2nd Gen Non-Engine/Transmission hoppy Toyo m55 and centramatic wheel weights

[Silver Bullet Ram]

I have hopping new tires, truck bounces up and down at 40 mph. Apparently I am not the only one who has experienced this. I read where some people have put Centramatic wheel weights on. I wonder if that will help the the wheel hop problem since it isn't really a vibration.



Gary

 

[tp0d]

Not to ask a stupid question, but were the tires and rims balanced? A hop could definetly be caused by that. Or you possibly have bad shocks, try bouncing your weight on one corner of the body and see if the truck stops right after you quit pushing, or if it keeps rolling, the shocks are bad. The centramatics are good, but all they do is cure an unbalanced tire/rim. .



good luck



-j

 

[Silver Bullet Ram]

tires and rims were balanced. Shocks are practically brand new and work fine, didn't start until the new tires went on.

 

[DHayden]

By looking at the video and hearing others centramatics may help you out but. . it seems like you have a bad underlying situation there that should be looked into if its that bad. I'd take it back to where you got it and see if you could get that one tire replaced and re-balanced.

 

[Ereynolds72]

I had a friend that put GY Wrangle ATS on his 2500HD Chevy 4x4 on the factory wheels. Those things bounced the whole time he had them. He took it back to the tire shop several times for re-balancing but they never could get them to stop bouncing. I don't know how he stood it but when he wore them out, he went back and put the same tires on again. These run smooth as silk. So what I'm saying is; worst case scenario may be that you may have gotten a "bad run" from the factory. I wouldn't let the tire shop off the hook until they get it right.



Are they on aftermarket wheels or factory wheels?

 

[nps]

My BFG 315's hopped. The tire shop did a road force test on them - all 4 failed and could not be made to pass.



All 4 replaced. Went through 6 tires to get 4 that would pass the road force test. No hop. Make em fix it.



If you are not familiar, a road force tester looks like an electronic balancer with a large cylinder mounted off of the tread face of the tire. The tire spins at a relatively low speed, and the cylinder is pressed into the tire to simulate the tire under load on the road. It'll find spots in a tire that balanced perfectly on a standard balancer.

 

[PLaFrombois]

I thought I read on the Centramatics site that you should remove the wheel weights. It also looks like they have some type of rim on their weight system. Are you supposed to have the rim of the wheel weight out against the wheel, or facing inside toward the brake? I don't think it'd make a difference, but it might be worthwhile to call about.



Paul

 

[AMink]

I had the same situation with my Big O 255/85's. It took 7 tires to get 4 that are good, and I'm not sure it they are yet. They road forced them and one came up at 98 lbs, one at 77 lbs. I don't know exactly what that signifies, but on that size tire anything over 40 lbs cannot be balanced. Apparently, road forcing works very well on "street type" tires, but not so well on tires that have aggressive, knobby treads. What's really weird is that they had them fine, I drove for about 3000 miles and noticed they weren't fine again. That's when they figured out that they were hopelessly out of balance. Make them make it right! #@$%!

 

[SDrake]

Amen to the road force posts. I leaned about it while searching for information on what to do about my forever rough riding truck. First I did have to ditch my factory steel wheels and get some 02 aluminum wheels that were true and round. then I had Michlin MS 265/70R tires installed. They shook. That is when I got really frustrated and searched out infomation on balancing.



I took the truck to a shop that had a Hunter 9700 road force balancer and sure enough one of the new tires had a flat spot on it but even so the balancing up of the other tires made the truck ride better than it had ever rode before. Took the tire back to the dealer and got a new one. Took it to the road force balancer and no dice, it was out of round bad. Went back to the dealer and got another and then had it road force balances. Man oh man it is wierd riding in this truck now. Nothing going on but the engine and drive train doing its thing. I catch my self driving too fast a lot now.



It is really smooth. And I am hopping mad at all the guf I used to get about alignment, and 4WD trucks being hard on tires etc just to avoid taking care of poor balancing and bad tires.

 

[Silver Bullet Ram]

I have noticed another thing with these tires, if I jerk the wheel after the front wheels come back to center the back end wants to keep moving. Kind of scary, feels like one could lose control of this truck or flip it. I should have stuck with my Coopers, have run them for years with nothing like this. So much for Jap quality huh?



Gary

 

[J.BURCHFIELD]

I have seen this before. Tires not round. Jack up one wheel at a time and put a block of wood or a stool against the tire and slowly rotate. Where the tire is high it will just touch the tire if you position it correctly, where it is low you can see the gap and see how much out of round the tire is. Over 30 thousnds of and inch (aprox 1/32 of an inch) is too much out of specs and no amount of balancing will cure an out of round tire. Years ago you could get tires shaved and make them perfectly round but with todays improvments in tire manafacturing there should be no excuse for some companies putting out unround tires. I have found Michelins to be the best and they require less weights to balance. I don't give a damn who makes them they never shot at me and the Japanese did. You will pay more but you can get more milage. I like the peace of mind knowing they wont come apart on me. Your tires are where the rubber meets the road. Jim 321 373 5756 or -- email address removed --

 

[Ol'TrailDog]

I'll second that on the Coopers. I've run Toyo M55 before and liked them except the edge tends ti scallop. I definately like the Coop STs I have now.

 

[Silver Bullet Ram]

Granted the Coopers are a little softer but never let me down, wished the made a 285/75r16 in load range E, I wouldn't gave it a second thought.



Gart