are running would qualify for that.
In short (too late for that), just be careful. They're not meant to go that fast, and if you plan on driving that fast, you need to put more air in the tire, helps to stiffen up the casing. just be safe guys, but of course, enjoy your trucks!

 

With an aggressive tread pattern, you are going to generate more heat in your tires, number 1 killer of tires and maybe you!!!!!

 

never had this problem. had my truck over 90 many of times

 

All i know is that the goodyear MT/rs are the used on a majority of the winners in the SCORR and CORR racing circuits. I know they can get over 90 mph and they are not easy on the tires. The only big difference is that dirt tracks give a bit more than pavement.

 

I found some info. It seems like the first few production runs may have been rated at a P and Tirerack.com says current tires are rated around QR. P is 93 mph so if this is the case i can see why some tires might fail.