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Sorry to take so long but I had the pulling to right problem when I had Michelin Sports put on by Lexus, alignment too. Mines a 2013 Lexus GS350 F-Sport with dynamic steering ( Rear wheels turn up to 2 deg. ) anyway they tried everything, I insisted they get the OEM tires Bridgestone Potenza 050A's mine has 235-40-19 front 265-35-19 rear. they got a set, car is back like NEW no pulling at all. I sold tires in past life, couldn't believe it was the Michelins, IT WAS !

Reply to Knightshade, What you are saying about the injection isn't what Lexus tech tells me, however when the injection works isn't important to me !!! Yes the intake is the F sport, I didn't pay the price I mentioned, I purchased mine from Lexus for much less, the KNN air filter also fits in the new air box, Lexus claims 5 HP increase due to less restriction with the extra hole that pulls air from behind the headlight, clean airflow & openings that allow more air equals more power, the V-6 tested at 5.3 seconds 0-60 is plenty quick, the IS-F V8 416 HP is 4.6 seconds 0-60, I know the 5.3 is shown on some reports and 5-8 on others... The one I have has all Lexus offered in the IS-350... I have 31,600 miles so far with no problems...

I have an 2006 IS350, I didn't see any mention ( my have missed it ) of the fact that the IS350 engine has both direct injection and manifold injection, under full power it runs on both, at cruise speeds it runs only on direct injection, also at idle the fuel presure is approximately 800 PSI and at highway speeds it's 1800-2000 PSI, there is a pump in the tank that supplies fuel to a pump driven off the rear of the right bank cam shaft with steel fuel supply lines to the direction injectors... So you see it's not a modification that's possible with out a lot of changes to the total vehicle.. One other thing, Lexus has came out with an intake that is simular to the KNN intake for the IS300, they replace the air tube and lower portion of the air box.. Kind of expensive, $ 455.00 list, take abot 30 minutes to install, I have it on mine, sounds great.. George

I have had this happen twice in the last three weeks, I put my foot on the brake an press the start and the engine goes to approx 3000 rpm for just and instant and back to idle, ( I know the gages go full scale every time you start ) this is actually engine winding up, the first time it did it I had put it in gear before it came all the way to idle, it jumped like I had been hit .. Lexus has no Idea what is going on and asked me to let them know it it continues.. Thanks George

I have noticed that when I set a speed on my cruise control to hold say 65 mph, I can come to a complete stop and start off again, when I reach 25 mph I can select resume and the cruise will take me back to the speed I set before the stop, I even put the shift in park to see if it made a difference, it didn't.. I contacted a friend that has an IS 350 he purchase a month before me and his does the same.. The owners Manual on page 127 if my old memory serves right, the when the ehicle slows to below 10 mph the preset is canx.. I descovered it by accident.. Actually I like it this way... Has any one noticed this on theirs.. George

:chairshot: Hi.. I have 20300 miles on my IS350 and the very worst mile per gal is around 20 mpg and as high as 30.3 mpg on the open road at 65-70 mph, I live in the Sacamento valley and use cruise control and air-cond ... I use the top grade at ARCO...Oh yes you mentioned the approximator, it bases it's mileage on the last tank average, mine always shows approx. 2-3 mpg worse than when I figure it gallons into miles driven.. I have kept book on my mpg from the first day.. When you really think about it 306 horse power and the weight any thing over 20 mpg is good... I also have the KNN airfilter installed, the mileage didn't change much from before I changed... George

John, The brake dust is because of the type of pads the IS has, there is no cure, you also notice the IS has the best brakes of about any car you have ever driven... Expect to not get the mileage on the front brakes as other cars, if I'm not mistaken Lexus says 20,000 miles may be all you will get depending on how you drive.. I have 12,800 miles on mine and the only problem is a little noise that sounds like a diesel on cold mornings when starting off, Lexus says it normal.. Fantastic vehicle.. George

As far as I know, the car will tell you the smart key battery is low and it will remind you to replace with a new one on the LCD display on the instrutment cluster. Other way to start the car with low battery key is to get the key close to hte start switch as much as possible since the switch itself is detecting the signal too. I don't think there is a way to by-pass the smart key even with a scanner... I guess. When you have the battery go dead in the fob you open the door with the metal key that's in the fob per owners manual and that allows you to start the engine normally.. That what I was told anyway by Lexus service.. George

The brake dust on all vehicles with disk brakes is normal, due to the air flow difference the rear wheels don't show the dust, they just don't get it like the front.. The IS 350 has the same brakes as the bigger GS, Lexus says the front brakes on the IS 350 may not last 20,000 miles, they are high preformance pads... Notice how they bring the car down from any speed with out fade!!! In test drives on the track with outsde air temp over 100 deg no brake fade at all reported.. George

My IS 350, with 12,000 miles makes a rattling sound when I start off on cold mornings for approximately one - two minutes, sounds like a diesel, I'm told by my Lexus dealer that they are getting reports of this on the 350 engines in other models, I was told the company is looking into this, as of now they are calling it normal.. George

My IS350 has 12,000 miles on it and never misses a beat, idle is perfectly smooth... George

