14IS350AWDF-Sport Posted March 24, 2014 Share Posted March 24, 2014 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. Quote Link to comment Share on other sites More sharing options...
JJFranco Posted March 25, 2014 Share Posted March 25, 2014 I can tell you that at least on the RWD F Sport is more than 111, and the Speedometer goes above 100, I got it to 120 yesterday in a flash! I am doing some testing with the car in a few weeks for some mods and I will let you know what my baseline is once I have all the numbers. Quote Link to comment Share on other sites More sharing options...
14IS350AWDF-Sport Posted March 25, 2014 Author Share Posted March 25, 2014 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? Quote Link to comment Share on other sites More sharing options...
JJFranco Posted March 25, 2014 Share Posted March 25, 2014 I will be waiting for some mods coming out this sumer, CAI, Catback system. Will be flashing the computer once I find the right person to do it. Quote Link to comment Share on other sites More sharing options...
LEX-SV Posted July 9, 2014 Share Posted July 9, 2014 It's goverened at low 140 range. Quote Link to comment Share on other sites More sharing options...
VBdenny Posted August 12, 2014 Share Posted August 12, 2014 I think I read 135 Quote Link to comment Share on other sites More sharing options...
LEX-SV Posted August 13, 2014 Share Posted August 13, 2014 I wonder if speed rating on Lexus specified AWD tires are different, resulting in top speed governor set differently.... Quote Link to comment Share on other sites More sharing options...
LEX-SV Posted August 27, 2014 Share Posted August 27, 2014 The original IS350 came out as 2006 model year in rear wheel drive form only. The data panel in Road and Track article showed 142 as top speed, noting that it was "electronically limited". But that's some time ago, even if it's the same engine. Quote Link to comment Share on other sites More sharing options...
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