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I made the mistake of buying the Cooper Discoverer ATP instead of the Cooper Discoverer AT3. The ATP bounces like crazy on my long bed SuperCrew. I should have stayed with the AT3s it had on before the switch since it wasn't bouncing with the AT3.
The new ATPs look nice and have a pleasant tread pattern. The new ATPs bounce like crazy at 45mph and above, even at highway speeds. All the fat is jiggling so much it causes you to break out into laughter! The old AT3s were starting to have some tread separation but they did not bounce!
You have to remember the rear wheel hop our trucks have. I really don't remember it when I first bought my truck and it had the stock Michelins on it.
But when those wore out before 40k miles, I bought a cheap set of Nankang all terrains. They were great in the snow and had the severe snow rating. But they were horrible as I felt the rear wheel hop at 45 and at 70. The place I bought them from replaced the two rear tires but to no avail. And that was after two visits to tire shops. What I'm trying to say is maybe that's what you are experiencing. There are threads here at FTE on this subject.
Maybe the sidewalls are to stiff and the road not as smooth as one would think. The stock tires have a softer sidewall because it helps with ride quality.
Maybe the sidewalls are to stiff and the road not as smooth as one would think. The stock tires have a softer sidewall because it helps with ride quality.
I was told by my friend in the tire sales business that the rumor has always been that the difference between two exactly the same tires, one marked OEM and the other not, is the OEM is apparently made with softer rubber. And it costs more.
Just got back last night after putting about 600 miles on the new tires. I drove up into the mountains to do some scouting in my hunt area, and I was towing my small Jayco Baja travel trailer that weighs 3500lbs and had about 1000 lbs in the bed of my truck. A lot of that weight was my atv. Tires did great. They were pretty quiet until I left the mountains gravel and dirt roads, which is when I found out these tires picked up quite a few rocks. Eventually they cleared the annoying ones though. Traction was good in the gravel and dirt. One example, to get turned around at the spot I was going to camp, I needed to back my trailer and truck's rear wheels over a bank (one reason for the Baja trailer, higher clearance), and then pull it up the bank as I pointed the truck back out the way I came. The tires grabbed the dry dirt, slight mud, and vegetation, and I walked the combo up the grade in 2wd. Pic included looking up the bank for reference. The trailer came over the bank centered about where the yellow generator is sitting.
I did find one attribute that was different than the OEM Michelins. While driving on paved roads, sometimes I felt the truck responded more "quickly" to turns and steering adjustments. Hard to describe, but I might almost describe the feeling as a little more like a softer suspension. It felt unusual to me, but if I just ignored the feeling the truck needed no additional steering adjustment to compensate. I wonder if the AT3 sidewalls are a little softer than the Michelin's. Otherwise the tire's manners on all types of mountain paved roads and freeways speeds up to 80mph were quite good, Not sure yet if I notice a fuel mileage difference. I got a avg 12.2mpg on this trip that included a wide variety of driving conditions.
Just got back last night after putting about 600 miles on the new tires. I drove up into the mountains to do some scouting in my hunt area, and I was towing my small Jayco Baja travel trailer that weighs 3500lbs and had about 1000 lbs in the bed of my truck. A lot of that weight was my atv. Tires did great. They were pretty quiet until I left the mountains gravel and dirt roads, which is when I found out these tires picked up quite a few rocks. Eventually they cleared the annoying ones though. Traction was good in the gravel and dirt. One example, to get turned around at the spot I was going to camp, I needed to back my trailer and truck's rear wheels over a bank (one reason for the Baja trailer, higher clearance), and then pull it up the bank as I pointed the truck back out the way I came. The tires grabbed the dry dirt, slight mud, and vegetation, and I walked the combo up the grade in 2wd. Pic included looking up the bank for reference. The trailer came over the bank centered about where the yellow generator is sitting.
I did find one attribute that was different than the OEM Michelins. While driving on paved roads, sometimes I felt the truck responded more "quickly" to turns and steering adjustments. Hard to describe, but I might almost describe the feeling as a little more like a softer suspension. It felt unusual to me, but if I just ignored the feeling the truck needed no additional steering adjustment to compensate. I wonder if the AT3 sidewalls are a little softer than the Michelin's. Otherwise the tire's manners on all types of mountain paved roads and freeways speeds up to 80mph were quite good, Not sure yet if I notice a fuel mileage difference. I got a avg 12.2mpg on this trip that included a wide variety of driving conditions.
are you talking about your new tires? I think I know the feeling you’re talking about but maybe not. Try playing with the tire pressure? I find mine are happiest between 50-60 lbs of air. When not towing I’ll run 45 up front and 40 rear, when towing 60-65 at all 4 corners.
are you talking about your new tires? I think I know the feeling you’re talking about but maybe not. Try playing with the tire pressure? I find mine are happiest between 50-60 lbs of air. When not towing I’ll run 45 up front and 40 rear, when towing 60-65 at all 4 corners.
Yes, running the new tires, and I ran them at the Ford recommended pressures of 65 front and 80 in the rear. You are running much lower pressures than anyone else I’ve known on their F250/350. I would think the lighter pressures would make the ride and handling while towing with a loaded bed even softer. I’m having a hard time wrapping my brain around your suggestion.
Osris is running to low a tire pressure. I bet his low tire light is on. I always run 65 80.all the time. I also rotate my tires at every oil change. and have them adjust the air at the same time.
Yes, running the new tires, and I ran them at the Ford recommended pressures of 65 front and 80 in the rear. You are running much lower pressures than anyone else I’ve known on their F250/350. I would think the lighter pressures would make the ride and handling while towing with a loaded bed even softer. I’m having a hard time wrapping my brain around your suggestion.
I have 53k on them right now and I’ll get at least 60k. Mine are rated at 4080 @ 80 psi so @ 40 psi each tire is good for 2040.
Originally Posted by The Bone
Osris is running to low a tire pressure. I bet his low tire light is on. I always run 65 80.all the time. I also rotate my tires at every oil change. and have them adjust the air at the same time.
you would lose that bet. I do rotate every 5k as well tho.
Yes, I've tried different tire pressures, taken them back to get them balanced a few times, rotated, etc. and nothing seems to fix it. Even hauling a load like our 5th wheel gets hopping sometimes. Running a higher tire pressure seems to reduce the bounce slightly, but it's still there. I've put on maybe 30k miles now but I'll be very happy to replace them next year.
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