Tyr Sox?

[Karaya One]

A tire will tolerate what it desinged to do, then it goes away. Warmers do nothing to extend that.

Putting Jeff Woods tires in warmers will not make them last longer. His tire is spent long before anything a heat cycle may do to it to decrease its life.

Pete's tires will last him a season if he's running 30's. Hopefully.

Varibables such as times, bikes, rider skill, weather, track surface, etc all combine to slowly degrade a tire. This is where tire life predition and certainty make everything very foggy.

Heat cycles IMO do not play into this as much as people think.

The other tire people may say otherwise - I only point out Michelin's current thinking on this topic.

[Karaya One]

ps - when I'm near my scanner tonite, I'll post the note we made for the next LRRS event concerning this very topic.

It's short, sweet and reflects Michelin's thoughts on heating up their tires.

[s a x m a n]

honestly, who knows what to think anymore ... i guess it comes down to doing what you can afford

i was under the impression that it was almost manditory to have tire warmers will DOTs to make them last a decent amount of time, but maybe this is not the case.

I'm just going to get some DOTs and worry about the tire warmers at a later date I think

[Ken C]

Originally posted by s a x m a n
honestly, who knows what to think anymore ... i guess it comes down to doing what you can afford

i was under the impression that it was almost manditory to have tire warmers will DOTs to make them last a decent amount of time, but maybe this is not the case.

I'm just going to get some DOTs and worry about the tire warmers at a later date I think

That's what I would do. Every race program has a list of wants and needs. Write out the list in order of priority and tire warmers should be in the middle of the list headed by money spent on riding gear, suspension work, and track time.

[legalspeed]

I agree with Karaya One;

1.) What Dave is addressing is prolonged use of tire warmers to keep the tire at operating temp all day;
supposedly increaseing the effective life of the grip.

-It will not.

Rubber is a carbon compound. Like all carbon compounds, it starts to degrade the minute it is mixed.
Rubber is mushy, flexible, plyable. To shape it into useful geometry, we use high heat and vulcanize it. This makes the rubber hard,
like the compounds we are all familiar with such as tennis shoe soles, or car/bike tires. Vulcanization is a process that bonds
molecules together using heat.
If we use a compound that takes heat to set, like our tire compounds, and we apply high heat again, we change the
compound's charactarisitcs again too. This is often seen as "hardening" of the rubber compound. One long heat up will have
more vulcanization influence over the compound as opposed to a short heat cycle.
Therefore:
let your tires cool down between usage if possible and bring them up to optimum temp right before using them.

2.) Use your tire warmers. They will not prolong the useful life of your race tire. They will prolong the useful life
of your plastics, clip-ons, windscreen, subframe, rearsets, legs, and arms by virtue of providing expected traction
for the first three laps.

I can feel the grip reduction from one day of; 2 practices, 2 sprints, and one GT. I'm doing 1:21's on an 04 750
(Greenwood's gixxer from last year). A set of tires lasts me about one-two days now. I stretch them for two.

Dave, how many and how often do the big guys go through sets? Do they mount a fresh set every race?

[Karaya One]

Jay, we will have John use one new set a weekend.

He would run friday afternoon open practice and the first saturday morning practice with the previous weekends tires.

For the second saturday practice, we mount a fresh set and these stay on the entire weekend.

Four races and all practices. John will run PR2 and PR5 on his 2005 CBR600RR.

[legalspeed]

Sounds about what I'm doing.

Thanks Dave. My name is Dan, I was quoting Jay Holland from Beaverun Raceway.

[Karaya One]

Sorry Dan!

Who is Jay? Does he run Beaver Run?

[HBerry]

Jay = Hessogood. Dan and Jay went to beaver run last month for a race.

[legalspeed]

Jay is Hessogood. We went to Beaverun July 30-31.

It was a great road trip, three of us drank 60 beers and a bottle of Jack in 2 days. We also rode
motorcycles real fast.

He's quick, and doing well on the track.

[Nazo]

Dan, I think you guys went 4th of July to Beaver Run.
Your getting all your racetracks and race weekends confused.......I wish I had that problem!!
Next Season!

[Creepy One]

Dan, You and I were racing at Nelson Ledges on July 30 - 31.

[Awesome]

Yup, we raced july 2nd, and 3rd beaver run. I am the Jay.

[legalspeed]

Dan, you suck.

How did you even get into work today?

[Honclfibr]

Wow, all this from a link to cheap tire warmers. Who'd a thunk it. What a wealth of information has sprung forth from my ignorance.

On a related note, what kind of oil should I be running in my tires to get the best lap times? I've been using straight 10 wt fork oil to reduce the rotating mass, but I'm concerned it may cause notchy shifting as it ages.

[rg500]

I have always been told, and believed that tire warmers would prolong my tire life. So I have been using them when I do trackays.

I just did the star school. One of the instructors used to work at Dunlop, he was involved in tire testing. I asked him what he thought about this, and he echoed almost exactly what Dave is saying.

I am about to put a new set of michelins on my ktm and I will be leaving the tire warmers at home.

-Mike Green

[Awesome]

Hey Mike, I'm from Arlington too. And I'll repeat one thing that everyone agrees on, the tire warmers do make a difference in the first few laps. I know I wouldn't be putting in such lap times off the grid if I didn't have them. I checked today and most of the time my first lap is anywhere from 1-4 seconds above my best during the races.

[rg500]

I should have said that I do not race. I probably will soon, but for now I do a lot of trackdays. So my primary concern has been tire life. When I start racing I will break out the tire warmers, for the reasons you mention, but until then I would much rather not carry them.

I actually live in Medford. My studio is in Arlington, 2 blocks from gbm. - Mike Green

[OreoGaborio]

Pete, with the times you'll be running.. them shitz will last you ALL YEAR!

+1

For the record, they lasted TWO YEARS!



Sorry for the super old thread bump... was searching for something & dug this up

[HBerry]

Who knew this place still existed? :-)

[OreoGaborio]

Holy shit, the kid's alive.

You 21 yet?

[Awesome]

Berry, don't you have my chain tool?

[HBerry]

I believe there is a statute of limitations on chain tools....

I turn 21 in June...

[OreoGaborio]

Mike, you know Jay doesn't believe in statutory limitations...

[HBerry]

I guess it's a good thing I'm a few thousand miles away ....