Radial Wabble Problem - Page 2

Greg Hill · 01-04-2008, 11:00 AM

Put some snubbers on the front end so the front end can only go down so far. You will be amazed at how much that will help.

Greg

mr305 · 01-04-2008, 01:11 PM

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Put some snubbers on the front end so the front end can only go down so far. You will be amazed at how much that will help.

Greg

Greg, i do believe the car has snuggers on the front. Any other suggestions??

mike withers · 01-04-2008, 02:04 PM

I had heard the radials should only be used on automatic cars but I just had to try them on my stick car. Wow! the tire shake was incredible I thought I was in a fuel car. It didn't settle down until I put it into third gear.The announcer at Norwalk said it looked like basketball going down the track More air pressure did not help Two passes were enough for me to see the light. They just do not have enough sidewall. As for your problems I have observed wobbles similar to what you are experiencung on My buddies sperstock hemi car. I do know he has double adjustable shocks front and rear.

tim worner · 01-04-2008, 03:00 PM

We have M/T radials on all 3 of our cars and have no problems. For sure a radial tire will bring out any problems in your suspension and also the track. The only time my car tends to roll or pitch is on a uneven surface. I would recommend no less than 16lbs air pressure. Also make sure both tires are the same roll out and the correct direction.

mr305 · 01-04-2008, 08:48 PM

Thanks for all your post guys. Ya'll are teaching me here since im a rookie at this kinda stuff. i do know the circumfrance of the tires are the same to and 1/8 inch. and they are all heading the right direction. i just dont wanna crunch up there car or anyone elses for that matter. i just wanna get it fixed. Thanks again for all your guys help. and if you have any other suggestions please don't hesitate there is still alot of winter left and i get bored pretty easy lol. thanks
aaron disinger
327y
gt/ha

Joe Hertline · 01-14-2009, 01:37 PM

along with the front snubbers, if you're having problems with wobble at the top end in the shutdown make sure the front snubbers hit at the same time...ie push down on the front of the car and be sure that one side does not go down farther than the other. When you're slowing down, the front end usually bottoms down and uneveness can cause oscillation that is magnified in the radials. Might be part of the problem, but shocks are likely to contribute too. Good luck finding the cause.

Dick Kirkpatrick · 01-14-2009, 04:01 PM

Sounds to me like you don't have any (or not enough) toe in.
This will also scrub off mph

John Brown · 01-14-2009, 04:43 PM

Since 2004 when I first used M/T radials I have never had a problem with any wobble. I believe it could be several problems not related to the tire but the setup and configuration of the car. i.e. wheel and tire combination, suspension setup (both front and rear), front end alignment etc. So, with that said I would like to hear from anyone who has done an a/b test using the same wheel size (back spacing too) and tire size but switching bias to radial only. This would settle any misconception about perceived (or real)radial wobble.

Ed Wright · 01-14-2009, 05:06 PM

Only times I ever had it happen was too little air, when I didn't have them on wide enough wheels. Hoosier's catalog list wheels not wide enough. For instance, they show 10" wheels for a 10.5 X 30 radial, 12' wheels make a whole new car of it. Hooks much harder and more stable. I've yet to have as good a result if the wheels was not wider than the tread area by at least an inch.

Buicksstage1 · 01-14-2009, 08:11 PM

I've seen it several times on two different cars, mid 9 sec 68 Camaro with cal tracks and a high 9 sec 69 GS with ladder bar and Alf Wiebes upper wish bone, both cars using C07 Hoosier's. It is for sure a wabble, not a shake or vibration and at part track. It is someting to watch, it is a side to side thing. I have been using MT's for years and love them. Chris

01-04-2008, 11:00 AM	#11
Greg Hill VIP Member Join Date: May 2006 Location: Louisville , KY Posts: 1,995 Likes: 68 Liked 279 Times in 68 Posts	Re: Radial Wabble Problem Put some snubbers on the front end so the front end can only go down so far. You will be amazed at how much that will help. Greg

01-04-2008, 01:11 PM	#12
mr305 Member Join Date: May 2007 Location: Monticello Posts: 160 Likes: 0 Liked 2 Times in 1 Post	Re: Radial Wabble Problem -------------------------------------------------------------------------------- Put some snubbers on the front end so the front end can only go down so far. You will be amazed at how much that will help. Greg Greg, i do believe the car has snuggers on the front. Any other suggestions??

