Tyres for F2?

[sinfull]

3-7 Tyres
a. Tyres V, Z or W rating must be used. Only tyres on
general sale to the public in New Zealand as road legal fitments will be permitted. For
all events other than endurance races only one set of tyres per meeting will be
allowed for races counting towards the MNZ Sports production Championship.


Ok not really one to read instuctions but thought i'd best read apendix A
Soooo, does this mean no slicks in F2 club racing ?

Or am i reading the wrong bloody instructions

[GSVR]

Running at club level in F2 slicks are allowed but if you do nationals SS you must run DOT approved tyres.

You got some wets as DOT tyres are better if the meeting is called wet as you wont be able to ride on slicks!

[sinfull]

Running at club level in F2 slicks are allowed but if you do nationals SS you must run DOT approved tyres.

You got some wets as DOT tyres are better if the meeting is called wet as you wont be able to ride on slicks!

Thanks Gary, can't make head nor tail out of that gibberish on the mnz site !
Too many rules unless another rule says otherwise twists in it !

Got a set of wets (just need spare rims cause i'm lazy and stressing about tyre changes 20 min before a race aint what it's about for me)

And i hate yellow grrrrrr yuck

[Billy]

Running at club level in F2 slicks are allowed but if you do nationals SS you must run DOT approved tyres.

You got some wets as DOT tyres are better if the meeting is called wet as you wont be able to ride on slicks!

WRONG,If the meeting is declared wet,Tyres are at the riders descretion.IE If you want to run slicks in a monsoon,you can but its on your head

[GSVR]

WRONG,If the meeting is declared wet,Tyres are at the riders descretion.IE If you want to run slicks in a monsoon,you can but its on your head

Yep Rule 3-7b In the event that the track is damp/wet the choice of tyre is at the discretion of the rider.

I know Cookie brought this up in another thread after being sidelined in an F2 race at Vic Rnd 1. Maybe I should have said it would be very unwise to go out on slicks if its wet and risk wrecking your bike and someone elses or injurys.

So what is the actual point of declaring the meeting wet? Is it to allow riders time to change tyres. I know this happend this year at Puke in one of the Superbike races but didn't follow what the procedure was.

[codgyoleracer]

Yep Rule 3-7b In the event that the track is damp/wet the choice of tyre is at the discretion of the rider.

I know Cookie brought this up in another thread after being sidelined in an F2 race at Vic Rnd 1. Maybe I should have said it would be very unwise to go out on slicks if its wet and risk wrecking your bike and someone elses or injurys.

So what is the actual point of declaring the meeting wet? Is it to allow riders time to change tyres. I know this happend this year at Puke in one of the Superbike races but didn't follow what the procedure was.

Probably as much to do with club liabilty than anything else, - discretion of the rider to chose "or maybe take a risk" on what tyre is most appropriate. This can play a strong part in the result of a race if it is held in marginal conditions that may either dry out or get wetter.
Glen

[GSVR]

WRONG,If the meeting is declared wet,Tyres are at the riders descretion.IE If you want to run slicks in a monsoon,you can but its on your head

Chapter 22

4.Should the steward call the race wet then the rider, may use a DOT/European approved road legal tyre or a full race wet weather tyre marked not for highway may be used. (No slicks or grooved slicks allowed).

Contradiction but this will overide the other rules!

Edit: Not really a contradiction as in Production Supersport you aren't allowed to run slicks. But as Sinfull is running to typical F2 rules if he runs slicks and the race is called wet he won't technically be allowed to race unless he puts some wets or DOT tyres on.

[Billy]

Chapter 22

4.Should the steward call the race wet then the rider, may use a DOT/European approved road legal tyre or a full race wet weather tyre marked not for highway may be used. (No slicks or grooved slicks allowed).

Contradiction but this will overide the other rules!

Edit: Not really a contradiction as in Production Supersport you aren't allowed to run slicks. But as Sinfull is running to typical F2 rules if he runs slicks and the race is called wet he won't technically be allowed to race unless he puts some wets or DOT tyres on.

