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Its remarkable that you have a fairly steady hand with your camera while doing this speed. Plus the car shake doesn't seem to be much. Two & too awesome.

Open flat road with swamp on both sides so no deer, no cars, no side roads, no driveways. There's a time and a place, you just have to be smart and safe about it.
 

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Its remarkable that you have a fairly steady hand with your camera while doing this speed. Plus the car shake doesn't seem to be much. Two & too awesome.
The car is very stable at those speeds, I once wanted to see how good the brakes were, I braked as hard as I could from 150 down to about 20mph as fast as I could and the car was simply amazing NO brake fade whats so ever and little to no chassis disruption. Just to note I have the Michelin pilot sport a/s 3+ tires on my car and they help a lot at high speeds.
 

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2018 Q4 with Fiamenghi Ti exhaust, Race Mod, and Tecnico wheels.
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You guys do know that the tire manufacturer as well as the owners manual say that you need to substantially increase tire pressure before making a high speed run? IIRC you need about 40-42PSI cold in the 225 40R19 tires for speeds over 125MPH. Otherwise you risk a blow out from a sidewall failure, and a blow out would be disastrous at such speeds.

In spite of the safety rating of Giulia, the safety systems are not really designed to cope with such high speeds. Airbags are not fast enough to do anything useful, for example. I do not know if the safety belt retractors are fast enough, but I doubt it.

A long while back a forum member posted a QV run on the Autobahn. He managed to run it up to a bit over 290KPH (about 181MPH) before traffic forced a slow down.
 

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2017 Giulia Ti Sport Q4, Vesuvio Grey, Red Calipers, Red Leather interior, Every Option !!
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You guys do know that the tire manufacturer as well as the owners manual say that you need to substantially increase tire pressure before making a high speed run? IIRC you need about 40-42PSI cold in the 225 40R19 tires for speeds over 125MPH. Otherwise you risk a blow out from a sidewall failure, and a blow out would be disastrous at such speeds.

In spite of the safety rating of Giulia, the safety systems are not really designed to cope with such high speeds. Airbags are not fast enough to do anything useful, for example. I do not know if the safety belt retractors are fast enough, but I doubt it.

A long while back a forum member posted a QV run on the Autobahn. He managed to run it up to a bit over 290KPH (about 181MPH) before traffic forced a slow down.
Actually I do know exactly what you’re talking about — the manufacturer says 35lbs front and 37lbs rear.... before I made this “run” I put the tires at 40lbs front and 42lbs rear because I knew the max mph was 149mph rating on these exact tires and know how temperature effects the numbers. After all this being said... I also know it may not have been the smartest and/or safest “run” to make but I wanted to see what my Giulia Ti Sport could do!? The picture says what me and my Giulia Ti Sport did in fact DO in a real-world situation!!!... and if I get the “improved” ECU I’m looking to purchase and it improves my top speed, I’ll post that too?????
All my post was supposed to “say” was that it’s fast and smooth and luxurious and just all around awesome and it’s an automobile that should be bought by more people!!??‍♂?????? Much respect!!
 

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I'm still amazed in all ways as said above. Glad you are alive too.
 

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Speaking of tire pressure, on my recent 3,000 mile run, I adjusted pressure every morning to the rated 32/36 on cold tires. It was consistently at 35/39 after a few minutes of running, and stayed that way all day, no matter outside temperature. Consistent at any elevation and any weather and any state and any pavement texture. The scientist in my head is amazed as it would calculate otherwise.
 

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I love the HATE my friend! We all expect nothing more (less) from the “internet”. I have a proof and still get no love. Keep the HATE alive brotha??!!
Lions don’t hate sheep my friend.

Hate would be wishing you a tire blew when you hit 150, ejected from the car landing in a swamp but the Alfa safely came to a stop without a scratch and they couldn’t find your body until the next ice age. It is widely known the Giulia speedometer reads higher than actual speed. Look up the many topics on it. So yes you hit 150mph on a speedo but it’s off by at least 2-3 mph.
 

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So all cars tend to have speedometers read slightly off that also changes with age of tire, so is the 2-3 mph difference on a brand new factory tire set or later in life?
 

