Tyre pressures ?

[slikk]

Done a search, read me Bible and looked in the handbook. Why doesnt anybody want to tell me what the tyre pressures on a Chimaera should be? 225-50ZR16 rear and 205-55ZR15 front.
Help me .. .. ..someone.. .. .. anyone.. .. ..

[tamago]

I think i recall 22psi being banded about or 24psi if you are doing track days...

[slikk]

Thanks !

[FlipFlopGriff]

My Griff handbook states 22 front and 24 rear. Assume this would be the same for Chims.
FFG

[TheHobbit]

FlipFlopGriff said:

My Griff handbook states 22 front and 24 rear. Assume this would be the same for Chims. FFG

I quite sure they're the figures my manual states for my Chim....

[Slikk]

Thank you one and all

[thegman]

would you recommend increasing these stated pressures if going to le mans with a boot full of heavy crap

[bobfather]

Good god man that thread is six years old.

Your tyre pressures do need increasing if you are loading weight into the car. By how much is anyone's guess. It also depends what tyres you have on, some need higher pressures to start with because there are rigidity variations between the commonly used tyres

[dicktheleg]

Think the figures are in the handbook - at least they are in mine.

22 - 24 normally

25 - 28 loaded / high speed - so I'd go for these for Le Mans - that's what I have set mine to anyway.

[bigdods]

depends on the tyres. Those pressures are probably for SO2's , I find them a bit low for my current tyres so front dunlops have 24 , rear falkens 26.

[myph]

Hi, from my 98 450 handbook its 22 front and 24 rear and 25 front and 28 rear fully loaded.

[bobfather]

bigdods said:

depends on the tyres. Those pressures are probably for SO2's , I find them a bit low for my current tyres so front dunlops have 24 , rear falkens 26.

Spot on, don't use the settings in the book, they are for S02pp's. S02pp's were very rigid, if you use the same pressures for soft sidewall tyres you'll not have the ride characteristics that TVR intended. Most of the tyres used by Chim/Griff owners have softer sidewalls than those used when the book pressures were selected

[taylormj4]

Just had new Toyos put on my 450 and the garage put the rears at 30psi and the fronts at 32psi and 35psi !
Handling was pretty terrible as you might imagine !

Matt