14IS350AWDF-Sport

Nice, I really liked the the 8 speed on that model. AWD was a sure way to go living out in Seattle and polar vortexes back east. It definitely broke a 100 with ease and had plenty more to floor it. Apparently there are different rpm settings and you can disable the speedometer range and glowing effect. Definitely will have to do this again on a longer straight a way. I believe 'em when they say 144mph. What mods by the way?

Don't think its a Lexus issue. Maybe pavement bad roads?

I'm curious about the top speed of the IS models. I've read 144mph on a few sites and 111mph on a couple for the is350's.. A Honda Civic pulled beside me today and revved his engine. I entertained him. I haven't really put the engine to the test--I just got it for my B-day in February--not even 1200 miles on it. I reached 60 in about 5.5 sec. and he was barely visible in my rear view mirror by 105 mph. But I did see my tachometer begining to glow red. (I coasted and slowed down... Amazing brakes by the way and those gears do hold on corners!) Anyway... I peeped inside the user manual and I read the tachometer has a range of 30mph-100mph... She still drives purrrrfect, won't be doing that again because I don't want to damage her in anyway... But does anyone have an answer or approximation? Check out my ride in the attachments.