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How does tyre performance effect racing?

The tires are making some of the riders miserable, imo. During the 500/990 era, feel was about as important as outright performance b/c the 500s were difficult to ride, and the 990s were all about late braking and fast exit speeds (until they developed the 22L bikes). Imo, Bridgestone measure the grip achievable with a contact patch of x and a rubber compound of y. Those two variables create z cornering g's. From there, the engineers decide how hard to make the carcass in order to control the flex and temperature. The result is very hard tire carcasses that only some riders can really make use of.



As Cal Crutchlow has said, everything is the opposite with MotoGP tires. If you lack grip on a Pirelli, you back it off a bit to control the tire temperature and to reduce carcass deformation. If you lack grip on Bridgestones, you attack the corner to get a bit of flex and build some temperature. B/c you are always attacking on Bridgestone tires, it is very difficult to tell when they are about to let go. Many riders have complained about that as well.



Should they change philosophy? Yes. Will they? No. If riders can't easily make he jump from other series, they need to change the tires. MotoGP must siphon the best talent from other series. The current tires are making it very difficult for the reasons Crutchlow cited.



It's really not about making tires that go off. These tires are about as fast as Bridgestone can make them, and they last the tire race distance. They need to make the tires predictable and improve the feel, but they are unlikely to do so b/c it might reduce performance and put MotoGP in WSBKs crosshairs. A lot of people don't realize this, but the Flamminis eliminated the tire war so they could make the tires better. The old tire war in WSBK had many production-relevant restrictions. When they hired Pirelli, they knew they would eventually get the Pirelli-version of a MotoGP prototype tire. Judging by the lap times, I'd say Pirelli is getting pretty close. If Bridgestone can't offer softer tires with better feel, they should at least offer more options for carcass construction to that team owners don't end up with a Marco Melandri or Toni Elias situation on their hands. Those guys are proven GP winners, yet they can't make the Bridgestones work properly.



Good post Lex.
 
What about qualifying tyres? Do you miss them and do you think they add value to the spectacle?



I recall that often riders who were at the back of the time sheet would end up right at the front off the grid just because they had a talent for maximising a qualifying tyre. Now days the grid placings are probably not to dis-similar to the race results as far as the guys on the front 2 rows mostly end up at the front of the race and the guys at the back stay there as opposed to the fast qualifiers and slow racers making their way backwards and creating a battle for the fast but poor qualifiers as they make their way forward.



For all the issues we have witnessed, discussed and yelled about with the 800's perhaps the problem has not been with the bikes and is really one of Kropotkin's 'unintended consequences' that developed out of the control tyre.

Not only yes, but hell yes, for the reasons you stated above. It jumbled things up and added another dimension to race day.
 
Not only yes, but hell yes, for the reasons you stated above. It jumbled things up and added another dimension to race day.



Great thread - thanks Mental.

More tires on the grid would certainly help mix things up a bit.

ONS shouldn't be available and ImO also no qualifiers

Quali's are good for 2-3 lap sprints - so you run the risk of putting a sprinter at the start of real race.
 
just my personal opinion : i think the level of performance of both the bikes and tyres in championships such as wsbk ,bsb,idm,ama are the really the root of "the problem" with the gp tyres for the last years.

from what i've come to understand is that there is always this tradeoff between feeling and outright grip and i've got the impression that this forces the gp tyres to be just good regarding performance alone and that already in a time where smooth ,efficient riding is necessary hence killing a bit of the spectacle for the sake of laptimes.





there needs to be more clear lines between production championships and gp bikes. in my opinion if the superbikes would go more in the direction of superstock with maybe even common track day tyres it would still be possible for gp tyres to be the best performance tyres in the world and source of research. but still they could afford to create tyres that give great feeling above everything else,if that makes sense
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i don't know if it is sensible to compare the two, but i could very well argue that by slowing down the outright performance per fia regulations , f1 has become better and better compared to what it was in on the pinnalce of the michelin/bridgestone wars. in my opinion really it should only be one supplier that is able to present a couple of different compounds that work
 
Great thread - thanks Mental.

More tires on the grid would certainly help mix things up a bit.

ONS shouldn't be available and ImO also no qualifiers

Quali's are good for 2-3 lap sprints - so you run the risk of putting a sprinter at the start of real race.

I wasnt suggesting using q's on race day, i meant it would jumble up qualifying, leading to a more interesting race day. But if somebody like Elias wanted to run them in a race, have at it.At least his sponsor would be happy for 2-3 laps
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But then again, a q tire would only bring Elias within a couple of seconds of the field on race tires.
 
