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Mickey Thompson Radial Tire Problem

11K views 22 replies 12 participants last post by  Art Deco  
#1 ·
I have a tubbed 57 chevy that I recently bought a set of Mickey Thompson radial tires for, and have had nothing but problems since. The rear tires are 22 x 33 x 15. When I accelerate, the car begins to rock from side to side so severely that I have to get out of the gas. When I put my bias ply's (21.5 x 33 x 15) back on it drives straight as an arrow. Has anyone else experienced similiar problems? Any insight into this issue would be greatly appreciated.....Thanks.
 
#4 ·
I'm already $1500.00 in the hole for the Mickey Thompsons and don't want to potentially go through the same thing with Hoosiers. Of course when speaking with Mickey Thompson they deny there's a problem. I assume if I speak with Hossier prior to purchasing them they would do the same. If I switch, I'll probably just go back to Bias ply.....
And, this problem does not occur when the tires are spinning, only when they hook and torque is being applied.
 
#5 ·
Pro57 said:
I assume if I speak with Hossier prior to purchasing them they would do the same.

Not true, I am on my second set of Hoosiers and find the tires real stable, I was running the MT bias and and went to the Hoosiers because of the MT bias bounce and the lack of control. The Hoosiers really tamed my ride, handle well and give one the feel of being glued to the road. Thanks for the info on the MT radials I was kind of looking at them for the next tire change, you have saved me some hassle and expense. The only down side to Hoosiers is availability of the large but popular sizes, the way around that plan ahead.
 
#7 ·
#8 ·
dont think they were on there .......looked similar insize and profile to about a 275 60 15 radial ta but said hoosier on the side wall (didnt look at the tire size on them just saw them going by the truck in a parking lot and thought WOW Hooisers on the street)
Shane
 
#9 ·
Sounds like the rims might be too narrow for the tire. This would result in a rather large sidewall bulge that would allow for a bunch of lateral (flex) movement.

Russ
 
#10 ·
pepi said:
Not true, I am on my second set of Hoosiers and find the tires real stable, I was running the MT bias and and went to the Hoosiers because of the MT bias bounce and the lack of control. The Hoosiers really tamed my ride, handle well and give one the feel of being glued to the road. Thanks for the info on the MT radials I was kind of looking at them for the next tire change, you have saved me some hassle and expense. The only down side to Hoosiers is availability of the large but popular sizes, the way around that plan ahead.
What I meant by my statement was that I believe Hoosier would say the same as MT, not that they would actually handle the same. It sounds like I'm going to have to gamble with another $1000.00 to see if the Hossiers do the trick. Hopefully someone can confirm my problem with the MT's therefore providing me a little more confidence on the Hoosiers working with my car.
I appreciate your input and good luck with your rides....
 
#11 ·
S10xGN said:
Sounds like the rims might be too narrow for the tire. This would result in a rather large sidewall bulge that would allow for a bunch of lateral (flex) movement.

Russ
Actually the sidewall bulge isn't bad and I'm using their recommended rim. All of their tire measurements are based on the 15 x 15 rim I'm using. I'm going to put it on a chassis dyno tomorrow and reproduce the problem while others try to evaluate whats happening. If it's a suspension issue they'll be able to see that as well. Thanks for the sugestion.
 
#13 ·
68NovaSS said:
Not the same issue, but with MT Sportsman Pros, 18.5's, 15#'s I get thrown around by the slightest rut in the road, scarey at highway speeds, the car feels like it could change lanes!
That's one of the reasons I was advised to go to Radials but obviously it created other issues. I would stay with what you have. I'm just burning money trying to fix this issue that shouldn't exist in the first place.
 
#14 ·
Did you bead lock your MT? A bead lock feels safer on the end of the 1/4 mile run because of the stiffer sidewall from the edge of the rim to out about 1 inch.

Drag slicks tire pressure on drag radials (between 13 to 20 psi) is different than bias-ply (6.5 to 12 psi)
 
#15 ·
juiced66malibu said:
Did you bead lock your MT? A bead lock feels safer on the end of the 1/4 mile run because of the stiffer sidewall from the edge of the rim to out about 1 inch.

Drag slicks tire pressure on drag radials (between 13 to 20 psi) is different than bias-ply (6.5 to 12 psi)
I don't use a bead lock but also don't use these tires at the track. I put my Hoosier Quick Time Pro's on and don't have any problems. This problem is experienced on the street during hard acceleration when the tires are hooked up. I received the name of an MT executive the other day and will be calling him next week to discuss either a plan for correction or refund. Thanks for you input.
 
#16 ·
mickey thompson tires

I also have a tubbed 57 with the same tires (mickeys)
you have, and I really get wobbly when i let up on it
after a short hard run..real scary. I was thinking it was
my front stock suspension. My rear has been halved
with 4 link coil overs. Let us know how things turn out.
r dobbs
 
#18 ·
I'm having the problem with the Mickey Thompson S/R tires. I also have a set of Mickey Thompson bias ply and no problem with them.
The last thing I do before I throw these tires in the garbage is to have a professional race shop go over my entire suspension looking for something that could cause the thrashing. I'm on the fence whether I should do it or not because the work will cost more than just tossing the tires and buying another set of hoosiers.
I'll post back when I do something.
 
#20 ·
Pro57 said:
I have a tubbed 57 chevy that I recently bought a set of Mickey Thompson radial tires for, and have had nothing but problems since. The rear tires are 22 x 33 x 15. When I accelerate, the car begins to rock from side to side so severely that I have to get out of the gas. When I put my bias ply's (21.5 x 33 x 15) back on it drives straight as an arrow. Has anyone else experienced similiar problems? Any insight into this issue would be greatly appreciated.....Thanks.
** I had similar problem with my prostreet sedan delivery when I first built it.
a. I had too little air in the tires
b. the shocks were straight up and down unlike normal applications where the top of the shock is set in toward the center of the chassis.. so it cant compensate like a normal shock..
I added a sway bar, stiffer coilovers and more air in the tires. Bingo ..no problem from that point.. hope that might help.
good luck.
Docbob
 
#23 ·
Hello Pro57.
I am a big fan of Hoosier tires. I have them on the back of my tubbed '37 and they have been flawless.
You didnt mention in your original post what size wheel youre running.
Also what tire are you running in the front? Never mix Bias and radial tires it just doesnt work well. Double check air pressure. Are your Bias tires the same size? Does it get squirrly under braking or just deceleration? What about brake bias? This could affect things some.

-Art