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Tyre Wear

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20/4/2010 17:30:17  

Posts: 18
Since: 9/11/2009
Region: Glasgow
Status: offline 		I have an 2006 QP on 18'' wheels and Pirelli P Zeros.I used to get between 12k and 15k miles on rears but last 2 sets I got 3.5k and 5k .I am told Pirelli changed the compound at Maseratis request and dont make the harder ones anymore.I tried Bridgestones (compound for a Ferrari) but they are now half worn after 3k miles, so not looking good.
Can anyone tell me their experience, and recommend tyres that will give me a reasonable mileage?. Most of my mileage is motorway or town, so I am not exactly trashing them.
Thanks
20/4/2010 18:36:44  
 

Posts: 3
Since: 27/9/2009
Status: offline 		I don't have any ideas, but a very similar experience with my last rears on an 07 QP V, needing replacing after about 3000, whereas previously they seemed to last around 10,000.

< Message edited by johna -- 20/4/2010 18:37:58 >
20/4/2010 19:38:12  

Posts: 1112
Since: 11/5/2005
Region: Thames Valley
Status: offline 		Are the wearing all the way across the tread?  If not, best get a full geo check done - if it is anything like the 4200 etc then it will need to be done by maserati or an indi as they will will have the required shims to get it setup correctly.
Also, try switching brand, Falken FK452 have a very good write up by owners on here as do Vredestein.
HTH

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Rich
Mercedes-Benz C55 AMG Estate
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21/4/2010 8:42:15  
 

Posts: 37
Since: 1/2/2010
Status: offline 		It could be due to bad alignment, or bad pressure, try having your mechanic check that it is within spec. I go through rear Pirellis very quickly as they are quite soft compound.
21/4/2010 9:55:51  

Posts: 29
Since: 30/10/2009
Region: Leeds
Status: offline 		Thanks chad5k1 for good advice, I am on a trip to south France and realised the recently fitted rear tyres already will need a replacement, the wear is uneven, more on the outside. I also noted that on a warmer motorway here heated by sun the tyres wear quicker and become sticky. I did only 3000 miles since i had them fitted and the thread is now below 3mm.
22/4/2010 8:21:03  
 

Posts: 37
Since: 1/2/2010
Status: offline 		If your wear is more on the outside it really may be alignment, as the rears normally wear on the inside.
23/4/2010 12:37:25  

Posts: 18
Since: 9/11/2009
Region: Glasgow
Status: offline 		I am about to get the alignment checked but wear is pretty even .It sounds like we are all suffering here from excessive wear.One set i fitted were completely bald with one trip to the South of France.
I am going to feed this back to Maserati as I think they need to go back to the harder compound with Pirelli.
Meantime I think I will try other manufacturers.What are you guys using?

cheers,
24/4/2010 4:51:51  
 

Posts: 206
Since: 8/3/2009
Status: offline 		My everyday car is a saab-as my nickname shows-, where i drive hundreds of kms per day.I have made 7 tyre changes since 2003, all were pzero rosso, what i recognize is that the last two years they get worn a little bit earlier than before, this means approx at 25000kms the performance starts to getting reduced.
On the 4200 i also have Rossos, after 15000kms the rears need replacing.
Hope this helps,
NIkos
29/4/2010 12:12:10  
 

Posts: 4
Since: 24/4/2010
Status: offline 		Hi, same problem with the Pirelli's on my car.

I have just had a set of 4 Continental Sport 3's - Nitrogen filled (which apparently is better).  - So I will let you know how I get on.

29/4/2010 14:19:27  
 

Posts: 206
Since: 8/3/2009
Status: offline 		What tyre pressure do you set up?
30/4/2010 16:40:02  

Posts: 18
Since: 9/11/2009
Region: Glasgow
Status: offline 		Be interested to hear how Continentals go.
What is 'normal' mileage on QP rears? As I say, I was getting 12-15k. I also use Nitrogen ,which keeps same pressure regardless of temperature ,I am told.
I use pressures as per manual  depending on load. Dealer tells me geometry seems okay and wear is even throughout,so I am convinced its the Pirellis and Bridgestones compound thats the problem. Front Pirellis are of old compound and still going strong with hardly any wear.
1/5/2010 9:08:52  
 

