Drag radial spinning on rim??
 

I posted this question on another forum but have not had any luck on suggestions or advice so I'll give it a shot here:

Im running a M/T 28.0 / 9.0R 3354R tire on a 3400 pound Nova. Car runs 11.70 in good air 11.90 in the summer.
I have had the issue of the slick turning on the rim.
My wife drives this car primarily and as it has became quicker and quicker I have started to have fears of the tire deflating du to the tire movement on the rim.
I have tried some RTV between bead and rim but with no success.
I tried adding rim screws, and it did stop the rotation but the car has slowed .3.
I called M/T and was told the rim screws are a bad no no on the radial tires.

Has anyone else had issues like this?
If so how/what have you done to stop it?

Re: Drag radial spinning on rim??
 

What tire pressures? Trans/ratio?

Re: Drag radial spinning on rim??
 

400 TH 2.52 low gear 4:11 rear gear
8" wide rim 16 psi

Spins both off of foot brake as well as TB

Re: Drag radial spinning on rim??
 

When the tires are mounted you cannot use lube, only water, RTV will not help

Re: Drag radial spinning on rim??
 

We run the M/T PBRs 29.5x10.5 on a 9" wide rim. The car is a 3200 lb. Camaro runs high 5s 1/8th & high 8s 1/4 mile. They do move about 2"s over about 50 runs. We leave off a transbrake & 60' in the high 1.20's - low 1.30s.

IMO, you're not running enough pressure. We started around 18 lbs. & are at 20 lbs. now to help slow the slip.

Get rid of the rim screws, M/T is right!

I have double beadlock rims now but haven't been to the track on them. I'm going to lower the pressure back down around 18 lbs. again.

Re: Drag radial spinning on rim??
 

With a 11.70 car I?d go up to 22 lbs?you?re probably wadding up the tire around the narrow rim. You can slow-mo video to see how the tire is reacting. More pressure you use and hook the faster you’ll go.

Re: Drag radial spinning on rim??
 

To all that have replied.
Thank you for the advise.
I'm getting tires discounted tomorrow to clean all the crap of and weld the holes shut.
Will try more air pressure next time out.

Re: Drag radial spinning on rim??
 

While you are at it, sandblast the bead areas of the wheels.

Re: Drag radial spinning on rim??
 

totally unnecessary. I've run radials for 2 decades without once ever "spinning on the rim"

All that required is the rim's and tire's bead is cleaned with acetone/Lacquer thinner, brakekeen, etc. and them mount them dry. IF they move at all, it will be minimum in the 1st few hits

Re: Drag radial spinning on rim??
 

Just to add another question to the group here.
long as the rim screws do not tear up the bead, how are the rim screws any different from a beadlock wheel?

Re: Drag radial spinning on rim??
 

I was told the radial tire has different construction on the bead then biasply slicks.

I have been told that the yellow body panel glue works well. But I never had a issue when I was running them. I'm back to non-radials. Less issues at my home track.

Re: Drag radial spinning on rim??
 

RTV wont help.

I know someone who has used VHT on the rims when fitting tyres and never had any spinning on the rim (32 x 14 slicks). The only disadvantage is removing the tyres how well they stick and then cleaning the VHT before fitting the new tyres. He has done it for many years before his new car having beadlock rims.

However, for any radial, I would look at Beadlocks to clamp them properly. Making sure you specify which tyres you are using when your order the rims as M/T and Goodyear have different bead thicknesses and I know Billet Specialties offer different beadlock rings for the different tyres.

Re: Drag radial spinning on rim??
 

Correct

Re: Drag radial spinning on rim??
 

totally unnecessary!

Re: Drag radial spinning on rim??
 

I have run many sets of radial slicks mostly Hoosiers. The last 3 years I started running M/T PBRs.

It doesn't matter the brand; they move on the wheel & take no set. It happens if the tire is mounted with lube or clean tire beads & wheel beads with brake clean. It doesn't matter if the wheel is used or new (Weld Wheels).

The Hoosier's are easy enough to rotate (non-directional) to help maintain balance. The M/T's are directional & may need to be re-balanced or moved back to their original mounting/balance position.

I bought new wheels with beadlocks to use with the PBRs & have a set of Hoosier's mounted on traditional Weld wheels for spares.

Racers can do as they wish. The one thing I will not do is use wheel screws with radials. ;)

Re: Drag radial spinning on rim??
 

Curios how much the double beadlocks slow you down?

Re: Drag radial spinning on rim??
 

Jim,

I haven't had a chance to run them yet. I'm not too concerned if they slow me down.

I primarily bracket race & the M/T PBRs are pretty heavy compared to the Hoosiers I run.

Re: Drag radial spinning on rim??
 

I'm sure I was slower this past weekend & I'm sure the beadlocks contributed. The major factor of slowing was the heat/crappy DA. I also made changes on the suspension & launch tables.

I don't have any slippage between the tire & the wheel. It was worth it for what I was trying do.