Yip and it only gets worse when a meeting is declared wet when theres absolutely no standing water

[k14]

Yip and it only gets worse when a meeting is declared wet when theres absolutely no standing water

Or its declared wet at 9am after a brief shower and an hour later its perfectly dry again. Then at 4pm another shower comes over and the meeting hasn't been been declared dry (I don't even know if they do that) and everyone has to finish the race on slicks!

[Biggles08]

Chapter 22

4.Should the steward call the race wet then the rider, may use a DOT/European approved road legal tyre or a full race wet weather tyre marked not for highway may be used. (No slicks or grooved slicks allowed).

Contradiction but this will overide the other rules!

This rule is only for the Streetstock 150. No such rule for F2. It is completely up to the riders descretion as to what tires they choose to run if it is declared a wet race.

[GSVR]

This rule is only for the Streetstock 150. No such rule for F2. It is completely up to the riders descretion as to what tires they choose to run if it is declared a wet race.

Chapter 22 is the Road Racing general rules so this covers all machines in all classes.

What happens at meetings may not always be inline with these rules but they are the rules.

[Biggles08]

Chapter 22 is the Road Racing general rules so this covers all machines in all classes.

What happens at meetings may not always be inline with these rules but they are the rules.

I believe you are quite incorrect. This particular rule is in context for the streetstock only! Otherwise if you do what you are saying the rule immediately preceeding this one states "No tire warmers are allowed!?!"

Quoted from the MNZ site Here....

22-12-10 Tyres
Gazetted Tyres for 150cc Street Stock Class.
Tyre sizes, 80/90, 90/90, 95/70, 90/65, 100/80, 110/90, 120/80 x 18 TT900, 110/80 x 17 Applies to 150 Street Stock only.

1. The choice of tyre is optional, either a slick or a Dot/European approved road legal tyre on sale to the public. (No grooved slicks, modifications or treatments allowed to tyres).

2. All tyres fitted must be mounted on a corresponding rim as per the tyre manufacturers recommendations of rim to tyre specifications. These shall be gazetted on the MNZ website and up dated as necessary.

3. Tyre warmers are not allowed.

4. Should the steward call the race wet then the rider, may use a DOT/European approved road legal tyre or a full race wet weather tyre marked not for highway may be used. (No slicks or grooved slicks allowed).

5. Wet race: A race if classified as wet, usually commenced in varying or wet conditions, will not be interrupted for climatic reasons and riders who wish to change tyres or make adjustments must enter the pits and do so during the actual race.

6. Should track conditions change due to climatic conditions after a race has started the steward shall stop the race to enable competitors to change their tyres Rule 6-13 will apply. Conditions for stopping and restarting a race Refer Rule 6-13.

7. On safety grounds a steward may stop the race should the conditions be considered dangerous.

[GSVR]

Yep really sorry misread that completely.

So what is the normal wet tyre rule in the superbike regs... And where can I find it.


4 Tyres
The choice of tyres is optional. Tyre warmers are allowed. The tyres used in the first race must be of the same brand and compound specification as the qualifying tyres used to determine grid positions. If the race meeting is wet, then the normal wet tyre rule applies.

Thanks Biggles

Basically it came about by me searching that section for the word "wet"

[Biggles08]

hehe...no worries.
I'm not sure exactly where you find the regs for superbikes....it appears they are usually suplimentary rules specific to certain events as far as I can tell.

I only know the F2 rules mainly because of the mistakes made at VMCC round 1 when the MNZ steward wouldn't let bikes out of the dummy grid that had slicks on after it had been declared a wet race...turns out this was a wrong decision as it "is riders descrection." I felt sorry for those that were incorrectly told they were not allowed to race because they had decided to wear slicks.

[oyster]

Could someone post up from the MNZ rulebook the definitions of
a) Formula 2
b) wet race
c) wet meeting

As I see it:
a) Clubs than run F2 need to have Supp rules with a suitable class definition.
F2 hasn't been in the MNZ rulebook for at least 10 years.

b) and c) Control of a meeting in wet conditions can only be managed via rule 6-13. (As was done in the Super race at Puke in the Nationals)
The only definition of "wet race" is relative to Streetstock, (22-12-10-4,5)and is pretty well the FIM rule.