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So all cars tend to have speedometers read slightly off that also changes with age of tire, so is the 2-3 mph difference on a brand new factory tire set or later in life?
I don’t think it significantly changes with the tire age. I know some have swapped tires and it’s improved. Some have swapped tires and it’s increased inaccuracies. So in the end the speedo is just off by 1-2mph or 2-3mph in some cases. Not uncommon in cars really but 3 mph would be considered pretty extreme now a days. In the 90s that was normal. Best way to get accurate time or speed would be aftermarket device like dragy or vbox. Although an easy free way to figure it out is using waze. Waze will report exactly what I just said. 1-2mph or 2-3mph off depending on certain factors.
 

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Cool.

I stopped using Waze when Google bought them. I recently did the mile measurement thing while driving the Great Salt Lake Desert where they have the speed and distance markers to measure against. But it was 11:45pm in the night and I was mentally inaccurate to not get an accurate enough read. But it was an interesting theoretical exercise nevertheless. On my past BMW cars, since I was driving RWD convertibles, (for that matter, also on my Miatas) I always switched winter/summer tires and always noticed noticeable changes in speedometer accuracy, so this all makes sense.

I don’t think it significantly changes with the tire age. I know some have swapped tires and it’s improved. Some have swapped tires and it’s increased inaccuracies. So in the end the speedo is just off by 1-2mph or 2-3mph in some cases. Not uncommon in cars really but 3 mph would be considered pretty extreme now a days. In the 90s that was normal. Best way to get accurate time or speed would be aftermarket device like dragy or vbox. Although an easy free way to figure it out is using waze. Waze will report exactly what I just said. 1-2mph or 2-3mph off depending on certain factors.
 

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‘19 Giulia Ti Sport Q4
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Cool.

I stopped using Waze when Google bought them. I recently did the mile measurement thing while driving the Great Salt Lake Desert where they have the speed and distance markers to measure against. But it was 11:45pm in the night and I was mentally inaccurate to not get an accurate enough read. But it was an interesting theoretical exercise nevertheless. On my past BMW cars, since I was driving RWD convertibles, (for that matter, also on my Miatas) I always switched winter/summer tires and always noticed noticeable changes in speedometer accuracy, so this all makes sense.
Why did you stop using Waze because of Google? Personal data concerns?

Waze is a fantastic tool for my needs; I would not like to be without it.
 

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I know all companies are mining me.

This is my personal opinion that I won't even push on my spouse and daughters. They are not just individuals with their own rights and thoughts, they are also all women. Their bodies, their minds, their tools, their rights (??, just got political there too).
Why did you stop using Waze because of Google? Personal data concerns?
Waze is a great tool. Google is a good company and doing a great job in many ways, but I'd like to opt out of their ecosystem as much as I humanly can. I just avoid Google tools as much as I possibly can anywhere I can. To those who want to attack me on the forum, here's some more fodder ;): I also request my friends to turn off their Amazon & Google toys if they invite me. Most oblige. Those that don't, I make a decision on whether to participate or not based on whether I know them for 5 years or 35.
Waze is a fantastic tool for my needs; I would not like to be without it.
 

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2018 Q4 with Fiamenghi Ti exhaust, Race Mod, and Tecnico wheels.
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Regarding the speedometer accuracy, at high speeds it is different and more complicated than at the speed limit. The forces on the tire at high speed make the tire diameter increase making the speedometer read lower than reality but other forces also make the tire slip on the pavement making the speedometer read higher than reality. I expect that at 150MPH on good pavement the tire expansion effect is dominant and may be enough to overcome the 2-3% bias that is built into the speedometer for legal reasons. OTOH, "the internet" indicates that the expansion effect is trivial. I dunno if I believe it; the expansion effect is clearly extreme for (much more flexible than your Giulia tires) dragster tires.

Here is some info from tire rack on inflation pressures and vehicle loading for driving at high speeds, with an example for one particular tire provided:

 

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I know all companies are mining me.

This is my personal opinion that I won't even push on my spouse and daughters. They are not just individuals with their own rights and thoughts, they are also all women. Their bodies, their minds, their tools, their rights (??, just got political there too).


Waze is. Google is a good company and doing a great job in many ways, but I'd like to opt out of their ecosystem as much as I humanly can. I just avoid Google tools as much as I possibly can anywhere I can. To those who want to attack me on the forum, here's some more fodder ;). I also request my friends to turn off their Amazon & Google toys if they invite me. Most oblige. Those that don't, I make a decision on whether to participate or not based on whether I know them for 5 years or 35.
Thanks for the reply. I was just wondering if you avoided Waze for the data issues or whether you had a complaint with how it performed.
 
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