Posts: 37
Since: 1/2/2010
Status: offline 		Nitrogen is much better for grip and tire wear, the molecule is much larger than the standard mix in the air, thus natural leakage is greatly reduced, I never have to add pressure to my tires once filled with nitrogen. Also, nitrogen is much less responsive to heat, thus keeps constant pressure and doesnt expand due to heat, thus better contact and more natural wear. Make sure your dealer is using the correct equipment to fill the gas, it should vacuum and purge the tires a few times to make sure the air in the tire is as pure nitrogen as possible. Monitor your tire pressure with TPMS while you drive and you will see more constant PSI. Further more, the car handles much better and more predictably.
1/5/2010 10:08:22  

Posts: 485
Since: 5/4/2009
Status: offline
quote:

ORIGINAL: xxxpres

Nitrogen is much better for grip and tire wear, the molecule is much larger than the standard mix in the air, thus natural leakage is greatly reduced, I never have to add pressure to my tires once filled with nitrogen. Also, nitrogen is much less responsive to heat, thus keeps constant pressure and doesnt expand due to heat, thus better contact and more natural wear. Make sure your dealer is using the correct equipment to fill the gas, it should vacuum and purge the tires a few times to make sure the air in the tire is as pure nitrogen as possible. Monitor your tire pressure with TPMS while you drive and you will see more constant PSI. Further more, the car handles much better and more predictably.


I use a carefully balanced mix of about 78% nitrogen and 21% oxygen plus some selected trace gases such as argon. Works very well, is free, and you can even breathe the stuff.......


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3200GT Assetto Corsa
1/5/2010 17:25:27  

Posts: 249
Since: 3/5/2009
Region: Cianciana
Status: offline 		As well as different Load factors (98, 99, 101 etc...), Tyres come with with different Treadwear, which is marked on the sidewall.

These are both Pirelli P Zero Rossos...

This one has a treadwear rating of 160,




This one has a treadwear rating of 220:




The higher the number, the longer it lasts...

Regards,

Enzo. 







Attachment (3)

< Message edited by ENZ525 -- 1/5/2010 17:28:36 >

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Love your Life...
6/5/2010 21:24:33  
 

Posts: 206
Since: 8/3/2009
Status: offline 		I think that they will last longer, when tradewear is high (if you optical see the tyre wear) but in real life they start to have low grip.
Nikos
21/5/2010 17:10:16  
 

Posts: 152
Since: 20/5/2010
Status: offline
quote:

ORIGINAL: xxxpres

Nitrogen is much better for grip and tire wear, the molecule is much larger than the standard mix in the air, thus natural leakage is greatly reduced, I never have to add pressure to my tires once filled with nitrogen. Also, nitrogen is much less responsive to heat, thus keeps constant pressure and doesnt expand due to heat, thus better contact and more natural wear. Make sure your dealer is using the correct equipment to fill the gas, it should vacuum and purge the tires a few times to make sure the air in the tire is as pure nitrogen as possible. Monitor your tire pressure with TPMS while you drive and you will see more constant PSI. Further more, the car handles much better and more predictably.


I had some new tryes put on the other day on the wifes car and paid £1 extra at kwik fit for Nitrogen. I know its been used in F1 for ages as it gives a stready pressure but i think they claimed a 5% improvement in wear rates and modest improvement in fuel economy. Now the gain is only small but might help the original poster a little bit.
22/5/2010 8:00:52  
 

Posts: 37
Since: 1/2/2010
Status: offline 		The tire wear improvement is mainly as a result of more even pressure as it expands and contracts less than atmospheric air. It makes the tire stay with its intended contact patch on the road more of the time. I think its a great idea, you should feel a difference, especially when road conditions are hot, or when you are driving hard.
18/6/2010 9:56:50  

Posts: 79
Since: 11/10/2009
Region: London, United Kingdom
Status: offline 		Was talking with HR Owen's chief F-M technician on Wednesday about the QP's tyres and tracking. As mentioned above the killer issue is alignment and tracking. In terms of pressure, he said the optimal setup for QP's was 32 on the front and 30 on the rears. This goes against 'conventional wisdom' of putting more pressure on the rears. However this was apparently the optimal for trading off driving characteristics with tyre wear. He felt that on average, we should be getting around 15K from our PZeros if everything was set up correctly as above. This also includes balancing of fronts and rears.
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