Tires spinning on wheels, how to fix?

I feel the only way we can solve this will be for me to come up, drive the car and take the bubbles to dinner. Let me know what day works best for you.

 

I like your support team!

 

We had this issue on our race car; front tires would rotate due to braking, rear due to acceleration.

We seem to have concluded

1) the Pirellis we are using will seal, but are likely a bit slippery on the bead
2) we tend to use tires that are recently mounted, we were suspecting the mounting tech was using a bit too much butter...
3) the wheels are too smooth on the bead surface, and
4) I was probably being too aggressive too early and pressures were not up
5) seemed to occur more consistently when on stickers; if I was starting a session with even mildly scrubbed tires, we had less of an issue

So, seems like we've fixed it by

1) bead blasted the inside bead surface of the wheels to be a bit grippier - this seemed to be the biggest help
2) I make sure I have the tires up to pressure, especially when running stickers. Not always convenient, but in qualifying we'll start pressures a notch high, do a couple warmup laps, come in and bleed down and it solved the issue. I've also since stopped using hard braking to put heat into tires on stickers. As a test, I went out and hammered the brakes and the tires rotated 90 degrees up front.

 

Wheel screws, wheel knurling or bead locks. The video will explain the pros and cons.

http://youtu.be/ERlmKA4XHCY

 

Are you using lube when you put the tire on the wheel?

 

It's more about how they go on. Most everyone uses lube and that's the prob. Your tire guy will hate you because they're a pain to put on without lube but it makes a big difference.

 

Bead blast wheel
Mount with cheap hairspray

I mount my own wheel tires never an issue since but less horsepower

 

I like it

But, I've got to ask, "where & how did you you come up with hairspray?......"

Dunno about you, but it's not the first (or last!) thing I'd have tried as a lube!



Cheers,
Ian

 

Not a lube. Gets the rubber tacky so it sticks to the scuffed up inside bead area.

 

Took me a while to get good at mounting tires on wheels. Just because a tire is on is not enough. Hairspray is slippery gives about 2 mins working time, glues wheel to tire, and makes up for bad casting flash on Hoosier dotR race tires that often leak as well as spin on wheels.

 

OK.

Learn something every day.....

OK.

But again, hairspray wouldn't have popped into my head as the solution!

Great stuff! Hopefully the OP will be back soon telling us how it worked....

Cheers,
Ian

 

Honestly bead locks are probably the best option. There are a couple of forces at play, under acceleration and high velocity centrifugal force is radially pulling on the tire bead, coupled with the air pressure and heat the tire the bead will lift off its seat to where the tangential force of the rim via tq and the contact patch friction on the road can cause slip in relation to the tire bead. Under braking it's heat from brakes adding to the expansion of the air and softening of the tire coupled with the tangential force exceeding the frictional force of the bead seat. i.e. the tire grip and surface area of the contact patch have more 'grip' then the tire bead. If one thinks about it, the entire contact patch has to transmit it's force thru the tire bead seat to the wheel hub, so either both share a similar surface area and frictional coefficient or the bead seat should have a greater coefficient of friction since its surface area is more then likely smaller.

I know long technical explanation, but sometimes that helps is trying to figure out how to solve a problem.

hairspray works on plastics and rubbers to make them slippery for brief periods due to the chemical compounds in it, a combination of solvents and polymers. Not to different then what happens in the 'bleach pits' at the drag strip. 'course this all falls under tire dope and the recipes are many.

bottom line, the tires grip to the road is greater then the grip to the rim.

 

Is there a car in the picture?

 

Obvious upside, I'm guessing the support crew may already have hairspray at hand.

 

+1

Post of the thread.

I remain somewhat "concerned" that it's what FBB came up with....

Cheers,
Ian

 

I got some good uses for nail polish too.

 

I got the idea of hair spray after using bead sealer which is for sticking tires to wheels and sealing beads from air leakage. Then found out Im not the 1st to use hairspray. If the crew chief can bare using hairspray use bead sealer. Get it from myers supply. It was made for these purposes and goes on like heavy black rubber cement and is just nasty messy but it works. Hair spray does the same thing with no mess.

 

Yeh - I remember you showed us earlier - must have taken you ages to apply!
You were using extra gloss to keep them shiny in your driving gloves right?
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Yes and extra hairspray when driving top down in 355 spyder so my hair stays nice. Shiny car and bad hair is "no es bueno"

 

Me too.... Works a treat as 'thread lock' on RC models. (Not on the threads, but rather the heads.) Any 'movement' shows up as a big ol' crack, easy to see its coming apart!......

Cheers,
Ian