11 replies to this topic

[Zoobeef]

I've been using ZZRs at about 29f 30r hot pressures. Got a shiny new set of R888Rs for the first race although the first time I'll use them is qualifying. What pressure shall I aim for for those? I start at about 24psi on the ZZRs to get them to about that temp.

[fiveoclock]

Depending on what circuit 21/25 cold, dont let the rears go even a fraction above 30. Start off slightly lower at Rockingham certainly. You want to aim for around 25/29 hot. Are you going to shave them?

Edited by fiveoclock, 07 March 2017 - 10:46 PM.

[WrightStuff]

Whens the race Mark ? Interested in how they feel compared to the ZZRs

[Zoobeef]

Its Donington a week on Saturday.

I wasn't planning on getting them shaved or where I could even get that done in the North :/

[Zoobeef]

It'll be interesting to see how they compare. I've only gone for them because toyo are providing them direct to me.

[ee601]

What series are you racing in? 750MC?

[Pidgeon]

30 hot was always the mantra for 888s, 24 was always a starting point on a typical English summer's day, 0.5 higher on the O/S (except Rockingham )

[chris_uk]

Really we should start working out the temps..

[Nev]

Those Toyo R888s are meant to work at 55 degrees Centigrade apparently. I rang them up to find out when I used to use them.

Edited by Nev, 08 March 2017 - 09:18 AM.

[fiveoclock]

The R is quite different to the old tyre. Different sidewall, different compound, different construction. Toyo recommend between 70 and 120. Take your pick

[fiveoclock]

This has been linked to before I'm sure. It relates to the older model and states a temperature range of 71 to 105. For the R Toyo say the top limit is increased to 120 https://www.toyo.co....r/set-up-advice

[Nev]

Holy sh*t, 105 degrees centigrade is properly hot!