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1700camaro 05-03-2015 02:53 PM

Radial Slicks Moving On Rim
 
I have 20 - 25 passes on our new Hoosier Radial Slicks (9x30) mounted on 8" wide Cragar Superlights. The slicks move about a 1/2" after about 5 passes. The Driver's side is the worse. I rotate them to try & re-index, but of course that's not going to work. The rim bead/tire bead were cleaned with acetone & mounted dry on the 1st 10 runs.

Next, I broke the beads clean them again. Then I glued them using 3M black weatherstrip adhesive. They are still moving on the rims. I don't know what to do & don't want bead lock rims.

The car weighs 3100 lbs. with driver. It has a pump gas 434 Chevy 630 hp/600 ft. lbs. torque. 5800 stall, 1.76 glide & 4.10 rear. Runs 10.0s - 10.40 depending on tune & track with mid-high 1.4 60's.

Would like to here some suggestions.

1700camaro 05-03-2015 02:55 PM

Re: Radial Slicks Moving On Rim
 
I forgot we are running 18-20 lbs. air pressure.

Tex013 05-03-2015 06:05 PM

Re: Radial Slicks Moving On Rim
 
I clean the rim bead area then just use Permatex High Tack gasket sealant . Inflate to around 25-30 psi and let sit for a couple of days then good to go . Only ever had to redo this once . Bugger to clean the rim when replacing tyres , I use paint thinner
Good luck


Tex

HandOverFist 05-03-2015 07:20 PM

Re: Radial Slicks Moving On Rim
 
I had the same problem with the Camaro when running 17psi. Went to 20psi and has not moved since. It's a given I don't have the tq/hp your car does tho. Our rims are 10" btw.

Dyno 05-03-2015 07:25 PM

Re: Radial Slicks Moving On Rim
 
put screws on them!

Ed Wright 05-03-2015 09:16 PM

Re: Radial Slicks Moving On Rim
 
Should be on 10" wheels. When I ran 9" Hoosiers, on 10" wheels, I used 24 to 26 psi. You will use more air on wider wheels. Every radial I have used liked wheels 1" to 2" wider than the tread area. With the air needed for the wider wheels, it has always been faster, but with the added air my tires never slipped. No glue or screws on any of mine, just mounted clean and dry.

Run to Rund 05-03-2015 09:47 PM

Re: Radial Slicks Moving On Rim
 
I sandblast the bead areas of the wheel.

1700camaro 05-04-2015 02:40 AM

Re: Radial Slicks Moving On Rim
 
Thanks guys!


Sounds like I need wider rims & more pressure. I'm not putting screws in radials.

j gardiner 05-04-2015 02:20 PM

Re: Radial Slicks Moving On Rim
 
We're their any adverse effects from the slicks moving on the rim.

Ed Wright 05-04-2015 02:26 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by 1700camaro (Post 469580)
Thanks guys!


Sounds like I need wider rims & more pressure. I'm not putting screws in radials.

Mine hooked harder, ran quicker on wider wheels anyway.

rallye bob 05-05-2015 08:25 AM

Re: Radial Slicks Moving On Rim
 
It may take a few more passes to "set" the tires. keep trying..
I run the exact same #'s and slicks, rim size as you. I have no slippage...

Mike Delahanty 05-05-2015 12:03 PM

Re: Radial Slicks Moving On Rim
 
1 Attachment(s)
I'm on my 5 or 6th set of Hoosier Radials and have never had an issue. For curiosity, I put a paint mark on the tire that aligns with the valve stem on the last set. After about 70 runs you can see how much they have moved - not much at all. For the record - this is a 3400 LB A/SA Max-Wedge 64 Plymouth - mounted on 10" Weld Wheels w/ no special work on the bead - no adhesives - but always run with 21+ pounds of air pressure.

As referenced by others, I think the wheel width and higher air pressure are the key.

George Mirza 05-05-2015 08:28 PM

Re: Radial Slicks Moving On Rim
 
I've had this same issue for years. Tires would rotate 1/2"-1" on every pass. Hoosier 30x9, 10" wheel, 20lbs of air 3200 lb car. Swapped tires from side to side and they would move back to a point, sometimes one and not the other. Tried screws, then the tires would move and leak. My next move is to scuff up the bead area of the wheels, give the tire bead something to bite on. Sandblasting suggestion is a good one, I was thinking DA and 180 grit paper.

1700camaro 05-06-2015 04:52 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by j gardiner (Post 469623)
We're their any adverse effects from the slicks moving on the rim.



No out of balance issue yet. Going to break the beads & re-index to where they were initially balanced at.


I haven't tried over 20 lbs. air pressure yet. Might try 21, but they are crowning pretty good at 20 with that 8" rim.

Ed Wright 05-06-2015 05:33 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by 1700camaro (Post 469893)
No out of balance issue yet. Going to break the beads & re-index to where they were initially balanced at.


I haven't tried over 20 lbs. air pressure yet. Might try 21, but they are crowning pretty good at 20 with that 8" rim.

That is why they should be on 10" wheels. They will hook harder, and run faster with more air.

SStockDart 05-06-2015 06:29 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by Ed Wright (Post 469898)
That is why they should be on 10" wheels. They will hook harder, and run faster with more air.

agree!!!

supergas4 05-06-2015 06:33 PM

Re: Radial Slicks Moving On Rim
 
If wheels are very old that could be a problem.Every time you have tires mounted the wheel changes very little but it does change.I have been mounting slicks for 35 years the older the wheels the easier the comeoff and go on.I use the spray permetex.Radials allways like more air than you would think.Dwight Allen

1700camaro 05-06-2015 07:52 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by supergas4 (Post 469903)
If wheels are very old that could be a problem.Every time you have tires mounted the wheel changes very little but it does change.I have been mounting slicks for 35 years the older the wheels the easier the comeoff and go on.I use the spray permetex.Radials allways like more air than you would think.Dwight Allen


They were bought in early 1989 & have had many tires mounted on them.

j gardiner 05-08-2015 09:08 PM

Re: Radial Slicks Moving On Rim
 
Most everybody I know don't even check to see if the tires move. Just put the on and let them eat. Maybe I am just lucky idk. It might not be any big deal if they move a little bit.

1700camaro 05-10-2015 01:46 PM

Re: Radial Slicks Moving On Rim
 
Quote:

Originally Posted by j gardiner (Post 470076)
Most everybody I know don't even check to see if the tires move. Just put the on and let them eat. Maybe I am just lucky idk. It might not be any big deal if they move a little bit.


My main concern is the tire/rim balance!

1700camaro 05-17-2015 12:53 AM

Re: Radial Slicks Moving On Rim
 
Well, we put 21 lbs. in them & the car ran it's fastest time in crappy air. I would go up another lb. but I was flirting with the red lights with 2 back to back .001 lights in time runs & .000 in the 1st round. Had to let some pressure out on all 4 tires. Looks like I'll be pulling 1 or 2 hundred rpm from the launch also.

Tim Quintin/Cole s/g 05-17-2015 09:08 PM

Re: Radial Slicks Moving On Rim
 
Put screws on them and you'll be good to go whenever this happens

1700camaro 05-17-2015 09:21 PM

Re: Radial Slicks Moving On Rim
 
Not putting screws in & they aren't moving with 21 lbs. Plus, they are quicker/faster with the added pressure.

Nathan Stinson 05-18-2015 10:16 AM

Re: Radial Slicks Moving On Rim
 
Mickey Thompson does not recommend putting screws in a tire with a radial construction.

Several discussions about this on other web sites.

http://www.yellowbullet.com/forum/sh...d.php?t=470560


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