Just wondering if anyone else has had a chunking problem with the Azenis when on track. I have had my 195/60/14 for only about 3 weeks and this was the first weekend of track use I have put on them. I checked my tires after every session just to make sure everything was wearing evenly and whatnot and noticed that my driver's front tire's tread was seperating from the outside of the tire. Tire pressures were around 30 psi cold in the fronts....
I just really want to know why they would just all the sudden give out...

Do ya'll think I could send it to Falken and get a new one maybe cause now I am stuck with a tire that makes me uneasy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97ShLude &raquo;</TD></TR><TR><TD CLASS="quote">Do ya'll think I could send it to Falken and get a new one maybe cause now I am stuck with a tire that makes me uneasy.</TD></TR></TABLE>

Heh, I don't think so.

 

I think your running too low pesure. If you driving a lude with only 30psi that your problem. I don't run um that low on my CRX.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rex_boy &raquo;</TD></TR><TR><TD CLASS="quote">I think your running too low pesure. If you driving a lude with only 30psi that your problem. I don't run um that low on my CRX.</TD></TR></TABLE> sounds like your tire got overheated. bring that pressure up to at least 35. get some 15's if you can. that will also help

 

Yeah it sounds like you might be running too low of a tire pressure. I usually run 34 cold on my 2200 lb civic. Maybe try 36 cold.

 

30psi cold for track pressures is definately not too low. I've run as low as 29 psi cold and no problems at all. Pressure as they come off the track is more important - shoot for about 38psi. If you built heat in the tires all day and they sat in the sun, etc you could have gotten the tires well up over 40psi which would contribute to their chunking - but the main problem with that is overdriving the tires. I've chunked falkens before on track... at cmp (abrasive surface) and tons of slip angle for the entire session, i.e. overdriving the tires. sliding the tires a bit is fast, but it will trash street tires if you go too far for a whole session.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97ShLude &raquo;</TD></TR><TR><TD CLASS="quote">Just wondering if anyone else has had a chunking problem with the Azenis when on track. I have had my 195/60/14 for only about 3 weeks and this was the first weekend of track use I have put on them. I checked my tires after every session just to make sure everything was wearing evenly and whatnot and noticed that my driver's front tire's tread was seperating from the outside of the tire. Tire pressures were around 30 psi cold in the fronts....
I just really want to know why they would just all the sudden give out...

Do ya'll think I could send it to Falken and get a new one maybe cause now I am stuck with a tire that makes me uneasy.</TD></TR></TABLE>

Sorry if this is a stupid question...

Are you sure it's not just rubber that your hot Azenis picked up from off the track, that's peeling off? Others have made this mistake... it's pretty odd the first time you see it.

-Chris

 

Youre running 14s on a 97 lude? ;o

Ive run from 20 to 50 psi in my 14s with no problems...

 

Another thing, these are techincally STREET tires, they don't behave the same way an R-compound will on track. I typically ran 35 cold on 15 inch azenis(old style) and didn't really mess with them all that much pressure wise. I usually run about 30-32psi(depending on which wheel and at which track) in my r-compounds now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97ShLude &raquo;</TD></TR><TR><TD CLASS="quote">has had a chunking problem
.
.
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noticed that my driver's front tire's tread was seperating from the outside of the tire.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris F &raquo;</TD></TR><TR><TD CLASS="quote">Are you sure it's not just rubber that your hot Azenis picked up from off the track, that's peeling off? Others have made this mistake... it's pretty odd the first time you see it.</TD></TR></TABLE>

97, you need to be careful about your terminology. Right now, I'm really confused about what you're saying. (And Chris is right.)

"Chunking" refers to small "chunks", or pieces, of the tire tread becoming dislodged from the tire. These look like pits on the surface of the tire and usually occur around the edges (shoulder) of the tire tread, as shown here:



This is different from "tread separating". When the tread separates from the tire, it does so in a layer, in larger areas - not small "chunks" the size of a small coin, but rather, areas usually as large as your fist (or along long stretches of the edges), and you can see a layer of rubber peeling off from the carcass of the tire.

These are two entirely different things.

And Chris is talking about something else entirely different. Your tires can actually pick up ADDITIONAL rubber out on the track. It looks like an additional layer on top of the surface of the tire. It may appear to be stuck on, but you can usually peel it off and see the original surface of your tire tread. Sometimes it peels easily, sometimes you can peel it off using a screwdriver or chisel - be careful not to damage the tire though! Also note that you really don't HAVE to remove that additional rubber; you can just take the car out on the track in the next session, and it will wear off (or you'll accumulate more, in different spots).

In any case, these are three different things, and they look totally different...

 

What width wheels are you running them on? ALL of the problem's I have seen with Azenis have been on a rim that's been too narrow.

 

What the other folks said as to one, overdriving and two tire pressures. You don't say how much track time you have which is why I mention the overdriving part. Some people think the harder they push the tire, the faster they are when the tire is only going to take so much slip angle and heat and after that get "pissed off" and start to chunk and wear like hell. Like one other thread starter put it do you mean chunk or delaminate which would be another issue maybe.

Barry H.

 

How about alignment settings or suspension?

What about which track? Ambient temperatures Etc?

 

Sorry that I wasn't more informative...

These were on my '99 stock dx hatch...

Chris, this is more of the outer tread blocks starting to seperate from the tire not just some rubber that has been picked up. Although I wish it was just that...

Apex, my track experience is small (only about 4 events) and the other events were all on SO-3's. The azenis were a little different in that, in my size, didn't stick as well when they got hot. Although I was trying to hang with more powerful cars (read: pushing the crap out of the car!) and therefore just could have been overdriving the tires. I just seemed that the more I slid the better the lap times were...

At least azenis in this size are cheap.

Thanks for all the input and for not flaming...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97ShLude &raquo;</TD></TR><TR><TD CLASS="quote">Chris, this is more of the outer tread blocks starting to seperate from the tire not just some rubber that has been picked up. Although I wish it was just that...
</TD></TR></TABLE>

Wow, that sounds really bad/unsafe. Take a picture and send it to Falken (and post it here!)

-Chris

 

Perhaps you need a camber change. As for tire pressures, you should just buy a pyrometer and measure three temps across each tire when you come into the pit lane. Costs about price of one tire (and lasts a lot longer as you can now imagine), and you can figure out what pressures should be front and rear as well as camber. Buy something like this:



And record your setup info on these:


And you can buy them here:
http://www.ioportracing.com/Me...e=TTE

You can always learn from others what to run in terms of tire pressures and camber, but measuring your own tire temps will make you faster, save on tire wear by making the whole contact patch work, and teach you a lot.