| 3.5 Lover |
I went to a dealer sponsored class on new vehicles sponsored by a Nissan Dealer in Northern Virginia to get new owners familiarized with their car and how to maintain them.
I asked the question about Tire Pressure Monitoring System and using the sensors in aftermarket wheels and I was told there should be no problem as long as you use the factory sensor because they are programmed for your vehicle. It would cost about $70 for labor to reprogram a new set of sensors to respond to your vehicle, I had no issue with this response. Now here comes the funny part that I know everyone will get a laugh out of. The shop foreman said if I was to put any wheels and tires that are larger than 18", they would void the warranty because the CVT would fail with larger wheels because it can detect the circumference of the wheels as larger and cause the CVT to mess up. I was so mad that I wanted to slap this idiot. This goes to show everyone that they are trained to lie to customers and if you believe half of what they say shame on you! What you don't know in this case can hurt you. I guess this GT-C Murano won't be build based on that idiots comments at the dealership. I know there are members here that have 20" and larger wheels and No issues have arisen with their transmissions over a period of time. I would like to hear their comments. My 20" FX45 Chrome wheels are going on tomorrow regardless of what that A$$ hole said.
By the way, I am new here but not new to Nissan. I am a member of the Maxima.org forum (too many Nissan's to list). I welcome your opinions! This is too funny! |
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| njjoe |
3.5 Lover-
Great story. I assume the speaker was a Service Adviser or Salesman. The truly sorry part is that the speaker probably believed what he was saying was the truth. Most of these guys aren't gearheads, and many couldn't change their oil if their lives depended on it. He probably heard it from someone else and assumed it had to be true.
Just the other day we had a member report that the dealer told him he would void his warranty if he used a non-OEM hitch. Now we learn that if you upgrade your wheels to something greater than 18" we will void the warranty. Don't these guys have any shame? What's next? Using non-Nissan wiper blades will void the warranty?
I give you credit, I would not have been able to sit still and not question the guy.
-njjoe |
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| 3.5 Lover |
It was tough not smacking him for his stupidity but I just looked at him with a look that he knew I didnt believe the crap he was saying. He also said you cannot break in your car with synthetic oil. I dont know how true that is on the Murano and I do find it hard to believe. I heard the 350Z comes from the factory with synethetic oil and at some point it is broken in. I had two Saabs (In Germany) and they come from the factory with synthetic break in oil and replace your breakin oil with synthetic in Germany. I believe the Corvette has synthetic oil as well as many high performance vehicles.
Bottom line, if I am having an issue with my vehicle and I have a aftermarket part on it I will ensure I replace the factory part back on to avoid the nonsense.
I will post a picture of my Murano with my Nissan "Oversized warranty voiding wheels" tomorrow :) |
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| gang |
quote:
Originally posted by 3.5 Lover
The shop foreman said if I was to put any wheels and tires that are larger than 18", they would void the warranty because the CVT would fail with larger wheels because it can detect the circumference of the wheels as larger and cause the CVT to mess up. I was so mad that I wanted to slap this idiot. This goes to show everyone that they are trained to lie to customers and if you believe half of what they say shame on you!
I think you give him too much credit. He could very well believe what he said. Think about it, using 20" wheels really doesn't cut dealer's profit. It just shows the caliber of "factory trained" mechanics. I remember another dealer told me that all new models have GPS built in regardless of navigation option because the speedometer requires it. That's why the only time I would go to a dealer is for warranty services, and fortunately, none so far. |
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| TEC |
| Maybe he meant staggered wheels would hurt the AWD system :8: |
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| njjoe |
quote:
Originally posted by TEC
Maybe he meant staggered wheels would hurt the AWD system :8:
Nah, my take is that the speaker ventured into territory where he should not have been.
But you bring up a good point. Modders should be cautioned on using the OEM spare if they have larger diameter tires mounted. The spare will fool the system into believing the good axle (non-spare) is slipping and will activate the AWD system. As we all know, you don't want to do this on dry pavement.
-njjoe |
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| Halo |
What he says is, to an extent, possible.
If you mounted 20" wheels on there with tires of the stock aspect ratio, your overall diameter would be considerably larger than stock and that would screw with your final drive ratio. This in turn might play games with the CVT which is sensing engine RPM and speed and has a "map" to select the correct ratio depending on those variables.
However, as anyone who has ever purchased aftermarket wheels should know, if you go larger diameter wheel, you reduce the aspect ratio to achieve close to the stock overall diameter. (In actuality, you'll probably be off a mm or two but that much slop can be accounted for by differences in tire pressure.
These dealer service lectures are designed to get the customers into the dealership and pimp their service dept. They're a marketing ploy. |
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| njjoe |
quote:
Originally posted by Halo
What he says is, to an extent, possible.
If you mounted 20" wheels on there with tires of the stock aspect ratio, your overall diameter would be considerably larger than stock and that would screw with your final drive ratio. This in turn might play games with the CVT which is sensing engine RPM and speed and has a "map" to select the correct ratio depending on those variables.
Halo-
I beg to differ. The CVT does not sense actual speed. What it does is sense axle revolutions and calculates speed by assuming a certain wheel diameter. If you increase the wheel diameter the CVT senses a greater load on the engine, as if you had an additional passenger in the car, and reacts accordingly.
-njjoe |
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| Eric L. |
I agree that the clueless service advisor was referring to overall wheel diameter (including the tire), and not just the metal wheel. If you think about it, its a good piece of general advice for the average customer, who probably doesn't know the difference between "larger wheel" and "lower aspect tires" anyways.
As for ruining the CVT, like joe says, all the CVT senses is the wheel speed. It will throw your speedometer off with larger and smaller wheels. |
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| Halo |
quote:
Originally posted by njjoe
Halo-
I beg to differ. The CVT does not sense actual speed. What it does is sense axle revolutions and calculates speed by assuming a certain wheel diameter. If you increase the wheel diameter the CVT senses a greater load on the engine, as if you had an additional passenger in the car, and reacts accordingly.
-njjoe
This is exactly what I meant. It is sensing wheel RPM and calculating speed using that value in the predetermined map to select a ratio. The same way as the speedometer doesn't measure actual speed, only wheel rpm.
I wasn't implying that it had some sensor that could measure speed directly against some arbitrary frame of reference. I guess with a radar gun it could measure speed as long as the target was stationary. But, it might record 67,000 mph (speed of earth around sun) or 22,000 mph (speed of milky way relative to universe ... or Local Group ...I can't recall) depending on what you aimed it at. :cool: |
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| 3.5 Lover |
Thanks Guy's for backing me up on this one. Check my thread I just posted under problems and there is a recall on our Muranos with Intelligent Key built from Aug 2004 thru July 2006.
Let see how long my CVT lasts :) |
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| sobamanismo |
Now come on guys......he was afraid that you wanted to have a Jeckle & Hyde MO and would put PIMP A$$ dub-dueces on one side and Stock 18's on the other side (of course both having low profile tires cause that's how you roll daaawg) and THAT would certainly cause the CVT some issues
....He was just saving you from the auto-fashion police :1: |
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