Hoosier Slicks & front tires

[nhramnl]

Forgot one thing... conventional wisdom says that Hoosiers are the most susceptible to radial wobble, Goodyears are next and Phoenix are the least. If you're lucky enough not to experience the condition, you'll never know what it is, but if you do, you may get to the point of changing tire brands to eliminate it. Watch video of some of the Hemi cars at 1000 feet and you'll see exactly what radial wobble is.

[Lenny5160]

Originally Posted by nhramnl

Forgot one thing... conventional wisdom says that Hoosiers are the most susceptible to radial wobble, Goodyears are next and Phoenix are the least. If you're lucky enough not to experience the condition, you'll never know what it is, but if you do, you may get to the point of changing tire brands to eliminate it. Watch video of some of the Hemi cars at 1000 feet and you'll see exactly what radial wobble is.

Must be something that happens on the wider radials. I've been running 9" radials for over 20 years, mostly Hoosier but some Goodyear, and I don't know what you are referring to.

[nhramnl]

Originally Posted by Lenny5160

Must be something that happens on the wider radials. I've been running 9" radials for over 20 years, mostly Hoosier but some Goodyear, and I don't know what you are referring to.

I haven't heard much about it on Stocker radials, but I don't race a Stocker. On Super Stock radials, it is hit-or-miss (some cars experience it, some don't). It shows up as a side-to-side rocking motion. If it gets really bad, it will look like the rocker panels are going to throw sparks. Been discussed here a few times, lots of theories on what causes it and what will eliminate it.

[1320racer]

I've been running radial slicks longer than most everyone posting on the net as well I have logged far more runs than anyone on them.

That said, I've been running Hoosier 32/13.5 radials since 2008, racing every weekend from April through October without radial wobble except one time at one track and the cause was the track.

My car was killer at this track/at this race and IIRC, I ran five, 5.60s in a row, won the boggie race too.

Then once the sun went down and the track cooled, it was a different car and I had radial wobble every pass and had this not been an 1/8th mile race, I would have had to lift.

Point being it was the track not my car.

Left that track, made no changes and the car was right back to perfect launches, passes where ever I raced it.

BTW, that was the last time my car has had radial wobble and that was 8 years ago this November. Radial wobble has nothing to due brand name or air pressure and everything to due with track prep and chassis setup.

Oh and I run 21 psi my 32/13.5 radials.

[Mike Pearson]

I run Hoosier radials on my car. I do get the wobble at times. Certain tracks seem to be more proned to it. It seems to be worse on my car as the tire pressure is increased and it also seemed worse with lighter springs on the back of the car. I typically run between 12 and 14 lbs. in the rear tires depending on the track conditions. I run the 13.5/ 31.5 tire. Definitely no issues with traction and repeatability with that tire

[nhramnl]

[QUOTE=1320racer;565168]I've been running radial slicks longer than most everyone posting on the net as well I have logged far more runs than anyone on them.


On a bracket car? Why?

[1320racer]

because I can and because my MPR built former GT/AA Super stock car, run as a bracket since 2008 is quicker and faster than most Super Stock cars.

[nhramnl]

I've run radial slicks on each of my TWO MPR Super Stock Cavaliers because when I need to be as quick as I can possibly be (like running for class or in a heads-up run in eliminations), they tend to give me a few hundredths. That's the ONLY reason I ever use radials. You sound like a guy who wishes his expensive, elephant-motored bracket car was still a legitimate class car.

[Lenny5160]

Originally Posted by nhramnl

On a bracket car? Why?

I will only run radials on my 9" tire bracket/Super Street car. I have a lot of reasons why, and can't think of any reason NOT to.

[nhramnl]

Originally Posted by Lenny5160

I will only run radials on my 9" tire bracket/Super Street car. I have a lot of reasons why, and can't think of any reason NOT to.

The reason is because there's no "margin of error" with them. They either dead-hook or spin. Stick cars can't use them at all, for that reason. With bias-ply tires, if you don't dead-hook, you still have SOME chance of salvaging the pass. With radials, you're done.