lazersharp

It's funny, if you scroll down a little you will see my comment re muffler sound on 2012 RX where on the contrary to you I describe it as very nice sound and I still love it.

Don't believe everything salesman tells you. Owners manual for 2011 RX clearly says premium fuel, however manual for 2012 RX says Regular recommended. I do what manual says, put regular gas in my new 2012 RX

To answer your first question, check tire pressure and make sure you got 32lb in them and not 38 or more. for Sure your Grand Caravan was smoother over the bumps, but my RX is very good when it comes to smooth ride. As far as your second question, I find the low pich muffler sound quite nice and sexy. Get used to it, to re-tune your muffler would cost you $, but it can be done.

Can anybody see the difference between 168HP and 172HP? Does it really mean anything?

Note that the 2010 and 2011 RX 350 were rated at 275 HP. The 2012 RX 350 is rated at 270 HP I much prefer to pay 10¢ less for each liter of gaz (in Montreal) than have an extra 5 HP

Whatever term you guys use, tuned or de-tuned makes no difference. The fact is that 2012 manual says: Recommended fuel - Regular

Sorry for the confusing term. "Owner's input" would just be doing the adjustment yourself as as been done in past model years. As mentioned before, if it could be done by the owner then the owner's manual would describe how to do it. In the U.S. the legal requirement is to have a "notification" that the seat belt is not connected. The dash light suffices so the chime can legally be turned off. Canada may have different requirements. The dealer is supposed to provide one complimentary Techstream adjustment on new car purchases to your specifications. Post #3 has the list of adjustments for 2008 but many are likely the same for the 2012 model. BTW, if it can be done by Techstream, there are adapter cables to hook up a laptop and a subscription to the Techstream software that can enable you to do it yourself. It is expensive. Another option is to advertise on Craigslist or similar that you want it done and the amount you are willing to pay. Thanks a lot for explanation and your advice. I will definitely have it done soon or later, one way or the other. The buzzer is so annoying. I wish to add that I do wear the seat belt 99.9%, but there are specific times when the belt is not needed and the buzzer drives me crazy. I did it myself in a few steps on my 2008 GS350 AVD. But as you say, I'll have to have it done on my new RX by someone who has the Techstream.

I guess I will give it a try, I have nothing to lose. BTW what do you mean by owners input?

I guess I will give it a try, I have nothing to lose. BTW what do you mean by owners input?

that would be like calling a police station and asking for instructions how to rob the bank.

I am not inquiring about not wearing the seat belt. I am just trying to find out how to turn of this annoying seat belt chime. I will still wear the seat belt, but won't be reminded with this terrible sound in case I am a few seconds late. The procedure which was working on most of previous models isn't working on 2012 RX and I assume the same on 2011RX and 2010RX as well. It worked on my 2008 GS I know there is a way to do it. It would be greatly appreciated if someone could post it here.... Thanks

I am trying to decide which winter tires to put on my new 2012 RX 350 AWD in a month or so. I live in Montral and we have to have winter tires on by Dec 15. The size is 235/60/18 and tires I am deciding between: Michelin Latitude Alpine HP or Pirelli Scorpion Snow & Ice I am sure they are both fantastic on snow and ice and that I can't go wrong with either one of them, but I need to buy either or. Any little tip would help. For instance - which will last longer, which is quieter and so on? Thanks

Me and my wife are both so excited about this new car. It is just awesome. And as a bonus it's 350 engine is tuned for regular gaz, imagine!

Any winter tire is much better in the snow then the best all season tire. I don't understand the guys who complain about all season tires not being good in the snow. I guess let's blame it on the name. I call 4 season tires a compromise. They are not very good in the summer and no good at all in the winter. For me there is no compromise when it comes to safety. That's why I drive on summer tires in the summer and on Winter tires in the winter. Keep the same size 18" and as far as the brand...they all make very good winter tires.

I must say that the muffler sound I can hear in the cabin is the nicest sound, compared to all the other cars I have owned. Is it something new for 2012 or is it the same on 2011 and 2010 ?