Do Radials flat spot?

[z289sec]

If you leave the weight of the car down on a 275/60 ET Drag radial over the winter will they flat spot? I have a vibration now I didn't have last year and trying to isolate it. Seems to be wheel/tire related in the upper rpms.

[Jason Moulton]

To answer your question, they have a nylon overwrap over steel belts which can produce minor "flat spotting", but nothing anywhere near a nylon bias tire. (The steel won't allow much) If it does, it shouldn't take long (a few miles or one burnout) to get rid of it.

This may be a silly question, but make sure the tire did not move (rotate) on the rim. I'm not sure if you have it secured or not so I have to ask.

Is it on upper RPM's in each gear, or just higher speeds. Does it do it in the burnout box?

Thanks,

Jason Moulton

[z289sec]

To answer your question, they have a nylon overwrap over steel belts which can produce minor "flat spotting", but nothing anywhere near a nylon bias tire. (The steel won't allow much) If it does, it shouldn't take long (a few miles or one burnout) to get rid of it.

This may be a silly question, but make sure the tire did not move (rotate) on the rim. I'm not sure if you have it secured or not so I have to ask.

Is it on upper RPM's in each gear, or just higher speeds. Does it do it in the burnout box?

Thanks,

Jason Moulton

In the burnout, at higher speed, and upon deccelaration. But only over a certain area as far as wheel speed goes. They are glued, and have yet to move.

[Jason Moulton]

If you have done some burnouts, I highly doubt it has a "flat spot".

Strange it is in certain areas? Have you had the re-checked for balance????

Thanks,

Jason

[z289sec]

If you have done some burnouts, I highly doubt it has a "flat spot".

Strange it is in certain areas? Have you had the re-checked for balance????

Thanks,

Jason

Nah, they are getting close to the wear bar anyway, fixin to pull them off and pot them on the street car.

[gray86hatch]

I have never found flat spots in mine. I also don't balance them since I got the bogarts and have had no issues. They are not glued or screwed
Tim