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New M35/M45 Owners - Give Us Your Report!

103 messages,  Last post on Jun 18, 2008 at 12:28 PM

You are in the Infiniti M35/M45 Forum. Your Hosts are pat & karens

What is this discussion about? Infiniti M35, Infiniti M45, Sedan


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#54 of 103
Re: Test Drove a M35x [buddybrad] by cdnpinhead
Feb 25, 2007 (5:02 pm)
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Replying to: buddybrad (Feb 25, 2007 3:48 pm)

I also thought the M's ride was bumpy and that's coming from someone who has driven a 540i Sport for 4 years. I wondered if the tires were over inflated?
 
Exactly.
 
This is a common issue, since many new cars appear to be shipped with tires at the absolute maximum pressure, to help prevent flat-spotting. Having read a number of similar posts over the past seven years, I'd recommend carrying a tire pressure gauge & making appropriate adjustments for the test drive, especially for in cars of this calibre. The salesperson may appreciate that you're a serious car person (but not likely).
 
You've a pleasant decision to make. I hope you'll enjoy the process.
#55 of 103
Re: new M35x shakes when breaking [james27] by tayl0rd
Feb 26, 2007 (12:07 pm)
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Replying to: james27 (Feb 23, 2007 1:31 pm)

They probably weren't warped. I bet they were glazed over. Glazed brakes exhibit the same symptoms as warped rotors with one important exception. Warped rotors will also generate a pulse in the brake pedal, whereas glazed brakes/rotors will not. Clarence10, did you have a pulsing brake pedal?
#56 of 103
Re: new M35x shakes when breaking [tayl0rd] by clarence10
Feb 26, 2007 (4:50 pm)
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Replying to: tayl0rd (Feb 26, 2007 12:07 pm)

unfortunately, I do not remember, as I had only had the car for a week.
#57 of 103
Re: Test Drove a M35x [cdnpinhead] by clarence10
Feb 26, 2007 (4:51 pm)
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Replying to: cdnpinhead (Feb 25, 2007 5:02 pm)

Excuse my ignorance, but what is Flat-Spotting?
 
My tires on my new M35X show as 34PSI for all tires. Is that the high end of what is acceptable? I find the ride bumpy and loud as well.
#58 of 103
Re: Test Drove a M35x [clarence10] by james27
Feb 26, 2007 (6:58 pm)
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Replying to: clarence10 (Feb 26, 2007 4:51 pm)

In order for tires to be able to support a vehicle, they have to first have the right load rating, then they have to have (at least) the designated tire pressure. Within an acceptable range, changing the tire pressure can change the handling and ride. Look on the sidewall of the tires, it will list the maximum allowable cold inflation temperature (I think it is around 40).
 
I had Dynamat installed on the doors and floor of my M35x and it made a significant difference in the noise level. Much nicer on a long trip.
#59 of 103
Re: Test Drove a M35x [buddybrad] by stickyfeet
Feb 26, 2007 (8:03 pm)
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Replying to: buddybrad (Feb 25, 2007 3:48 pm)

we experienced a similar dilemma. thought the m35x was the car we would purchase but changed our minds and ran with a 525xi instead. we recognized most of the problems others discussed on this site. we are glad we chose the bmw. maybe we will revisit the m in a few years.
#60 of 103
Re: Test Drove a M35x [clarence10] by tayl0rd
Feb 27, 2007 (7:57 am)
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Replying to: clarence10 (Feb 26, 2007 4:51 pm)

Excuse my ignorance, but what is Flat-Spotting?
 
It's exactly what it sounds like. With some brands/types of tires, if the car sits for an extended time (usually a few days or more) the tires will "settle" and have a flat spot on the tread from sitting in the same spot for so long. It's nothing serious and the tires will regain their roundness after just a couple of miles of driving.
 
It's basically like when you lay your head on your arm or a pillow for a while and when you get up you have those lines and creases in your face. That's the exact same thing as flatspotting.
#61 of 103
Re: Test Drove a M35x [clarence10] by cdnpinhead
Feb 27, 2007 (9:45 am)
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Replying to: clarence10 (Feb 26, 2007 4:51 pm)

Tayl0rd's explained it, so I won't repeat.
 
Let us know what you find out if/when you do another test drive, after checking the tire pressures.
#62 of 103
2006 M35 or M45 -- Need advice! by vanhalenabe
Mar 02, 2007 (8:03 pm)
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Hi everyone,
 
I am currently in the market for a 2006 M35/45. I only like the Wheat Interior with Rosewood Trim, which rules out the Sport Package. I am looking for the Technology Package, however.
 
So, I'm comparing a regular M35 vs. an M45. The cars look identical on the interior & exterior. The only difference I'm aware of is what's under the hood.
 
The price difference on the used market is between $5K and $8K, depending on exact options, mileage, etc.
 
Question -- Is an M45 worth the difference? That is a lot of money for just an engine upgrade. But I've also heard the Infiniti V-8 is much smoother and quieter than the V-6. EPA gas mileage is only 1-2 mpg worse. Some people have said an M35 is essentially nicer and larger G35. But the M45 has an unique engine not shared with the G, and that alone is worth the price of admission.
 
Any thoughts would be greatly appreciated. If there are other differences (good & bad) I haven't thought about, please let me know.
 
Thanks!
#63 of 103
Re: 2006 M35 or M45 -- Need advice! [vanhalenabe] by bw45sport
Mar 02, 2007 (10:53 pm)
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Replying to: vanhalenabe (Mar 02, 2007 8:03 pm)

Any thoughts (M35 v. M45) would be greatly appreciated. If there are other differences (good & bad) I haven't thought about, please let me know.
 
I own the 45 sport and have only test driven the 35. The primary difference that I notice is that the 35 has the same exhaust chip set as the G35. This creates a fairly pronounced exhaust note that some people don't care for. It really is a nice sound but at the high revs required on the highway can be a little noisy for some. It tends to be pretty constant as well so if you want extreme quiet the 45 may be the better choice.
 
As you also mentioned, depending on how the car is driven, you may get nearly the same mpg in the 45 that you would in the 35. The numbers I've gotten to date are very similar to what I've seen posted here by owners of the 35.
 
Performancewise, the 45 is quicker and can pin you in your seat but both cars are plenty quick enough for most people.
 
Function and handling seem the same so I believe it really comes down to whether you prefer a little extra punch and a quieter ride or whether you'd prefer to save some money.
 
I've often wondered how much better the M35 non-sport version would sell if they would tone down the exhaust note a little. The most common complaint, especially from those who have switched to the M35 from other luxury vehicles, is the noise.

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