575 Technical Thread

Could someone with a 575M equipped from the factory with the modular 19" wheels please provide a photo of the sticker inside the driver door that shows the tire inflation pressures. Thanks!

 

Dave- I have a factory 575M HGTC. I don't have the car by me right now but I am quite sure it is 2.2 bar.

Markus

 

I agree that it is 2.2.

I have a 2005 575M HGTC w/CCM w/19" rims.
The tire pressure recommendation is 2.2 bar that equates to 32 psi/tire.

Walter

 

First thanks to Taz (and others) for very valuable and generous sharing of know how. This has helped me already re FHP upgrade on my car.

Just bought AN 52723 a Nero/Crema car, 2005 March, one owner, Ferrari stamps all the way. Thrilled with it, even without the FHP it is tight and rewarding to drive, great steering. I plan on putting FHP on except the discs which I will buy and store.

Contemplated 19 inch modular wheels but advice seems to be that with a very late car it may be too harsh with 19s.

Question : the 19s I see for sale on these boards at circa $15k - are they fake ? Always seems to be "another last set".

Advice appreciated.
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Mileage is 17k

 

Congrats on the new car!

I have a HGTC (they always come with 19 inch wheels due to the CCM brakes) and don’t think the car rides harsh. Personally I think the “standard” 575M is too soft and if I could choose I would like my car to be even stiffer. My 512 TR sits better on the road IMHO.

But you have to find out what you like most. Maybe you upgrade to FHP and then see if you think the car is about right or if it already is too harsh for you. I can’t imagine that there is such a big difference in ride quality from the 18 to the 19 inch wheels.

Markus

 

Hi Scraggy,
i follow Markus and also i tell you Congrats on the new car!

Also I have an HGTC like Markus, and my impression about the handling is the same ...
About difference between 18" and 19" tyres, i felt big difference between the 18" of my old 550 and 19" of 575, yes in middle there are different set up, but i felt more difference on asphalt grip and the tyres was the same B RE050A on both cars ....
A big jump, grip and handling, i did three month ago with the P0 corsa system 19", but this is another thing.

 

The sticker on the passenger side b-pillar on my car (which shipped with the 19" wheels) states 2.2 bar for Pirelli PZERO tyres in 19" fitment.

However, in section 1.10 of the owners manual it is stated that 2.2bar also applies to the P Zero on the default 18". Somewhat curiously, they state just 2.0bar for Michelin Pilot Sport on those wheels and there is no official guidance in the owners manual regarding the optional 19" wheels...

However, someone has taken the trouble to hand write on the Michelin line on my owners manual that the 255/35ZR19 fronts and 305/30ZR19 rears should be set to 2.3bar!

P.S. I'm running Michelin Pilot Supersports on the front and Pilot Sports on the rear (couldn't find the rear Supersports when I needed them!) and with the TPMS system operational, I try ensure that they are never below 2.2 cold - but they don't stay cold for long when you are out and about.

Fabio - I believe that you have had a little track time in yours. Do you drop the pressures a bit when they get hot??
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123761 is to be auctioned on 7th Sptember in London.

2001 Ferrari 575 Maranello 'Pre-Production' | London 2015 | RM Sotheby's

 

Hi Mogul,
Yes same for me,
sometimes at cold the TPMS bring alarm and pressure is 2.1 or 2.0, after few km pressure go up around 2.3/2.4.

First of all we need to remeber that the tyre pressures are not is a unique value for all conditions, cold weather, hot weather or slow speed and high speed, for obviously reasons ...
On my Mercedes owner manual are indicated different cold tyre pressures for diffrent use of the car .... Ferrari owner's manual are not so precise ...

Last saturday i inflate the tyres a little bit at cold to 2.4 front and 2.3 rear, because i will drive in freeway for long km.
On freeway after 20 km pressures was be 2.7 front and 2.5 back, during the day oscillated between 2.6/2.7 in front and 2.5/2.6 rear, at hot conditions.
Next saturday at cold i will check if will be ok, when i installed the new P0 corsa by my dealer he inflated at 2.3 front and 2.2 rear.

 

Hi Mogul,
i find some interesting Pirelli doc about their pressure, are of 10 years old and for Porsche but the concept, that I explained before, is the same for all cars.
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Turns out my new car has FHP on it from factory (ordered bespoke excluding brake pads) and the supplying dealer did not know, saved me a few pounds! I said all along it drove too tight and well to be standard. Bizarre.
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We all love a happy ending and you can now put the £6k saved towards a set of modular wheels!

P.S. I sent you a PM.

 

Refusal to flip (actually it does just once after a reset by technician).
Glass latches function well.
Struts brand new replaced at the beginning of Summer.
Battery new.
Roof ECU replaced.
Service people have no clue.....

 

Guys thanks for the information.

