Nissan 370Z Forum - View Single Post

Mr Ed · 09-08-2009, 06:34 AM

I have had the same experience too with my Z. I noticed when I was doing the speed limit everyone was going past me.

During the 1000km service, I notified them my speedo was out of wack.

They tested it and it was under stated by 5%.

Nissan will do squat unless it is + / - 10%

I have a Navman that provides speed, note that it is not 100% accurate either.

But on my FPV GT - when I am doing 60kms, Navman shows 58km, 100km, Navman shows 98km.

In my Z - when I am doing 60, it shows 55, 100, it shows 94/95.

Therefore in the Z, I do the following speeds

65km for 60 zone
75km for 70 zone
110km for 100 zone.

If you take 5% off, you are in the safe zone.

Then again, in QLD you are given a 10% tolerence. I dont know for other states though,

Its a pain in the ***, but it aint the end of the world.

Also I heard that in some other forums, there is a conspiracy for motor companies to understate the speed - you do more kms than in reality. Which means warranty period according to mileage comes quicker. But you cant prove it.

09-08-2009, 06:34 AM	#3 (permalink)
Mr Ed Base Member Join Date: Aug 2009 Location: Brisbane, Australia Posts: 162 Drives: 09 Nissan 370Z M6 Rep Power: 15	I have had the same experience too with my Z. I noticed when I was doing the speed limit everyone was going past me. During the 1000km service, I notified them my speedo was out of wack. They tested it and it was under stated by 5%. Nissan will do squat unless it is + / - 10% I have a Navman that provides speed, note that it is not 100% accurate either. But on my FPV GT - when I am doing 60kms, Navman shows 58km, 100km, Navman shows 98km. In my Z - when I am doing 60, it shows 55, 100, it shows 94/95. Therefore in the Z, I do the following speeds 65km for 60 zone 75km for 70 zone 110km for 100 zone. If you take 5% off, you are in the safe zone. Then again, in QLD you are given a 10% tolerence. I dont know for other states though, Its a pain in the ***, but it aint the end of the world. Also I heard that in some other forums, there is a conspiracy for motor companies to understate the speed - you do more kms than in reality. Which means warranty period according to mileage comes quicker. But you cant prove it.