lesterah

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