A tyre question

Gregz

Gregz

Members all, Please do not allow me to deduce my own problem as I have no clue,

Here is the problem, The 07 SD came with zero miles on it, I broke the pumpkin in with love and according to instruction for the most part,

The stock tyres had 3,200 miles on them D-208 RR, the rear was nearly slick and the front was a wide margin behind it in the wear department, approximately 40% tread depth remaining,

Changed both front and rear to Pirelli corsa III's loved the feel of the tyres, I had noticed at 5-600 miles considerable wear and tear on the rear,

Now I have 4,800 miles on them and the rear is slick...no tread at all, the front has 70-80% left, I do not know why this is,

I am hard on the gas at apex and exits, on the gas hard allot of the time, I check tyre pressures every other day.

I had two track days also, I have read what pirelli says they will do, 3000-4000 projected miles from these I had read in an article.

in that same article they had stated that the front tyres were a different rubber compound and the rear is made with 3 different compounds.

1,600 miles to me is a pretty short life, but I have ordered another one today to replace it with, usually I replace both front and rear regardless of the condition of the front, this time I will do it cos I feel tight.

I had spoke to one of the leading hyper sport tyre vendors in the area, (also a highly skilled road racer) he did not think it was suspension or rider error as much as the basic

characteristics of the SD and its torque rich engine, Please give me all that you have so I may make an informed decision on what to do this spring.

I expect to catch some heat on the weight thing but it is ok, slash away with yer nasties too.

Thanks In Advance///// Oops looking fer the crapper.
topendz

topendz

Hi jehadjoe.

I have never had any tyre brands give such poor life.
My best deduction is one or both of 2 options:

1) that particular tyre (or set) was mis-manufactured, ie is faulty
2) you are running very low tyre preasures, which would cause high heat and larger surface wear area

Other than that Joe, my only thought is that you must always ride at high throttle on extremely sharp road surfaces. We have such roads in the Snowy Mountains of NSW 'Sydney'. They are sharp gravel layed in tar, and are seldom used by traffic. They tear apart tyres in half the time; my R1 208's barely lasted 2000kms (about 1600miles). If this is not the case I have no idea.

Hope others can help.

Greg
9nine0

9nine0

I doubt the tyres are faulty or the tyre pressure wrong as Joe checks every other day by the sound of it. Suspension setup can affect tyre wear also. If you ride hard, plus two track days and your suspension isn't setup correctly for your weight this seems more likely to mean normal wear and tear for this compound tyre and your situation.
collyer

collyer

Post missing.

Gregz

Gregz

Hey all, I have many deficiencies, one is my lack of knowledge in the PC dept. I will learn this thing of taking and posting pics,

I like to ride right up against the tank, always have. When I ride aggressively I get real low to everything, like a Brazilian tree frog.(I can talk like a Brazilian too), Uhh....if no one minds,

but my head and chest is as far down as I can get, what my thought was, if my suspension was that far off, could I go as fast as I do with as much comfort as i feel.

To me, I am far more comfortable on this bike going at speed as ANY other one I have ever had.

I was out in my shop yesterday with a bright led powered light making a very close inspection of the culprit, this tyre has worn the most evenly as any one I have ever worn in Oklahoman.

Usually the tyre isa (Italian) flat on the top, cos we have hardly any curvy roads close to me, this one is perfectly round. I will have my suspension checked and adjusted by the racer that is selling me the tyre, and see if that helps.
Gregz

Gregz

Joe - if you're wearing the tyre evenly, then the manufacturer has done his homework. The triple-compound rear is supposed to be soft on the shoulders & firm in the middle, to compensate for the amount of time that a bike is upright vs. turning. Personally, I always buy the stickiest DOT tyre (Metzeler M3 or the old Rennsport RS1) and a sticky Sport Touring or Sport tyre on the back. This way, when it's time to change the back, the front is equally trashed. 98% of roads in Texas are like yours - flat, straight, boring - trails to the minimal twisty bits.

tyre tyre tyre

BASTARDS! I spell the word for the rubber hoops on my wheels T - I - R - E, not TYRE. Auto spelling indeed!!! In Texas, it's a "TAH-UR".
DMNTD

DMNTD

Okay, i just came back from the bike shop, as I was rolling the tyre into the shop I noticed some shiny metal bead showing through the micro thin rubber,

I was like Woah......rubbing my eyes wondering how could this be.

when I go to the dragon in NC, we always see these kamikazes that wear their tyres all the way to the bead, and just haul ass too.

I questioned all the racers there at this bike shop and had them look at the tyre, (Oohh they had black wheel weights too)....

Humm....yep, I have seen that before, they would say like it was no big deal, and they all had the same thing to say ,,,,that must be off of a twin...looks like you were using it up.

I will take the bike to someone soon enough and try to dial in all of my adjustments, so far all I have dicked with is the spring preload in the rear. I want to clean all of the funk.

Oh yeah, If you don't want this type of action just coast everywhere you go, that will help stretch out the life I think
ShadeTheChangingMan

ShadeTheChangingMan

I beg to differ on several grounds of assumption:

1) I expect Joe has not altered his suspension too much outside of KTM spec.
2) Suspension setup plays little part in "even" and "flat" or "centre" tyre wear.
3) Blistering and ripping is due to tyre pressure and hence compound temperature and less by suspension

Personally, I bet Joe, your situation of wearing a Rear tyre 90% in 1600 miles, (2500kms) is due to a number of unfortunate events; namely, the roads you ride, your riding, your weight, your hard throttle antics, and maybe even a bad tyre.

My suggestion is to go back to your shop and have a chat with them.
Also have a read of forums and reviews to see what people think about Pirelli Diablo Corsa III

Here is a starting point:





there are many more, but I find that most forum threads are still left at"....love them, but I am not sure how long they will last..." looks like they are too new for opinion to be noted.

GregZ
Astroboy

Astroboy

GregZ, I have read and reread all the literature I could find prior to my purchase of them, and as far as "A # of unfortunate events" Oh no, these tyres are the cream of the crop, when I want to have fun, do I think about trivial things such as money,, Hell no !! I do not, I throw caution into the wind cos I like fun, just like I like bikes, If you were one of my riding mates and we pulled over to the side of the road, and you asked me.....joe,,, would you trade this $100,00 bill for all of those corners back behind and in front of us today,,,,as to save your tyres for another day, I would say no, hell no. so I feel like this is the price that I pay to play. If I did have premature wear and tear, the way folks are here where I am located,,,, they would larph at me and say get the hell outta here you jack ass ....joe!! These are dot racing tyres as far as I am concerned, their is no life expectancy warranty. the way I am is.....if you don't like the service do not go back, even if you bitch about something that is just a better reason to give you shit service if you do ever come back. I figured that someone in here would know of this problem, same bike same tyre, same riding style with a fat ass, I dunno, without a trimmer whole package I would look funny without it.....hehe
Astroboy

Astroboy

I'm hearin' ya Joe!

Funny enough - agreed on all points. Ditto on the dealer thing too: I usually travel >20miles to shops when there are many within 3miles of my place - just for service and product quality and price.

I am thinking the same as you on this one.. they are race tyres and that is how they last. I ran Pilot Race tyres for a few thousand miles and loved them even though they had a short lifespan on the road.

If anyone read or have 1st or 2nd hand experience with the Corsa's it would be great to hear. I also have a vested interest with these tyres; as they have been recommended by a friend and they are/were planned to be my next ride - depending on feedback.