turning the tire

Stocker · Post by **Stocker** » Wed Jun 28, 2006 4:55 pm

I campaign a F/S Camaro .. the problem , or at least I think it's a problem, is that after every pass, the tire is turning on the rim. It turns anywhere from a 1/4" to a full inch, depending on how hard the car leaves. These are 29.5/9/15 M/T's on 10" rims ... no tubes. I run 12 lbs. +/- a little . I launch between 6600-6800 and 60' 1.47 - 1.51 .. This power being used to turn the tires .. I'm sure could be better spent pushing the car forward. I don't really want to use rim screws, but may have to if nothing else can cure the problem ....
Any ideas ?

johndougherty · Post by **johndougherty** » Wed Jun 28, 2006 5:24 pm

My Nova was doing the same thing. I only run 1.67 60 foot times and have hoosier quick time pro tires. I researched it and even emailed Hoosiers tech guy. Two options I heard are, wheel screws or bead locks.
I went ahead and installed the moroso type screws using the directions the Hooiser guy gave me. Works great and the tires hold air.
I also bought a template for drilling the hole from Summitracing.com when I ordered the screws.
John

His tips:
It sounds like it just might be time for a few screws in the wheels.
This will guarantee no more turning on the rim. I would have thought
that the air pressure you are running wouldn't have allowed the tire to
turn but some of it depends on the wheels also. I would install 6-8
screws per side and you won't have to worry about it anymore. Make
sure the screws, front and back on the wheels are straight across from each other so the tire will wrinkle the same on each side. Drill the holes
in the rim without the tire bead being seated, because you don't want
to drill into the bead of the tire. When the screws are installed make
sure there is at least 15 psi in the tire. This will insure the bead
not being pushed off during installation.
If you can run that much air pressure and the car still is hooking hard
then stick with it. You want to run as much as you can provided the
initial traction is still good.

Speedy Goomba · Post by **Speedy Goomba** » Wed Jun 28, 2006 11:44 pm

When you mounted the tires, did you make certain NOT to use any solution on the tire or rim?

I mount my tires dry, and clean the mounting surfaces on the wheel. They dont spin on the rims.

Stocker · Post by **Stocker** » Thu Jun 29, 2006 12:18 pm

I didn't mount the tires ... so I wouldn't know if the tire shop used any lube or not. I'm sure they probably did though.
Mike

Speedy Goomba · Post by **Speedy Goomba** » Sat Jul 01, 2006 6:09 pm

that could be the problem. I would have them remounted, dry.

When i have mine mounted i'm always there to watch, and i clean the rims when the old tires are removed.