996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Toyo R888 cold/hot pressures for track

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Old Jul 6, 2008 | 08:54 AM
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Toyo R888 cold/hot pressures for track

Guys that have experience with the R888...

I will be driving on them to the track (~200 miles), use standard cold pressures?

At the track what is a good starting point for cold and target pressure for hot front and rear?

Cheers,

Adam
 
Old Jul 6, 2008 | 10:15 AM
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At road standard pressures are okay.

At track hot pressures of 2.2-2.3 bar front and 2.4-2.5 bar rear should be good.
 
Old Jul 6, 2008 | 11:14 AM
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33 front - 37 rear is spot on
 
Old Jul 6, 2008 | 11:18 AM
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Starting cold 28 - 32, depends what track, tires can increase different levels at different tracks.
 
Old Jul 6, 2008 | 11:32 AM
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Thanks guys.
 
Old Jul 6, 2008 | 01:25 PM
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I found my sweet spot was 28 cold all around reaching 38 hot all around... Next time I will try a little higher in the rear then front though!
 
Old Jul 6, 2008 | 07:30 PM
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Originally Posted by iLLM3
I found my sweet spot was 28 cold all around reaching 38 hot all around... Next time I will try a little higher in the rear then front though!

+1.....
 
Old Jul 16, 2008 | 01:01 PM
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Guys,

just wanted to post my experience as a novice on these tyres compared to my last time at the track on Pirelli Assymetrico's.. Dang, these tyres are fantastic!

I went with the suggestions above on pressures, pretty much seeing 39-41 max when hot all round, adjusting accordingly, you can expect quite an increase over cold, especially on the rears..

Grip was soo much better and I never got in to enough corner exit speed or oversteer to experience them let go on me though I was pretty much flying, guess that may still come.

On the road overnight between the track and leaving the tyres on, they howl at the lower pressures. Before the drive home I got them up to about stock 36/44 and they ran fine.

I never got to experience them in the wet but I imagine that will happen sooner or later..

Great tyres guys that can be driven too the track.

Adam
 
Old Jul 16, 2008 | 01:31 PM
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I run the nittos NT01s sister tire company from track expierence they are perfect at 38 hot all around should be the same for r888s
 
Old Jul 16, 2008 | 01:34 PM
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Originally Posted by AdrianM5
I run the nittos NT01s sister tire company from track expierence they are perfect at 38 hot all around should be the same for r888s
What sizes were you able to find them in? I could never find anything that would fit my wheels...
 
Old Jul 16, 2008 | 01:42 PM
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I run 235s up front and 315s in the rear on my stock wheels!
 
Old Jul 16, 2008 | 01:47 PM
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I am curious to try a set anyone gone with wider sizes? Where is a good place to source a set?
 
Old Jul 16, 2008 | 01:54 PM
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Oak I am running 335's in the rear and 245 up front, 18's...
 
Old Jul 16, 2008 | 01:58 PM
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Nice, what kind of camber and caster are running? No rubbing at all? Are you using these with with Stock GT2 wheels/size offfsets?
 
Old Jul 16, 2008 | 02:01 PM
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Originally Posted by AdrianM5
I run 235s up front and 315s in the rear on my stock wheels!
Adrian, stock TT or GT2 wheels? No rubbing?
 


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