Fastest you've gone?
#16
Originally posted by brit_lex
I don't know about legal guidelines in the US, but under European law, a new car's speedo is allowed to be up to 10% optimistic. So in theory, if your car's speedo is saying 153 mph, you could actually be doing just 138mph. I think there was a UK car magazine that measured the average "over reading" of speedos in brand new cars, and it was about 4-5%, even in prestige brands. Assuming a particular LS is optimistic at 10%, you would have to be driving at an indicated 170mph to hit the fuel cut off for 155mph. Given the 149mph restriction in US models, you might be able to go up to an indicated 165mph before fuel cut off.
Horta, this might explain why your model was still accelerating at an indicated 153mph.
Food for thought!
I don't know if the gadgets are available in the US, but there are several GPS linked speed camera detectors in the UK that sit on your dashboard and tell you your true MPH versus the speed limit for the road you are on.
I don't know about legal guidelines in the US, but under European law, a new car's speedo is allowed to be up to 10% optimistic. So in theory, if your car's speedo is saying 153 mph, you could actually be doing just 138mph. I think there was a UK car magazine that measured the average "over reading" of speedos in brand new cars, and it was about 4-5%, even in prestige brands. Assuming a particular LS is optimistic at 10%, you would have to be driving at an indicated 170mph to hit the fuel cut off for 155mph. Given the 149mph restriction in US models, you might be able to go up to an indicated 165mph before fuel cut off.
Horta, this might explain why your model was still accelerating at an indicated 153mph.
Food for thought!
I don't know if the gadgets are available in the US, but there are several GPS linked speed camera detectors in the UK that sit on your dashboard and tell you your true MPH versus the speed limit for the road you are on.
#18
Pole Position
LS400s are strange vehicles. I only get about 16-18mpg in stop start traffic, yet onetime when I set the car to cruise control at 120mph for about 100 miles, I managed to get 19mpg.
Calculation uses Imperial gallons which are about 20% smaller than US gallons.
Must be all the aerodynamics at high speeds coming into play.
Have managed to take the car to an indicated 155mph a few times, but each time I had to move out of the way for a chipped Supra or something similar who flew past me up to about 170ish I think. It's a dog eat dog world out there.
Calculation uses Imperial gallons which are about 20% smaller than US gallons.
Must be all the aerodynamics at high speeds coming into play.
Have managed to take the car to an indicated 155mph a few times, but each time I had to move out of the way for a chipped Supra or something similar who flew past me up to about 170ish I think. It's a dog eat dog world out there.
#19
I got my LS up to 145 when I was killing a new maxima, the car still had alot of pull left but by the time I got to 145 I had already proved my point that my car was faster. BTW I only did it because the guy wouldn't leave me alone. I didn't know the 2000 LS was this fast.
#22
Lexus Champion
Sorry to dissapoint but 135 is my quickest... obviously FAR from max velocity... just that Houston has gotten VERY crowded and as pointed out by many already... this is "go to jail" speed. Arguably with good reason. At these speed a car can litterally FLY. Yes, FLY. Nascar has pop up vents in the roof so when those cars loose control and slide sideways they do not FLY off the track. A car turned sideways becomes a wing with the air going over the top accelerating faster than the air going under it... presto... a flying car. Even if you do not get sideways a car out of control (flat tire, trash in road, stray animal, other cars pulling in front of you, suspension/steering failure, bearing failure, brake failure, etc, etc) can cross into oncomming traffic. It is one thing to endanger our own lives, quite another to do so to others.
Regarding speed limiters: as far as I have read (not tested myself) there were no electronic speed limiters at least through 1996 (can't say for euro models). Car & Driver rated the 1990 at 150mph, 1996 at 156mph and 1998 -2000 with a limiter at 149mph (speedo error aside). The 2001+ LS430s are limited to something lik 130mph (need to go back and check but this is very close).
Regarding speed limiters: as far as I have read (not tested myself) there were no electronic speed limiters at least through 1996 (can't say for euro models). Car & Driver rated the 1990 at 150mph, 1996 at 156mph and 1998 -2000 with a limiter at 149mph (speedo error aside). The 2001+ LS430s are limited to something lik 130mph (need to go back and check but this is very close).
#23
Lexus Test Driver
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Originally posted by jbrady
Sorry to dissapoint but 135 is my quickest... obviously FAR from max velocity... just that Houston has gotten VERY crowded and as pointed out by many already... this is "go to jail" speed.
Sorry to dissapoint but 135 is my quickest... obviously FAR from max velocity... just that Houston has gotten VERY crowded and as pointed out by many already... this is "go to jail" speed.
#24
145
empty stretch of highway ver ynice and straight with excellent visibility. My freind in a c5 was doing 120 and was quite a bit ahead so i did 145 and caught up...you should have seen his face
excellent smooth at 145
Im confident if I took a pic it would appear as if i were still
empty stretch of highway ver ynice and straight with excellent visibility. My freind in a c5 was doing 120 and was quite a bit ahead so i did 145 and caught up...you should have seen his face
excellent smooth at 145
Im confident if I took a pic it would appear as if i were still
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