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Toyo R888 cold pressures

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Thu Mar 15, 2012 7:18 pm PostPost subject: Toyo R888 cold pressures
LiamR
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Hi, just wondering if anyone could give me some advise as to what psi i should set them at cold, allowing increase as they get hot.


Cheers, Liam
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Thu Mar 15, 2012 7:26 pm PostPost subject:
Gord
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All depends on your car and how you drive. But I used my R888's at 25psi cold and they worked really well after 2 warm up laps.
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Thu Mar 15, 2012 7:59 pm PostPost subject:
AK
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Info from 2 cars... BUT it should depend on YOUR testing.

i.e find a hot pressure you like and then leave them at that and check pressures when cold.

I.e start at 30psi cold do a few laps, come in and bleed to 30psi, repeat etc.

Impreza - about 25psi cold giving 30ish when hot.
GTR - about 24psi cold, 23 front, 30 hot (extra weight must use the tyres more = greater heat generated)
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Thu Mar 15, 2012 8:00 pm PostPost subject:
LiamR
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It's a clio 172 cup and it's my second track day. About 27-28 psi you think would be ok?
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Thu Mar 15, 2012 8:18 pm PostPost subject:
AK
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no experience of that car but I'd say they would be too firm after a few laps.

The only way is to really go out and find out for yourself. Start at 28psi and experiment 'when hot'
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Mini Race Car x3 - SMRC, SMRC, SLS
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X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
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Thu Mar 15, 2012 8:28 pm PostPost subject:
Willie
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I run my tyres at 2 PSI above the road running pressure when hot.
All I do is start with road pressure, do a few laps, come in and bleed pressure and repeat till it settles.

always good to take time out and check things over
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Thu Mar 15, 2012 8:45 pm PostPost subject:
Cupman
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Have a look at this. Should tell you all you need to know.

http://www.cliosport.net/forum/showthread.php?537705-R888-Set-up-Info
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Thu Mar 15, 2012 10:01 pm PostPost subject:
OFFROADNICK
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I ran my dunlops on my 172cup at 25psi cold
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Thu Mar 15, 2012 10:36 pm PostPost subject:
fiesta1700
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iv got a set of toyo r888s not used them yet, but i use Yoko A048s the now on my fiesta,
i run them at 17psi cold and
hot about 20/21psi on front (thats what they heat up to)
rear 19/19.5psi and that seams to work for me, iv tried them harder but didnt like them
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Thu Mar 15, 2012 10:54 pm PostPost subject:
AK
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that seems pretty low but I suppose it is a light(er) car
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Mini Race Car x3 - SMRC, SMRC, SLS
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X5 40d M Sport
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Thu Mar 15, 2012 10:58 pm PostPost subject:
fiesta1700
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yeh its only 800kg, and they dont seam to run on the side walls or that, was told to do this by a lad who rallys a pug 206 and only uses these tyres, and they seam to last for ages i think, i bought a set of 2nd hand yokos and iv done over 400 miles on track with them and the front passenger is only just worn now but it will still run on the rear driver side, not sure if thats them lasting a long time or not.
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Thu Mar 15, 2012 11:57 pm PostPost subject:
LiamR
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Thanks for all the advice, i'll take it onboard and try out some of the methods.
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Fri Mar 16, 2012 10:08 am PostPost subject:
Cupman
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OFFROADNICK wrote:
I ran my dunlops on my 172cup at 25psi cold


That's the same as I run my A048's.
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Tue Mar 20, 2012 12:29 pm PostPost subject:
Fro
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I remembered seeing this thread and just Came across these recomendations/guidlines for the 888's on demontweeks whilst looking at tyres, tried to keep it like some kind of table, hopefully helpful for someone Very Happy


Vehicle Weight_________________Cold Pressure______Hot Pressure
Very Light - Under 800kg_________17-22 psi___________22-29 psi
Light 800-1000kg _______________20-26 psi___________24-32psi
Heavy 1000-1400kg_____________23-27 psi___________28-40 psi
Very Heavy over 1400kg_________27-35 psi___________37-40 psi
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Tue Mar 20, 2012 12:52 pm PostPost subject:
AK
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yup, that fits in whith both our cars Smile

I run mine slightly lower than Fees but seem to generate more heat too Laughing
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Impreza Race Car, 1200kg, 480bhp - SLS/SMRC
Mini Race Car x3 - SMRC, SMRC, SLS
911 - 1981 Air Cooled 3.0
500 - 1969 Fiat 500 L
X5 40d M Sport
Mini Cooper Park Lane
MB Sprinter Camper
Track Scotland
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