Ducati Sporting Club UK > Sport > Trackdays & Race Schools > Wets - pressures.....

[Scooter916]

Originally Posted by Chef

Thanks guys

Glyn - so what do pirelli say......

Wets shouldn't be heated to over 50c..........I was told

confused - you will be............;-)

LOL I was told by pirelli Exactly what I posted.. But then again if you read the other thread regarding rosso tyres pirelli are not exactly correct with their statements. Saying that tho I ran my 998 Race bike with the above details at caddy in the wet and had no problems lifting the front whilst still cranked over exiting mansfield, Scared me..... YES it did
If it worked for you nige then great, I know a lot of guys run em from cold and let the tyres come to you, Rather than using warmers and having loads of grip on the first 2 corners then binning it on the third because they have gone cold.
Horses for courses.
Glyn

[arthurbikemad]

9 times out of 10 warmers in the wet are pointless, by the time they are off and you have got to the track the tyres are cold anyway..well so im told by most riders..

[Scooter916]

Yup they are so pointless The Gp and wsb boys use em.......BSB use them and they are on pirelli rubber too,
But as I said earlier Horses for courses.
This is the info I had from Pirelli, Who as it goes Own Metzeler..

These are a starting point - you may prefer slightly higher or even slightly lower pressure depending on track temperature, riding style, suspension settings etc.

Tyre warmers - if you are going to use them, buy a good quality warmer with thermostatic control.
We recommend you use warmers for rain tyres as well as "drys".

Set temperature to 75 degrees C for 1 hour, then set pressures to:

Racetec's - 2.2bar (32psi) front and 2bar (29psi) rear
Rain Tyres - 2.3bar (33psi) front and 2.1bar (30psi) rear (I would recommend K1 compound front and rear for Rain tyres) - Only use rain tyres when there is standing water on the circuit. A drying line will destroy the tyres very quickly.

Tyre warmers aren't critical for either tyre, but you will get better performance throughout the life of the tyre if you do use them.

Regards,

Jim Worland
Product Manager
Metzeler Moto UK

[Chef]

Thanks again for all the advice

Didn't realise it would create so much discussion!!

I won't be using warmers as I have the diamond ones without the thermostatic control so I think they're set to 90c - which is too hot I think

I've got a K1 & K2 BTW

I think the best thing will be to take both sets of pressures and experiment......he says diplomatically....;-D

Cheers

Chris

[arthurbikemad]

Originally Posted by Scooter916

Regards,

Jim Worland
Product Manager
Metzeler Moto UK

I know they do, and if your as good as they are then fair play...


Sorry I was referring to most mortals that are not lined up on the grid....



Or I guess if you are a mortal with warmers on and you have an off at least you wont be able to blame tyre temp...

[Scooter916]

Originally Posted by arthurbikemad

I know they do, and if your as good as they are then fair play...
Sorry I was referring to most mortals that are not lined up on the grid....

Or I guess if you are a mortal with warmers on and you have an off at least you wont be able to blame tyre temp...

Why would mere mortals Need wets, You dont need them for a trip down the local cafe to swoon over your mates bikes, If your going on track to race or purely for enjoyment its all about "Getting it right"
My point wasnt that Im a racing god, But that if Pirelli who design the tyre and go through the R&D to giving specific spec for optimum use of their product.
Why wouldnt you use them ???? is it because You know better than the manufacturer or you think you do???

Chef
You can still use your warmers with their tyres, There is a formula for your very type of warmers, Reducing the time with a higher heat, My notes are at work tho so i would have to find them tomorow.

[arthurbikemad]

Originally Posted by Scooter916

Why would mere mortals Need wets, You dont need them for a trip down the local cafe to swoon over your mates bikes, If your going on track to race or purely for enjoyment its all about "Getting it right"
My point wasnt that Im a racing god, But that if Pirelli who design the tyre and go through the R&D to giving specific spec for optimum use of their product.
Why wouldnt you use them ???? is it because You know better than the manufacturer or you think you do???

Chef
You can still use your warmers with their tyres, There is a formula for your very type of warmers, Reducing the time with a higher heat, My notes are at work tho so i would have to find them tomorow.

I'd always listen to your advice and take it..! And I agree with you, I'm just posting with my own ability in mind...small! I think its very important to follow what the manufactures recommendations are. But for most, like me, by the time you've removed warmers, waited 15-20 mins to get queued up, run out to the track the tyres are back to where they were when they came out the van..just as wet and just as cold..
Please don't think I'm disagreeing with you in any way, I'm always out to learn more and take on board what someone like you is offering.. technology changes each day and nothing more so than with tyres..

[Scooter916]

No Worries Arthur.

[skidlids]

I haven't used tha latest generation of wets as most of my racing done on wets was between 1998 and 2003. so the newer style wets that around now I can't really pass comment on. But I can try asking my mate Russ who won a few wet SoT races in Superclub last year to see what worked for him.

If I had known about the question proio to seeing John and Rick Hackett yesterday I could have asked them for advice on the subject

On those older wets that I used I never used warmers and ran them 2psi higher than I did my dry tyres so 33Fr/32Rr for the wets and 31Fr/30Rr for the dry race tyres.