This Tyre rule

<div class='quotetop'>QUOTE (roger-m @ May 18 2009, 01:33 PM) <{POST_SNAPBACK}><div class='quotemain'>because the mods edited the title after my warning

Only you would know that, I only get a hour a day on here, unlike some!

<div class='quotetop'>QUOTE (michaelm @ May 18 2009, 01:29 PM) <{POST_SNAPBACK}><div class='quotemain'>Now it is a spoiler thread my point is that the single tyre regulation does not appear to favour last year's top 2 competitors, both of whom are being denied their preferred "hard" tyre choice, which apparently only they can effectively utilise. I find it unusual that lorenzo who is no doubt talented can achieve a better set-up than valentino, which he appears to have now managed at 2 races.

I would agree that like any previous supposed dorna cost-cutting measure it is unlikely to have cut costs.
I got to say mike im bloody impressed in how quickly and effectively lorenzo has adapted to this bridgestone control tyre While Rossi and stoner are still very much the guys to beat as they have been the past few seasons its true to say i think that both would rather have compounds that are no longer available.

<div class='quotetop'>QUOTE (bonnielass @ May 18 2009, 08:35 PM) <{POST_SNAPBACK}><div class='quotemain'>Only you would know that, I only get a hour a day on here, unlike some!

well, as they say, opposites attract

<div class='quotetop'>QUOTE (somedamnwriter @ May 18 2009, 01:37 PM) <{POST_SNAPBACK}><div class='quotemain'>well, as they say, opposites attract
yeah.
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<div class='quotetop'>QUOTE (roger-m @ May 18 2009, 01:40 PM) <{POST_SNAPBACK}><div class='quotemain'>yeah.
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<div class='quotetop'>QUOTE (roger-m @ May 18 2009, 08:40 PM) <{POST_SNAPBACK}><div class='quotemain'>yeah.
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buy bonnie a good, strong helmet

<div class='quotetop'>QUOTE (roger-m @ May 18 2009, 12:15 PM) <{POST_SNAPBACK}><div class='quotemain'>yeah, it has to be cheaper for a team to have the tyre built for the bike than build or re design the bike to suit the tyre.

Everybody wins with the tire rule because

The tires are supplied free to the teams and the factories lay their budgets out well in advance. They build and refine their race bikes regardless of any technical regulations; they may spend more energy on a different part of the bike with a particular set of technical regs, but the $ is the same. Bottom line, they did not spend any extra money engineering the bike for the tires, they spent the same amount of money they set aside in the budget. Remember, the engineer gets paid the same salary regardless of whether he's engineering a bike to suit a Bridgestone or a Michelin, etc.

In the end, it saved everybody a lot of money, including Bstone.

<div class='quotetop'>QUOTE (Parc Ferme @ May 18 2009, 09:27 PM) <{POST_SNAPBACK}><div class='quotemain'>Everybody wins with the tire rule because

The tires are supplied free to the teams and the factories lay their budgets out well in advance. They build and refine their race bikes regardless of any technical regulations; they may spend more energy on a different part of the bike with a particular set of technical regs, but the $ is the same. Bottom line, they did not spend any extra money engineering the bike for the tires, they spent the same amount of money they set aside in the budget. Remember, the engineer gets paid the same salary regardless of whether he's engineering a bike to suit a Bridgestone or a Michelin, etc.

In the end, it saved everybody a lot of money, including Bstone.

if that is so, then why do i feel cheated by dorna?

As much as the one supplier rule goes in theory I think it is stupid. In reality it is working because no-one but Bridgestone was putting out to supply race worthy tires. Michelin had tons of time to work out their problems but they didn't and it was beginning to decide races. There was no choice. It isn't quite true to say its made no difference it has.

I'm to lazy to read the thread from the beginning, but I have a question, is Bstone supplying an "intermediate" tire?

I ran across this on superbikeplanet.com

<div class='quotetop'>QUOTE <div class='quotemain'>Bridgestone have not yet supplied a two- compound tyre, and of course they won't make inters, even though the rule book mentions them.

So if you like the tires Bstone is making then your lucky, if you don't then its a big 'too bad'? Geez, I wonder who might they had in mind when developing tires? Fish, any insight here?

<div class='quotetop'>QUOTE (Jumkie @ May 18 2009, 04:54 PM) <{POST_SNAPBACK}><div class='quotemain'>I'm to lazy to read the thread from the beginning, but I have a question, is Bstone supplying an "intermediate" tire?Nope. "Rain tires" (these can either be molded rain tires or hand-cut slicks. If they're hand-cut, bridgestone needs to do it and has to do it for everyone.) and slicks - nothing more.

