Tyres for V6, suggestions?

[alicrozier]

Who has the S1 Ali?

tut

errr...you do mate!

I have an S2.

tut

Doh! Face palm!
My apologies, I have just been dicked in the senior moment race.

[tut]

It was more of a complement than an error Ali, you just don't associate tut with an S2.

tut

[tut]

Who has the S1 Ali?
tut

errr...you do mate!

I have an S2.

Doh! Face palm!
My apologies, I have just been dicked in the senior moment race.

Post of the year for me Ali. Going to print it out and frame it.
tut

[TarmacTerrorist]

Only going off what i have heard from some of the race boys this year but they were saying the V6 tends to chew through the current batch of ZZR's and Avon will be revising the compound for next years race tyre.

Remember the ZZR's are available for Lotus sizes soley due to the fact they now supply the elise trophy and UK/Europe Cup series with them.

Dave at Seriously lotus has a supply of Trofoes for half lotus prices..

[Simon82]

Thought i would revive this thread and see if anyone has any new suggestions or if the new batch of ZZR's are any better than the prievious ones which had issues with delaminating etc?
Still cant get AD08R's in V6 size/speed ratings...
Any other suggestions?

[campbell]

Not sure about Exige sizes, but the Avon ZZ5s I'm using on the Evora now are doing a fine job, including in biblical conditions!!

[DougT]

I think the issues with ZZRs have been largely due to under inflation on the road and extreme optimism.
I know I am bad for not reinflating tyres to road pressure after a track day and then running around with them at 24psi or lower for weeks before I remember to reinflate them - probably why I think they ride quite well on the road! I had a slow puncture in a rear ZZR recently due to a nail in the tyre - still managed half a session at Knockhill and some road driving, but when I took the wheel off, a large crack was evident between the tread and sidewall.
Also had the tread go from around 2mm to steel belts being visible in the space of a few laps, but the tyres had done Spazz and Oulton / Cadwell at this point, and I think I know I was pushing my luck...
I'll be getting a fresh set for Frolic and trying to look after them properly this time.

[Simon82]

I chicken'd out in the end and just got the corsa's again off mytyres for a pretty good price to be fair, I havent driven the v6 on semi slicks yet so for now at least i dont know what i'm missing

[ClarkyBoy]

Thought i would revive this thread and see if anyone has any new suggestions or if the new batch of ZZR's are any better than the prievious ones which had issues with delaminating etc?
Still cant get AD08R's in V6 size/speed ratings...
Any other suggestions?

I just read this,

The rear ZZR's on N3 had really started to split all around the inside edge of the tyre wall, this was an advisory on its MOT and it looked like de-lamination, under load you really felt the side walls folding as if they were breaking down, making the car pretty unstable, I changed them out for a set of A048's and the car is nice, sharp and predictable as it should be.

I meant to put up a post asking if anyone else had this problem!

[Simon82]

hmmmm, that doesnt sound good....this is why i've been aprehensive about ordering them up, would be a bit of a kick in the nuts if get a few laps in on frolics and the tyres start breaking down...

[C7Steve]

hmmmm, that doesnt sound good....this is why i've been aprehensive about ordering them up, would be a bit of a kick in the nuts if get a few laps in on frolics and the tyres start breaking down...

Simon,

Neil and Doug had ZZRs fitted to their V6 on last years Spazz trip and had no problem. That's why I am choosing them for the Frolic. Until the AD08r or for that matter the new Pirelli Trofeo R have been 'tested' by someone else, then I am going to go with what's been tried and tested so far.

V6 choice for Frolic seems to be ZZRs for the majority and Kinger possibly going for 888s.


Steve.

[BigD]

hmmmm, that doesnt sound good....this is why i've been aprehensive about ordering them up, would be a bit of a kick in the nuts if get a few laps in on frolics and the tyres start breaking down...

I don't think that's the case, it seems to be when they have had lots of use. Ali had last years spazz tyres on at croft and they were still spot on.

Clarky how long had they been on? Were they pretty worn? Thinking about it they had been on spazz had they not?

[neil]

I think Dougs hit the nail on the head. The sidewalls on the ZZRs are pretty stiff which you can feel on the road and recommended pressure is higher than we're used to running A048s and the like. Just picked this up on the Avon website (my bold):

Minimum cold starting pressure: 22psi (This is the pressure the tyre is set to prior to a session/ heat cycle). Running any lower than this could potentially damage the tyres sidewall construction. Avon Motorsport does not recommend specific starting pressures. This is due to the variables involved (i.e. track conditions, track and ambient temperatures, circuit layout, session length, driving characteristics).

Target hot pressure: 30psi (This is the optimum pressure for the tyre to be run at whilst at operating temperature). To obtain this target hot pressure there may be a requirement to start each tyre at different cold starting pressures; this is due to each tyre inevitably working at different levels. The cold starting pressure required to achieve the target hot pressure will depend on the variables stated above.

[Simon82]

I'm still keen to get a set as well but just a bit worried that a few people seem to have had issues recently, Doug being one of them.

Maybe they are a bit more sensitive to pressures than the pirelli's etc.

[C7Steve]

I think Dougs hit the nail on the head. The sidewalls on the ZZRs are pretty stiff which you can feel on the road and recommended pressure is higher than we're used to running A048s and the like. Just picked this up on the Avon website (my bold):

Minimum cold starting pressure: 22psi (This is the pressure the tyre is set to prior to a session/ heat cycle). Running any lower than this could potentially damage the tyres sidewall construction. Avon Motorsport does not recommend specific starting pressures. This is due to the variables involved (i.e. track conditions, track and ambient temperatures, circuit layout, session length, driving characteristics).

Target hot pressure: 30psi (This is the optimum pressure for the tyre to be run at whilst at operating temperature). To obtain this target hot pressure there may be a requirement to start each tyre at different cold starting pressures; this is due to each tyre inevitably working at different levels. The cold starting pressure required to achieve the target hot pressure will depend on the variables stated above.

So tyre pressure for the standard Corsas are 32 front and 38 rear for road use and then 30 all round 'when hot' for on the track.

ZZRs on the track are also 30 when hot, but what pressures are being set when cold and on the road???


Steve.