Well first off im runnin m/t ET street non radial(bias-ply)
tires...at about 110 the *** end of the car starts wobblin side to side....Is this normal....I was runnin 13psi in the tires anything more the car spins......

Last question if I go with the radial version will I hook as good...cars pullin low 1.6s on shitty prep on completly bone stock suspension.....

any input apreciated......

 

1)I have ran with those tires for a about a year now. These tires do start to wobble with only 13psi on the big end. Also launching with 13psi my tires will spin easier, compared to 17psi. Plus what I found ( when heating up the tires I just hold them until I see just a hint of smoke) if I hold them too long the tires get a little greasy.

2) I have been seeing A4 launching better with the drag radials, and M6 launch better with bias-ply.

 

How heavy is your car? if your car is stock weight then IMO 13#'s is kinda low. I have ran M/T ET Drag (slicks) and now run a Hoosier DOT QTP, both are bias ply also. I would describe the movement I'm familiar with as swaying on the big end (tires feel like Jello ), this I have been told is normal especially if youre running 13#'s in a 3700# car. I started off running 18#'s and it swayed and scared me the first time I ever ran on them. After getting yoused to the feel I started running 15#s and thats about all the sway I feel comfortable with, and yes those 2 #'s did make a noticable differance.

 

I run ET streets. Trap about 120 with no problems but I run 'em at 18 psi... M6 and a healthy burnout.

 

yeah that describes it well....and with me in the car id say its 3700+...I was told it was normal for that low of a psi....i guess i need to do some suspension work before anything else and try more psi.....

 

I hear an anti roll bar should help a little.