Streetstock tyres..

[Tim 39]

I read on the MNZ website that they have taken the saving their own arse approach to this problem. Streetstock bikes now have to run on road legal tyres (expensive ones) even in the dry. Not the best outcome for the 70 or so South Islanders who now all have to buy new tyres at over $300 a set!

[k14]

Well rather than critise their ruling maybe you could suggest a better way to do it?

I read their ruling and totally agree with it. No other way to do it fairly.

[Tim 39]

Well rather than critise their ruling maybe you could suggest a better way to do it?

I think they need to give the riders a period of time to be able to get and fit new tyres. at the moment they don't have anywhere near enough tyres in the country, so theyre going to have a big problem at sportzfotoz cup at levels if only 10 or so people are allowed to ride (biggest event all year for the streetstock riders)

my basic opinion is that if the changes were to be effective immediate, they could have warned the riders so they could order some new tyres in, or given a change over period.

[oyster]

This is a big subject with a long history. Tim has in fact contributed a lot through our collective voices to MNZ, and is not alone in his disappointment that major concerns, including many safety matters, have not been addressed by the MNZ decision. We have appealed for a review of the new rules, on the basis of poor consultation. The board have accepted that and Johnny Hepburn, Board Member, Road, announced testerday that the existing rules are extended for at least two months until a "round the table" meeting between the riders/supporters and MNZ is held. This is scheduled for 1st Sept. I will be attending this meeting and anyone with views on this subject are welcome to post up or PM me on their contributions.
Peter Jones
Junior Road Race Coordinator
Motorcycling Canterbury

[Tim 39]

This is a big subject with a long history. Tim has in fact contributed a lot through our collective voices to MNZ, and is not alone in his disappointment that major concerns, including many safety matters, have not been addressed by the MNZ decision. We have appealed for a review of the new rules, on the basis of poor consultation. The board have accepted that and Johnny Hepburn, Board Member, Road, announced testerday that the existing rules are extended for at least two months until a "round the table" meeting between the riders/supporters and MNZ is held. This is scheduled for 1st Sept. I will be attending this meeting and anyone with views on this subject are welcome to post up or PM me on their contributions.

good to hear, thats the part I felt they were lacking. I felt that they just made the decision on behalf of everyone and said thats the way it is. Now the riders get enough time to sort out their tyres and have some warning of what will be happening.

[Tim 39]

This option is arguable, but I believe long term it would be cheaper to make the use of wets both safer and cheaper. with the new rules a streetstock rider will spend approximately $900 on tyres. A set of rims and some second hand RS125 wets would cost less than that, and wets are better in the wet and slicks are better in the dry. You're also teaching how to make decisions where it doesnt matter so much, rather than waiting to go 125 or SV to learn to make those calls.
negatives:
the "old" slick rule is hard to police, and so would the "old wets" rule. The expense (arguably) is higher

[MOTOXXX]

get yourself a set of TT900 tyres if you can find them. They are the shit.

you can ride em just as hard in the rain as in the dry. there is nothing better for the 150s

[Tim 39]

get yourself a set of TT900 tyres if you can find them. They are the shit.

you can ride em just as hard in the rain as in the dry. there is nothing better for the 150s

I rode on tt900's at levels, and got the back stepping out under power on an FXR!!! Bridgestone battlax make some tires that fit and work about as well

[Billy]