01-04-2008, 02:04 PM	#13
mike withers Junior Member Join Date: Dec 2007 Posts: 67 Likes: 4 Liked 3 Times in 1 Post	Re: Radial Wabble Problem I had heard the radials should only be used on automatic cars but I just had to try them on my stick car. Wow! the tire shake was incredible I thought I was in a fuel car. It didn't settle down until I put it into third gear.The announcer at Norwalk said it looked like basketball going down the track More air pressure did not help Two passes were enough for me to see the light. They just do not have enough sidewall. As for your problems I have observed wobbles similar to what you are experiencung on My buddies sperstock hemi car. I do know he has double adjustable shocks front and rear. Last edited by mike withers; 01-04-2008 at 02:08 PM.

01-04-2008, 03:00 PM	#14
tim worner Senior Member Join Date: Jan 2002 Location: duncannon Posts: 837 Likes: 14 Liked 126 Times in 20 Posts	Re: Radial Wabble Problem We have M/T radials on all 3 of our cars and have no problems. For sure a radial tire will bring out any problems in your suspension and also the track. The only time my car tends to roll or pitch is on a uneven surface. I would recommend no less than 16lbs air pressure. Also make sure both tires are the same roll out and the correct direction. __________________ Tim Worner SS 1747

01-04-2008, 08:48 PM	#15
mr305 Member Join Date: May 2007 Location: Monticello Posts: 160 Likes: 0 Liked 2 Times in 1 Post	Re: Radial Wabble Problem Thanks for all your post guys. Ya'll are teaching me here since im a rookie at this kinda stuff. i do know the circumfrance of the tires are the same to and 1/8 inch. and they are all heading the right direction. i just dont wanna crunch up there car or anyone elses for that matter. i just wanna get it fixed. Thanks again for all your guys help. and if you have any other suggestions please don't hesitate there is still alot of winter left and i get bored pretty easy lol. thanks aaron disinger 327y gt/ha

01-14-2009, 01:37 PM	#16
Joe Hertline Junior Member Join Date: Feb 2002 Location: Marcy, NY Posts: 57 Likes: 16 Liked 3 Times in 2 Posts	Re: Radial Wabble Problem along with the front snubbers, if you're having problems with wobble at the top end in the shutdown make sure the front snubbers hit at the same time...ie push down on the front of the car and be sure that one side does not go down farther than the other. When you're slowing down, the front end usually bottoms down and uneveness can cause oscillation that is magnified in the radials. Might be part of the problem, but shocks are likely to contribute too. Good luck finding the cause. __________________ Joe Hertline 1318 SS/FA

01-14-2009, 04:01 PM	#17
Dick Kirkpatrick Junior Member Join Date: Dec 2005 Location: Carlise, Ontario, Canada Posts: 73 Likes: 0 Liked 0 Times in 0 Posts	Re: Radial Wabble Problem Sounds to me like you don't have any (or not enough) toe in. This will also scrub off mph __________________ Dick Kirkpatrick 3033 SS

01-14-2009, 04:43 PM	#18
John Brown Junior Member Join Date: Apr 2006 Location: Sterling Heights, MI. Posts: 11 Likes: 3 Liked 13 Times in 3 Posts	Re: Radial Wabble Problem Since 2004 when I first used M/T radials I have never had a problem with any wobble. I believe it could be several problems not related to the tire but the setup and configuration of the car. i.e. wheel and tire combination, suspension setup (both front and rear), front end alignment etc. So, with that said I would like to hear from anyone who has done an a/b test using the same wheel size (back spacing too) and tire size but switching bias to radial only. This would settle any misconception about perceived (or real)radial wobble. __________________ John Brown 3451 SS

01-14-2009, 05:06 PM	#19
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Radial Wabble Problem Only times I ever had it happen was too little air, when I didn't have them on wide enough wheels. Hoosier's catalog list wheels not wide enough. For instance, they show 10" wheels for a 10.5 X 30 radial, 12' wheels make a whole new car of it. Hooks much harder and more stable. I've yet to have as good a result if the wheels was not wider than the tread area by at least an inch. __________________ Ed Wright 4156 SS/JA

01-14-2009, 08:11 PM	#20
Buicksstage1 Junior Member Join Date: Nov 2008 Location: The east coast! Posts: 21 Likes: 0 Liked 0 Times in 0 Posts	Re: Radial Wabble Problem I've seen it several times on two different cars, mid 9 sec 68 Camaro with cal tracks and a high 9 sec 69 GS with ladder bar and Alf Wiebes upper wish bone, both cars using C07 Hoosier's. It is for sure a wabble, not a shake or vibration and at part track. It is someting to watch, it is a side to side thing. I have been using MT's for years and love them. Chris __________________ 72GS stage2 455 street/strip best et 9.93 1970 Stage1 iron heads,stock rods. 1.37 60' 10.17@129.8 70 GSX clone, 9.3:1 455 stage2 best et 11.00 Last edited by Buicksstage1; 01-14-2009 at 08:14 PM.