I wasnt suggesting using q's on race day, i meant it would jumble up qualifying, leading to a more interesting race day. But if somebody like Elias wanted to run them in a race, have at it.At least his sponsor would be happy for 2-3 laps
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But then again, a q tire would only bring Elias within a couple of seconds of the field on race tires.





If you still restricted the teams to a single manufacture ie Bridgestone yes. However it is fair to assume that other tyre manufacturers would certainly tailor their product to their teams for greater chance of success, and riders like Elias would have a better shot. While BS is the sole supplier, with little or no development of their rubber, the same riders will always be at the front.



One of my major hopes for 2012 was the scrapping of the single tyre rule, sadly it seems this will more than likely not be a reality.
 
If you still restricted the teams to a single manufacture ie Bridgestone yes. However it is fair to assume that other tyre manufacturers would certainly tailor their product to their teams for greater chance of success, and riders like Elias would have a better shot. While BS is the sole supplier, with little or no development of their rubber, the same riders will always be at the front.



One of my major hopes for 2012 was the scrapping of the single tyre rule, sadly it seems this will more than likely not be a reality.

Yea, unfortunately, the deal is done for BS to continue as sole supplier. I ....... hate it. I hated it then, i hate it now, and i will hate it in the future.
 
I wasnt suggesting using q's on race day, i meant it would jumble up qualifying, leading to a more interesting race day. But if somebody like Elias wanted to run them in a race, have at it.At least his sponsor would be happy for 2-3 laps
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But then again, a q tire would only bring Elias within a couple of seconds of the field on race tires.



Neither was I suggesting using Q's on race day - I'm just sceptical about the sense of allowing someone who has qualified on "special" tires to be at the front of the grid. That's the basis of my being against "allowing a sprinter" to start at the front of a race grid.
 
Neither was I suggesting using Q's on race day - I'm just sceptical about the sense of allowing someone who has qualified on "special" tires to be at the front of the grid. That's the basis of my being against "allowing a sprinter" to start at the front of a race grid.

I dont have a problem with it all, it adds another dimension to the event. Long distance track and field events have hares that set the tone for the race, alot of the time, they dont even finish the event, their job was to pull the train and hopefully set a pace that will result in a record. As long as everyone gets the same opportunity to use the special tires, why not give the guy a chance who is better at a 2 lap sprint a chance at glory. Who knows, maybe something will happen behind him that gives him a chance at actually winning. The sport is very predictable at the moment, add a little unknown to the mix
 
One of my major hopes for 2012 was the scrapping of the single tyre rule, sadly it seems this will more than likely not be a reality.



I don't think another tire war is possible unless Dorna really step up their game with homologation techniques. Imo, Bridgestone screwed it up for everyone when they made the Rossi-Stoner front tire (as it was called) that had really flexible edges that allowed for a much bigger contact patch. How do you regulate that? If the contact patch can be made significantly larger with flexible side-walls and rubber compounds, how are you supposed to control the contact patch with the tire profile?



Even F1 couldn't keep a controlled tire war. They have all kinds of crazy regulations to control lateral flex, vertical flex, torsional flex, and even the expansion of the tire carcass when the car is moving at top speed; but it still wasn't enough to keep the manufacturers interested or to keep things cost-effective and safe. It doesn't look good for the future of tire wars. If F1 and MotoGP both abandoned tire wars, I'm not sure it's possible ATM. They will have to develop new technologies to police the tires.



The only way you can do a tire war ATM, imo, is if the sanctioning body or commercial rights company commissions control tires. They would create 3 carcass constructions for the front, 3 carcass constructions for the rear, and then a dozen compounds. Wet tires and intermediates would be spec. It would be up to the teams to select (let's say) two front tires and two rear tires from the 36 possible combinations for each tire. The manufacturer is responsible for building them to the highest quality and advising the teams as to which compounds and tire pressures will work best in various conditions. It would definitely be a battle between the tire manufacturers, but it isn't technically a tire war per se. Also, the level of tire technology could be a bit suspect. It is unlikely that Michelin, Bridgestone, or Pirelli would give away it's best prototype kit. It is possible; however, that Dunlop would provide Moto2-level technology. Would Michelin, Bridgestone, or Pirelli bother to build Moto2-caliber technology? Could Dorna even police that many variables?



I think control tires are here to stay unfortunately. They cannot be regulated. Even the basic height, width, and profile dimensions cannot really be regulated anymore.
 

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