While I have to admit to not having ridden on the slicks in question I would far rather be on a new set of TT900s than a 2 yr old set of slicks.Unfortunately TT900s are going out of production as I understand because only NZ and Australia are using them and we dont use enough to warrant the cost of manufacture.However tyre choice should be just that!If you want to run on 2 yr old slicks that should be your choice Provided its dry,If however it were to rain then I fully agree all bikes should be either on full wets or a dot approved road tyre NOT grooved slicks.The problem I see there is that its hard enough too find spares for the RGs already so where are we gonna find 70+ pairs of wheels and discs? and also are the wets used on them going to have too be 2 yrs old as well?Craig Shirriffs used my bike to do the testing for MNZ and he didnt really even want to ride it with the slicks fitted(wrong profile and in most cases old slicks are unpredictable).The upshot of the test was that both Pirelli and Bridgestone have a tyre available at a reasonable cost that are equal if not better than the Dunlop TT900s(once again personal choice)Im confident if someone were to approach one of the tyre importers with an order for 210 sets of tyres (thats 3 sets each for the south island riders alone per year) they would be only too happy to supply them at a better rate.(The price I was quoted on a pair of Bridgestones through my local shop was almost half the price of TT900s).Or perhaps maybe even run on a controlled tyre.As I said at the start this is only MY preference and Im sure other people have theirs.Dont forget MNZ only have to put rules in place to stop us idiots from hurting ourselves needlessly.Cheers Billy

[Tim 39]

I didn't realise pirelli made a suitable tyre also. 2 year old slicks I have found to be fine, I was using them on my 125 throughout last season, and Glen's are 3 years old! FXR rims do fit rg's im told but im not 100% sure. I guess other than making wets legal, if they have to run on DOT tyres then this could be a chance to get all the tyre manufacturers into the class as well, like the "big classes" there is then good potential to find cheaper tyres or even sponsorship to get all the brand names out there. The other option is running a control tyre, this is in the spirit of streetstock being everything equal and this could bring the tyre cost down, however riders wouldn't get the chance to gain the experience of making tyre decisions based on feel of the different tyres etc

[Sketchy_Racer]

I believe that people should stop worrying about slicks in wet crap.

Your on a 150CC motorcycle, top speed of maybe 160.... Tyres that narrow arent going to hydroplane.. not at that speed.

It's a load of crap. let people run what they want. If they don't care about using slicks in the wet, then so be it...

Its just yet another pain in the arse thing that is making the 'entry' class more effort than its worth.

As mentioned, the only good deacent tyres for these things clock up and easy $500.. and if you want the best... Upto $900

The bikes barely cost that much, but thats the choices.

[MOTOXXX]

I rode on tt900's at levels, and got the back stepping out under power on an FXR!!! Bridgestone battlax make some tires that fit and work about as well

realy?

i rode 2.5 seasons on tt900s at manfield and taupo and never had any of those problems. what pressure were u running them at

[Tim 39]

realy?

i rode 2.5 seasons on tt900s at manfield and taupo and never had any of those problems. what pressure were u running them at

I was running about 30PSI for memory, I think the problem was that I was a bit used to how hard I could push my 125. I'm shocked to see how quickly they wear out too, I noticably wore them out over two days riding!

[vtec]

Well in the vic series they allow up to 250cc fourstrokes. And I used Dunlop GPR 70's, and a Bridgestone Battlax BT090 on my CBR250RR. These both were great. And my dad has just fitted out a CBR250RR with a Metzeler Racetec on the front and a Dunlop GPR A10 on the rear, that combo will be better than what I raced on, can't wait to try it.

With regard to the 150's you could probably run a front GPRA10 or Racetec front on the rear, and then work out something else to put on the front if you can find anything decent that fits. I know Glen ran a GPR70 front on the rear of his KRR150. That would work brilliantly in my opinion. If they take a 120 on the rear, let me know, I've got plenty of awesome Dunlop Sportmax GP fronts that would be better than anything else provided you give them a chance to warm up.

[FROSTY:Me]

From my Personal prospective as a codgy old racer type Im not convinced that slicks work in the rain. Yep I understand about the tyre compound and all that but in a genuinely wet meeting I just can't see how its possible for the tyre to work.Slicks are NOT desighned to work in the rain. My concern is that the people riding these bikes are inexperienced racer who don't know better than to go out in pissing rain on slicks. The talk that they are "only" doing 160 km/h to me is frightening.
Ignoring the clear financial issues of buying treaded tyres instead of using donated slicks A good set of treaded tyres should last 2 full seasons.
If Im ill informed I apologise
The last thing I or Im sure any other racer would like to see is this fantastic race class crushed by financial constraints