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Discussion Starter · #1 ·
So about 2 weeks ago we noticed a small nail in the passenger rear tire. Current tires have 6500 miles on them. As the tire wasn’t losing air we decided to leave as is and order new tires to be installed at a later date. That later date was today.

We purchased some Michelin Pilot Super Sport tires only due to the better “longevity” compared to the Pirelli tires that came with our Q.

One thing I did notice after inspecting all the tires after the nail was how much the passenger front was really worn on the outside edge.

Here are two pictures taken today before driving to the dealership; first is the passenger front and the second is the driver front:

Passenger front:


Driver front:


When we arrived we told the service tech about the front and showed him the passenger front wear. He said it looked like the car had been “tracked”. We haven’t done this. Once thing I did notice while there was it had worn down to the thread:



Getting that nail was a blessing in guise.

Bottom line: even with normal driving check those Pirelli tires!


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that is odd! I think i'd have said the same thing if I'd have seen those.. it's looks like extensive wheel spinning to me. That's terrible. I have tracked my Eagle F1's twice and they look absolutely normal @ 7k. Think those tires have serious issues if they wear like that under normal use
 

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Discussion Starter · #4 ·
Service department reached out to us and said they'd recommend an alignment to adjust the front toe. We're having it done with the new tires installed today.

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ahh! are they covering the tires as a result of being so out of alignment? The tires should be under manufacturer mileage and car warranty i'd think
 

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Discussion Starter · #6 ·
No. And to be honest, we didn't even think to press that issue. Ugh. Oh well, just gonna move on.

:frown2:

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No. And to be honest, we didn't even think to press that issue. Ugh. Oh well, just gonna move on.

:frown2:

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As with all cars I never trust factory alignment or tire pressure which is why the first week I had mine aligned. Sorry to hear!
 

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I don't know how you drive, and alignment is always suspect in stuff like this but - people generally turn left more aggressively than right, which causes the passenger front to wear more. how much more depends on your style - maybe you should enter the turns less aggressively (braking understeer and weight transfer), and rely on smoking tire steer with the rear exits more, so that your back tires wear out quicker instead?
 

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Discussion Starter · #10 ·
Alignment information:

Before (current):



After:



And as a special treat they scratched one of the wheels during the installation of the tires. Ugh...



The vehicle stayed at the dealership for them to fix (paint) the lip of the scratched wheel.

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Discussion Starter · #12 ·
wow i'm imagining Benny Hill music playing at the dealer
No doubt.

The thing for me is we specifically when to the dealership and paid up the rear (IMHO) to have the tires installed. I figured, "5hit, they have Ferrari's here, they must have the best equipment for tire installation." In other words, wouldn't scratch the wheels during installation.

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yep I felt that when the Maserati dealer scratched my hood on a recall then suggested touch up paint... yeah that'll look great... NOPE
 

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So about 2 weeks ago we noticed a small nail in the passenger rear tire. Current tires have 6500 miles on them. As the tire wasn’t losing air we decided to leave as is and order new tires to be installed at a later date. That later date was today.

We purchased some Michelin Pilot Super Sport tires only due to the better “longevity” compared to the Pirelli tires that came with our Q.

One thing I did notice after inspecting all the tires after the nail was how much the passenger front was really worn on the outside edge.

Here are two pictures taken today before driving to the dealership; first is the passenger front and the second is the driver front:

...
When we arrived we told the service tech about the front and showed him the passenger front wear. He said it looked like the car had been “tracked”. We haven’t done this. Once thing I did notice while there was it had worn down to the thread:



Getting that nail was a blessing in guise.

Bottom line: even with normal driving check those Pirelli tires!
It appears to me that the tread is cracked on the worn tire, which I am guessing is highly abnormal for these tires.

Are these tires steel belted? Once steel belts are exposed all kinds of bad things happen beyond the hazard posed to the vehicle, like Forrest fires and bicycle tire flats.
 

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I've always felt like my QV pulled to the right slightly, but I figured it must just be my imagination because it's a brand new car and all. This thread has convinced me to have the dealership check the alignment next time I'm there.
 

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Discussion Starter · #16 ·
Indeed. Seeing how it was before is a bit disappointing. Our Q though did track straight and true so we never suspected the alignment was off.

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"track straight and true"
looking at your toe that isn't surprising, the drivers side not showing more wear is.
but it probably self centered on the driver side, so the net effect was .5 in on the passenger, which you might have noticed but maybe thought it was the crown on the road.

it should be way faster now that the tires are pointed in the direction of travel instead of fighting to see which side can scrape off the most rubber.
 

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Discussion Starter · #18 ·
Ha. Wife drove it a bit today with some "spirit". All she said later was "Wow, it's like a new car. It handled great before but with the tires and alignment it's at a whole new level."

:grin2:
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Alignment information:

Before (current):



After:



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Post #13 by Call me Al in the 'Stock Alignment Specs' thread provides a screenshot of Giulia Alignment Specifications.

Those factory specs give QV camber per side as:
for front a range of –0.25º to –0.91º, with median of –0.58º; and
for rear a range of –1.17º to –1.83º, with a median of –1.50º.

From this we see that the 'before' right rear camber is within factory specifications, albeit shown as out-of-spec.

Converting the factory toe specs to millimetres using OE tyre dimensions we get total toe:
for front as a range of –1.59mm (toe-in) to 1.59mm (toe-out), with a median of 0.00mm; and
for rear a range of 3.42mm (toe-out) to 6.62mm (toe-out), with a median of 5.02mm.
Note: toe for each side is half of the above e.g. front toe range per side is –0.795 to 0.795mm

From this we see rear toe 'after' is set to the maximum specification (supplied by Call me Al), albeit the spec range seen in the 'after print out' shows a greater maximum (erroneously?).

Considering factory rear toe specifications, it appears forces applied to the rear wheels by "scrub radius" will cause toe-in. Hence on a new vehicle, when there is no wear on bushings, I'd rather see total rear toe set nearer to 3.42mm out.

Thus, it would pay to monitor the inside edge of the rear tyres for wear.
 

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I don't think that the cracking of the tire tread is the the tire carcass exposed. The steel belts are below the bottom of the tire grooves and there is nothing showing there. It does look like the tire has been exposed to temperature extremes to cause the deterioration of the rubber. Most modern tires also have different tread compounds used at different depths of tread and sometimes across the tire to optimize for wet/dry traction, etc.
 
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