Rossi's Tyre from Assen

[rac3r]

Bridgestone Tyre's suck!

https://i655.photobucket.com/albums/uu274/rac3r786/RossiTyre.jpg
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Bikes : 2006 CBR125R - 2004 Monster 620ie - 2004 ZX-6R B1H - 2005 Monster S2R 800 - 2011 Street Triple - 2009 Streetfighter 1098 - 2014 ZX-6R 636

[Hyaon]

That one tyre manufactuer rule is really pissing me off now...Let them choose what they want for fooks sake!

"Shinichi Yamashita , General Manager, Bridgestone Motorsport Tyre Development Department, said: “We saw the highest track temperatures of the Grand Prix weekend and the race was run at a very fast pace. The warm temperatures meant that all riders selected the harder front slick, while all but seven riders selected the harder slick option for the rear as well. Unfortunately a few riders experienced a problem with their rear tyre today and we sincerely apologise to those riders affected. We have commenced a full investigation into the matter and I will personally take the affected tyres back to Bridgestone’s Technical Centre in Japan tomorrow where they will undergo detailed analysis to determine the cause of this issue.”"

Not good enough.. riders are losing points because of this crap.
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Mod2 Passed 30/03/2011!
CBF125>GSF650 Bandit K8>B-King 2008+R1 2002

[fozzym]

Thing is though, with the single manufacturer rule all the teams are in the same boat. I don't see Honda complaining about the tyres on Stoner's bike.

Rossi isn't exactly know for being a smooth rider, even when he was in his pomp and winning he was backing it in motox style. At the mo with that Ducati he is pushing so hard just to be midfield that the any tyre is going to get shreeded.

[MarJay]

[supZ]

[rac3r]

Surely if they allowed the teams to choose their own tyres it would make them all more competitive?
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Bikes : 2006 CBR125R - 2004 Monster 620ie - 2004 ZX-6R B1H - 2005 Monster S2R 800 - 2011 Street Triple - 2009 Streetfighter 1098 - 2014 ZX-6R 636

[WannaBeDude]

Zombie tyre ?
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Jogging on, destination living.

[Jim Mc]

They had the same problem in Formula 1 a couple of years ago on the American circuit, temps were too high, only the teams who had alternative tyres were able to take part. End result? F1 abandoned Bridgestone and switched to Pirelli.

[Nexus Icon]

[Wafer_Thin_Ham]

[RhynoCZ]

Don't know why but It seems to me that, 10 years and more ago, it was all more fun to watch and they never had problems like this. Now, when I watch a MOTO GP race on Tv, the all they can talk about are tyres and why some riders had to slow down and so on because of their tyres.

I mean, I just watched a WSBK race, it was like 1996 i think, and all riders went like hell and no one stopped or slowed down just because of tyres.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[P.addy]

I like the exhaust...

[binge]

Superbikes.

[symonh2000]

Bring back the 500cc two strokes.
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Four strokes is two strokes too many.

[supZ]

[RhynoCZ]

Well, performance increase was inevitable of course and I think that the next step is to try something new, like when they came up with radial tyre.

I don't know if it's the same in production sector as on a race track, but I've read an article about 300km/h road legal bikes and some reader asked why they don't make a tyre with more rubber on it so you wouldn't need to change them that early. The answer was, that it's very difficult to make a tyre that would be capable of 300km/h and stay stable and less material you have, easier it is to make a tyre like this.

So my point here is, that not only the power but the speed is limiting factor, if we're talking about tyres.

Maybe I'm completely wrong.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[RhynoCZ]

[Acemastr]

[Frost]

Wear is also an issue as the diameter of the tire would change a great deal seriously effecting the gearing and geometry of the bike.
These days with asymmetric tires it should be no problem to make one that is as grippy as possible and wears evenly on any track. Random lumps coming out is a manufacturing / design defect for sure. It's also symptomatic of the bike and the way the rider is treating the tires.

https://www.eternaltides.com/miscpics/rossi_tire2.jpg

That was Rossis tire on a yamaha not so long ago. Clearly the yamaha is hard on front tires as the riders make up time on corner entry. The Ducati is hard on the rear as it makes up it's time on corner exit. Something that seemed very noticeable when Cal was behind the 3 Ducatis.

[robbieguy2003]

Without much doubt, this was a combination of a manufacturing defect, three riders - Vale, Ben and Hector all had this issue, although Ben and Hector suffered near the end.

Lumps like this are generally a defect on the tyre. For a 'working/none defecting' tyre to get so hot, chunks that size start falling off would mean the rider would have pretty much no rear grip - constant spin ups. Vales, Bens and Hectors tyres went pretty suddenly, it was holding pace with good grip until it went.

Quite a few riders came off, so with them all going full distance, it's possible some others may have suffered with this issue as well.
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Current Bikes: Honda CBR 600RR - '07, Suzuki GSX1250 FA ST '11
Old Bikes: Suzuki Intruder 125 LC - '2001, Honda CBR 600F - '92, Honda CBR 600RR - '03

[shooter]

So are they kind of dual skinned? I think it's quite impressive the tyre didn't blow with that much damage.

[LeeR]

I like what Rossi said in the run up to the race at Assen:

"Unfortunately we have some problems with the lines I want to take with my bike, I want to take one line and the bike wants to take another."


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[Walloper]

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