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Thread: Metzeler RR K3’s Track Pressure

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    Standard Member CJK's Avatar
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    Metzeler RR K3’s Track Pressure

    Just a little advice please, what cold track pressures should I be running for K3’s in the intermediate group on a ZX6R? I contacted Metzeler and they recommend 32 front and 38 rear which to me seems really high for track! I questioned there response and they responded by saying the K3’s are predominately road bias tyre so pressures are high! The Michelin RS are a more road bias tyre I have used in the past and they say 31.5F and 27R.

    Many Thanks

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    Forum Moderator alex's Avatar
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    Re: Metzeler RR K3’s Track Pressure

    I get where they are coming from...they could over heat with too little pressure. But I'd still run 32/32

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    Re: Metzeler RR K3’s Track Pressure

    FYI, pressure is all about the carcass construction and heat management.

    Pirelli and therefore Metzeler (same company) use a soft carcass which needs support in the form of pressure. Michelin, Dunlop usually have a harder carcass and don't need the pressure to maintain shape. You're trying to keep the shape so they turn well, whilst also getting decent squish into the tarmac, without seeing surface temps spike and rip the rubber off the carcass.

    I used the Power RS at Snetterton at 28psi and still couldn't get the heat into the carcass to prevent cold tear. K3's I can't recall how they did but again, in the UK the battle is with cold tear more than anything especially when you're not using warmers.

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    Metzeler


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    2 YEAR PREMIER MEMBER r25sti's Avatar
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    Re: Metzeler RR K3’s Track Pressure

    if your still unsure ask the tyre support guy on the day, he should be best placed for the track and weather conditions.

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    Standard Member CJK's Avatar
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    Re: Metzeler RR K3’s Track Pressure

    I looked at the Metzeler literature and they are for DOT tyres/slicks etc so to my understanding the K3's are not on there. I really appreciate the advice and probably worth starting with recommended pressures and working down from there as I am aiming for late March if the weather is okay and the temperatures will still be down then. Another good point ask the tyre support guys who are there, Cheers.

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    1 YEAR PREMIER MEMBER Carsonr6's Avatar
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    Re: Metzeler RR K3’s Track Pressure

    I've just used the K3s on my Gen 4 at Alcarras in October and ran 26 rear 32 front off the warmers without any issues

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    Metzeler

    Stick to the pressure ranges listed within the link in Post #4 and you will be fine. Just keep an eye on tyre wear throughout the day and adjust pressures accordingly. If in doubt speak to the trackside tyre supplier during the day and they will be able to provide you with ample advice based on the track and weather conditions.

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    Re: Metzeler RR K3’s Track Pressure

    26 seems way to low...what was the pressure when you got back in from a session?

    - Alex

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    1 YEAR PREMIER MEMBER Carsonr6's Avatar
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    Re: Metzeler RR K3’s Track Pressure

    Quote Originally Posted by alex View Post
    26 seems way to low...what was the pressure when you got back in from a session?

    - Alex
    Was told or seen (can't remember which) that they were the same pressures as Supercorsa SCs which are 25-28 hot.

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