Wondering if anyone with a US-spec car and 19" wheels might be able to provide a photo of the sticker showing the tire pressures?

 

Definitely a happy ending! As I'm sure you know, UK dealer or the redoubtable Tony Willis at Maranello archive will be able to source your factory build sheet, with FHP listed, for proof come (eventual) resale. Now, you really do have the perfect 575.

 

Of course there is a difference in ride deriving from the 19" wheels' thinner tire section. The Owner's Manual even refers to the ride difference. My 575M has FHP and 19" wheels and given a choice I would not do without both, the handling is that much improved. I do not believe you will find a 'harsh' ride on normal smooth pavements though you doubtless would notice a difference when a road is rough. I deal with that by getting off 'sport' which softens the suspension response.

 

Do you think most new sets of modulars here are copies, lots of people seem to have "one last set" frequently.

 

I have the factory build sheet noting FHP excluding (special request) brakes fitted

 

I had a normal 575M before my HGTC. On this car I had 19 inch rims for my summer tires and 18 inch wheels for the winter tires. I cannot remember a (significant) difference between the two sizes regarding ride quality. But maybee it's just me.

In Switzerland the streets are in a very good condition in general. So I drive with Sport ON during 99% of all the time.

Markus

 

Markus, my guess is that on smooth public roads there may be no real noticeable difference precisely because the suspension is not working that hard. Like you I'm in Sport virtually full-time unless I'm driving on really bad road surfaces when I'd rather not have a stiff suspension.

 

Agreed, Seth.

I just came home from washing the Porsche Boxster of my wife and would say regarding stiffness of the suspension: 512 TR > Boxster > 575M HGTC > 575M

The 512 TR has 18 inch wheels while all other cars have 19 inch wheels. But it’s mainly the suspension that you are feeling. And as you wrote: The difference on smooth roads is less than on bumpy roads.

Markus

 

I've done 180,000kms in my 986 Boxster 2.7L on 17" wheels (alternating between winter and summer rubber). I specified that car brand new with the European/RoW default (non-sports) suspension and have found it to be an astonishingly comfortable ride (I once did 1,200kms in 24hrs including 4 laps of the Nurburgring!).

Any shortcomings for me in terms of stiffness were only ever really apparent when out on the track (e.g. circa 1%+/- of the time). The optional 986 M030 sports chassis set up (that I declined) would have moved the compromise in favour of stiffness and sportiness and this is where I feel I am with the FHP & 19s on my 575M.

Markus, if we get a chance to meet, you would be welcome to try my car. The HGTC/FHP springs and roll bar are reported to be not too dissimilar but the factory clearly took the opportunity to recalibrate the HGTC setup - presumably to take advantage of the reduced unsprung mass of the HGTC's brakes.

It it would not surprise me if you found that the HGTC chassis felt more compliant/less crashy than the FHP on 19s, as that was my experience from a short test drive of an HGTC car last year.

As for you guys driving with Sport mode on all the time... Do you choose to do that for chassis reasons or F1 gear shifting reasons??

In normal street driving, I don't find much difference in ride quality in Sport. Perhaps there is a bit less pitching and its possible that it deals with traffic-calming bumps in the road that bit better, so the primary benefit of Sport for me are the improved F1 gear shifts. However, the 'downside' is that you lose the ASR system when cornering, which is of course fine when you are on the ball but it could catch people out if they do not appreciate that their safety nanny has been allowed to go on a tea break.

 

MogulBoy – Thanks for posting your experience!

Our Boxster is a late model 987. So the ride quality may be quite different from yours (I don’t know). When running in Sport mode the Boxster has a really stiff suspension which even for me is too stiff for normal driving.

I drive with Sport on in my 575M because of the faster gear shifts of the F1 system. I too can’t feel a (noticeable) difference in the suspension but may be the roads here are too smooth for that… I am well aware about the “relaxed” ASR and when it is raining and I want to overtake another car out of a tight corner I usually switch off Sport mode so that the ASR could save me just in case. But I am quite used to drive without any nannies from my 512 TR which does not even have ABS. When driving in rain or snow I prefer to have ASR on!

Would be great to meet you and to be able to compare your FHP car with my HGTC car back to back! Very curious what the differences are and how they feel.
We have a Ferrari meet this coming Sunday:
10.30 meet in Zurich
11.00 drive off
12.30 meet in Wassen some guys from Ticino to do some passes together

See post #575 in http://www.ferrarichat.com/forum/europe/335681-swiss-thread-29.html

I will post more details in the Swiss thread about our meet/tour in the coming days. Would be great to see you there!

Markus

 

When I had my 512 TR, I thought the shock absorption was not stiff or harsh. Very comfortable ride. Sure, around corners the suspension was stiff enough, but very forgiving shock absorption on poor road surfaces.