Like Hayden (I believe) mentioned in his interview, they aren't running dual-compound rubber any more - no more "soft on one side hard on the other" was the specific sort of tire that he mentioned.
<div class='quotetop'>QUOTE (Jumkie @ May 18 2009, 04:54 PM) <{POST_SNAPBACK}><div class='quotemain'>I ran across this on superbikeplanet.com
So if you like the tires Bstone is making then your lucky, if you don't then its a big 'too bad'? Geez, I wonder who might they had in mind when developing tires? Fish, any insight here?
It's more cost-cutting on Bridgestone's part than anything else. As a side-effect a rider or bike with different needs than Rossi and Stoner can have some serious problems - Elias is/was carrying several pounds of ballast at the back of his bike to try and get some heat into them. He's small, has a weird style, and is siting on the bike least-adapted to the stones on the grid. One of the biggest differences between the stones and the Michelins is a need to bias weight further backwards with the Bridgestone tires. This both makes the rear work and lets the front last. Recall Pedrosa's destroyed front tire earlier this season and Rossi's late-race fades due to a worn out front early last year (Qatar, in particular). This could be part of what's troubling hayden as well - he's a long-time michelin runner, and I believe one of his problems has been getting heat into the rear. (ex). Maybe he hasn't adjusted to carrying weight further back on the bike? Rather than spend money developing or thinking about intermediates and working up custom tires for each circuit with different compounds on each side to suit the right/left nature of the circuit, they make rain tires and slicks with universal-enough compounds that they can bring the same tires to different circuits.

Great reply Matt, thanks.

<div class='quotetop'>QUOTE (halfpint @ May 19 2009, 08:41 AM) <{POST_SNAPBACK}><div class='quotemain'>Blimey - you think you ask a simple question!

Didn't realise there was so much to this tyre buisness. Didn't realise weight would factor into it - kind of explains why my front right tyre on my car seems to ware out more than the others


So you are now telling me that if you have a fat arse and it over hangs at the back of a bike they have an advantage over some skinny little runt who has to sit right up to the handle bars cause he can't see over the visor just because they can warm the back tyre up quicker??!! Well you know what rule will come in next! eh! eh! The one like the jockeys where they all carry the same weight. Now that would be funny and interesting
theres nothing simple in motogp
there were some cracking pics of rossis bike on michilins and then on stones on the forum a while back. these pics clearly showed the rear wheel was quite a bit further forward than it was when using the french rubber highlighting the need to get more weight into the rear.

As for the front tyres on your car, they wear faster than the rears because they are doing more. most cars these days are front wheel drive so these tyres not only have the steering forces but also the driving forces. plus most cars still have the heavy engine at the front so they are coping with most of the weight too.

<div class='quotetop'>QUOTE (halfpint @ May 19 2009, 11:02 AM) <{POST_SNAPBACK}><div class='quotemain'>I understand that but didn't twig it would have the same effect on a bike - figured the weight was distributed evenly - explains why the ex used to enjoy me been on the back of his bike (hanging off of it 90% of the time) and then complained about being skint and not able to get another rear tyre. I seemed to have been enlightened today
motorbike tyres and cars tyres are very different. Car tyre walls move and flex a lot in cornering where bike tyres i believe stay very rigid yet the contact patch area is designed to deform to creat a larger contact area. Im no expert in the area it has to be said

Read this on superbikeplanet

<div class='quotetop'>QUOTE <div class='quotemain'>Ryder Notes: Random Thoughts
by julian ryder, back home in the uk now, thanks
Tuesday, May 19, 2009
Random Thoughts from France's gourmet pork-fat city:

Valentino Rossi's three-stop strategy bears a little examination. Like everyone else, he started on wets then changed to slicks. He crashed at Musee, came in and got back on the wet-shod bike. Only it now had a slick in the back. Don't the rules sate that you must go out on different tyres from those you came in on? Well, sort of.

The English version uses the phrases 'wet tyre' and 'dry tyre'. It also uses the phrase 'intermediate tyre' but Bridgestone don't supply any. The French version uses the word 'pneus', that's the plural, as in 'tyres.'. As in all motorsport, the regs were written in French and that's the version that takes precedence. The court may wish to consult records in the case of Read versus Ivy.

Yamaha's post-race releases stick by their claim that the rules require only one tyre to be changed, Rossi said the same in his press de-brief; Burgess and Brivio said they don't speak French.

As Valentino only finished 16th, no-one bothered to take any action. If he had scored points, that might have changed. Whatever, just as in the case of FIM versus WCM, the regs are again found wanting, at least in their English version. LINK

Phantom yellow flag anyone?

(Where is Lex when you need him, and I'm sure Fish, our resident tire expert will chime in and assure us it was all well within the rules).

<div class='quotetop'>QUOTE (Jumkie @ May 19 2009, 04:36 PM) <{POST_SNAPBACK}><div class='quotemain'>Read this on superbikeplanet



Phantom yellow flag anyone?

(Where is Lex when you need him, and I'm sure Fish, our resident tire expert will chime in and assure us it was all well within the rules).
Shut it !!

<div class='quotetop'>QUOTE (roger-m @ May 19 2009, 10:42 AM) <{POST_SNAPBACK}><div class='quotemain'>Shut it !!

was and you bit.