Tyre Pressures

[kenprotheroe]

CSR 260, CR500's, road tyre pressures, cold.

Caterham Sales verbally noted -

23 psi front, 24 psi rear. As so, I find the car

handling to be disturbing, it literally bounces all

over a road and the difficulty increases so w.r.t.

speed - gain .

A local Csterham gathering (non of them CSR's) stated

as low as 16 psi.

Any confirmation / & tried recommendation, welcomed.

[Noger]

That sounds like delivery pressure ?

18 cold is a good starting point.

[john7]

Yip agree, work between 16 & 18 and find what suits.

[snapper seven]

Ditto above really - I run 16psi on my 15" wheels and 18psi on my 13's. That's because I run Yoko A539 tyres on the 15's which are normal road car tyres and Yoko A048R's (soon to be R888 when I can get my hands on some) on the 13's which generate heat much easier as they are a softer compound.

Fo your ideal set up do a search here
http://www.blatchat.com/searchsp.asp

You'll find plenty of advice.

Cheers

SS

[Murph7355]

What size wheels and tyres?

18's usually a good start point on 13s with up to 205s on as mentioned.

On track, I've been much lower to get the proper wear pattern and best grip...

[Terrance]

Ken, I may be incorrect but I seem to remember having a conversation re CSR pressures a while back. It seems that the correct settings for the CSR260 are f.24 R.23 COLD. This does seem at odds with the rest of us running CR500's (with de-dion chassis) but these pressures were recommended by the company who helped develop the CSR chassis not CC themselves. Running them at 18psi on your car would not be a good idea.

[kenprotheroe]

Thank you for the man'f background Dom, but, as such(24F/23B), I found the car literally bounced over the road and that was apparently moreso at speed.

Hence, I queried a local gathering (none, with CSR's),
to be informed of variations as low as 16psi., That
information was wildly disconcerting. So I tried 20F &
18 rear, without improvement.

I will now revert back to what you noted / and reappraise, and see how I fare going down to Lisbon,
1 week today. I gather Iberian temperatures will increase the tyres pressures significantly and if time
permits, enroute, I will check and adjust.