Dan, As to the question on tire pressure, set your tire pressure when the tires are cold to the specs, use the same gage each time you check the tires and do it when cold also, tires very approximately 3-5 psi when hot, that also depends the area you operate the vehicle Arizona or Oregon etc.. Note: you should have tire pressure monitoring, if so when you change tire pressure you need to initialize the setting in the computer, the directions are in the owners manual... The noise you hear when idling is the direct fuel injection, the injectors on the IS 250 are different technology than other vehicles, this is the latest and gives you excellent fuel mileage, the IS 350 has both direct and manifold injection, mine is a IS350 and I hear the same thing... Just turn up that Mark Levinson system and you will not hear a thing.. haha George

I have owned several Lexus and other vehicles, the M/L sound system in the IS is the best sound quality you can get in a car, that's for us with normal hearing... It's frequency response is well beyond the normal hearing... George

In reading the other posts they have covered all the differences I know of and I spend a lot of time at Lexus checking on stuff like that.. I have several friends that are employed by Lexus, one is a manager.. Mine is a IS305 with all but the radar cruise and pre-collision.. George

I have tinted rear doors, back glass and spoiler, however my personal opinion is that chrome wheels make the Lexus look cheap, look around, you see one with one without the without looks better... I have chrome on my 65 El Camino, they look great... If you get chrome make sure they are the best you can get other wise they get tarnished easier.. George

I have never washed my Lexus, Lexus Of Sacramento and Lexus Of Roseville here in California do courtesy washes and they detail it too, you can go every day if you like, I go about twice a week in the summer time.. If the car is a Lexus no matter if it was purchased there or not, the Lexus badge is all that's required.. George

Look straight down right behind the radiator you will see a metal housing. That contains the oil filter element. You change the element. You can access the element by going underneath the car in the middle right in front there is an access panel with 3 screws. Take that off and make sure you have the correct type of filter wrench to remove the cap. I bought an adjustable one from pepboys which looks like this: http://buy1.snapon.com/catalog/item.asp?P6...amp;dir=catalog You can get the original factory lexus one, but why pay $40+ I paid $8. Good luck. I change my oil too and like he says it's under the little door and it helps to have the type wrench that goes over the top of the filter with a 3/8 drive hole in top, the one for Toyota smallest filter fits it perfectly, I purchased a filter from Lexus for just over $3.50 plus tax, they sell normally for $7.00 somehting.. I have a in, haha any way take the filter to most any good parts house and match wrench to the filter. George

If I may ask, Where do you plan on going 160 much less 140 ?:whistles: there used to be a tme when speedometers never went above 85(early 1980's). the marked speed limit in my area is 70mph, yet we are buying cars with 306 hp. i don't know where i'll go 140,( although there are places out here in the wild west where you can), i just want the capability. Is it knowing that the car is capable of max speed and not being restricted by the mfg. ? it's probably my own psychiatrical(sp) querk. i don't like restriction on my personal possesions. The limint is for engine rpm, thus the speed, I doubt if they care how fast you go the care to warranty an engine thus they don't want you to blow it up.. haha George

If your car has the three buttons on the door you have seat memory, once you program the key fob you have to lock the car for the memory to position you seat for you.. unlocked it doesn't work.. I have to do it everytime I go to Lexus, all their employees are short and they never lock my car when they bring it out, I simply push my lock button on my fob and when I touch the door handle the sets and mirrors adjust for me.. George

Alex, I have the M/L stereo in my IS350 and after listening to the standard system in a IS 250 loaner I drove my wife and I agreed the loaner stereo sounded muffled.. The M/L has titanium speakers so they are very clear.. I think it's worth the price, and I paid the full price.. haha George

Thanks... I may have a problem !!! George

I just purchased the 2007 IS250AWD and the Nav bypass does not work as indicated in this users group. Lexus must have made changes from the 2006 to 2007 ... Yikes! Thank you, Steve Don't know of anyone that's done it yet, but I'm sure someone will. People came up with ways to bypass on the GS pretty quickly. This is great that we can enter an address while driving but how about a way to dial a phone number that is not already loaded in the address book or speed dial? I saw there were ways to do it on other models but it does not work for the IS250. This would be a great help. Thank you I have the M/L and I dial my phone by voice , push the button on the steering wheel for the phone and after the beep say dial by number, the voice responds after brief delay to reset system then push the voice sw again and say the number, she will repeat number and it's also desplayed in nav screen and you can make the call.. George

Has anyone noticed when starting off driving in cold weather the engine sounds like a diesel?? a rattle rattle sound for about a minute then goes away... I started when the temp was around 40 deg.. My IS350 has 12,000 miles on it

I have had K&N Typhoon kit on three IS300, extra 8 hp and average 3 mpg better, K&N makes a kit for the IS350 however it is not CARB ( California Air Resources Board ) legal yet... I takes a while for them to get them approved.. Note: The IS350 really doesn't need more performance, mine doesn't .. HA HA George

For those of you that are having the tire pressure warning, when the weather gets cold to where the warning is going off, initialize the system again for the cold temp, the owners manual has the procedure for doing the reset.. I believe the warning comes on at approximately 3 psi from the initial setting... Or as one said have the air replaced with nitrogen, pressure remains the same cold or hot... Costco putts it in tires they install tires. George