Ride Heights - Page 4

**shimmy** · 01-03-2011, 12:29 AM

Quote:

Originally Posted by titan

heh, shall I just give up ?

OK its a reasonably fair point but having played with tyre pressures in the past (albeit different cars) I can't say I've noticed a huge amount of difference.

In fairness I do check pressures in the summer as bone dry trackdays tend to heat things up nicely.

What pressures (hot) would you recommend ?

On the CSl tyre pressures will make a massive difference, more than suspension and nearly as much as geo.

If you aim for 32 HOT you won go far wrong at first then adjust down as you feel the ride altering. Like Alex says, starting around 28 cold then you will
Need to let out 2-3 more psi to get them 32 hot immediately after a good session

I am sure with assume pyro advice you could fine tune the pressures down to optimum for each corner of the car on each track.

uncle benz · 01-03-2011, 07:38 PM

I start at 26 psi cold, with Toyo R888's

Usually end up 30ish hot.

**shimmy** · 01-03-2011, 08:41 PM

Quote:

Originally Posted by uncle benz

I start at 26 psi cold, with Toyo R888's

Usually end up 30ish hot.

So do I but just need to be a bit careful on running low pressures too agressively on 19 inch tyres

uncle benz · 01-03-2011, 09:03 PM

I can't afford 19's.

**shimmy** · 01-03-2011, 09:55 PM

Quote:

Originally Posted by uncle benz

I can't afford 19's.

I'd have though Titan was keeping you in sheepskin slippers

uncle benz · 01-03-2011, 10:09 PM

I have a nasty AMG habit that's keeping me poor.

I'd like to talk about it, but I've started crying already...

titan · 02-03-2011, 10:02 AM

Quote:

Originally Posted by AlexGTT

Believe me, BIG difference on E46 M3/CSL. Cups are quite sensitive to pressures.

Hot I run 30ish front 32ish rear.

Odd, shouldn't you run a higher pressure on the wheels that support the engine weight. 32 front, 30 rear ?

**glendog74** · 02-03-2011, 10:17 AM

On track I run:

Fronts 31/32 hot

Rear 30/31 hot

this normally equates to a cold starting temp of around 26 during the warmer months.

mattCSLnut · 02-03-2011, 10:44 AM

Quote:

Originally Posted by uncle benz

I have a nasty AMG habit that's keeping me poor.

I'd like to talk about it, but I've started crying already...

There, there

we understand

http://www.youtube.com/watch?v=5Nq4x...eature=related

**shimmy** · 02-03-2011, 12:47 PM

Quote:

Originally Posted by titan

Odd, shouldn't you run a higher pressure on the wheels that support the engine weight. 32 front, 30 rear ?

No not necessarily. Don't forget the CsL has near perfect weight distribution.

You run pressures that give you the best grip levels and balance for your car.

Pyro tests at Snett for me last year showed that hot pressures should be around 26RL, 29RR, 31FL, 33FR although my camber wasn't perfect so these may have altered slightly when adjusted.

02-03-2011, 10:17 AM	#38
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	On track I run: Fronts 31/32 hot Rear 30/31 hot this normally equates to a cold starting temp of around 26 during the warmer months. __________________ Cha'mone Mother F**ker!

01-03-2011, 07:38 PM	#32
uncle benz S4 - Getting the hang of it Join Date: Nov 2009 Location: West Sussex Posts: 155 Casino cash: $5680	I start at 26 psi cold, with Toyo R888's Usually end up 30ish hot.

01-03-2011, 09:03 PM	#34
uncle benz S4 - Getting the hang of it Join Date: Nov 2009 Location: West Sussex Posts: 155 Casino cash: $5680	I can't afford 19's.

01-03-2011, 10:09 PM	#36
uncle benz S4 - Getting the hang of it Join Date: Nov 2009 Location: West Sussex Posts: 155 Casino cash: $5680	I have a nasty AMG habit that's keeping me poor. I'd like to talk about it, but I've started crying already...