I have 2006 G35 Coupe AT
when i drive 65MPH my RPM reads around 2600 to 2700
It is a little bit high compare to my other family cars such as Mercedes and Honda.. i asked the dealer to check it and they said everything is normal.. but for some reason i feel like double check with you guys... so wutz your RPM when you are driving at 65MPH?
Thankyou

 

I think there was a thread just like this one. That sounds about right. A little under 3K. Do a search maybe you will find more info on that

 

Yea, it's a little under 3k rpm. It's because those cars you listed probably have lower redlines.