I topped mine out at 110 MPH and then the computer cut the gas off to the engine. If it didn't have that cut off switch I could have easily got up to 130-140 MPH. In the owners manual it says that they cut off the engine there because the tires aren't rated for speeds over 110, I wonder if I'd be able to have thatcut off switch disabled if I got better rated tires?

So what's the fastest you've toped your Deville out at?

 

Hey 420: I see that you love speed also, had my 81 Fleetwood up to 145km the other day. Backed off because the speedo doesn't go any higher than that and i didn't want to damage the thing or the car. Yeah faster rated tires, now were talking.

 

taken from the FAQ on tire ratings thread:

 

180 kph, the limiter as car is equipped with S rated Michelins. That's fast enough.

The fastest I drove any car was 240, my BIL's 5.0 LX back in the day. V rated Gatorbacks on that Mustang.
Look back on that now and think how stupid it was. [sm=badidea.gif]

 

But boy what fun you had!!! Great post on the tires there Katz.

 

GM mandates top speed will not excede speed rating of tires car was built with. Indy Allante could run 155mph before speed limiter kicked in, I knew someone who did it on the D.C. beltway, he said it was a trip, never lifting as engine started misfiring. I, myself, 125 mph in a 95 SLS could of gone faster I think ,but I was on a narrow 2 lane highway in deer country at 1 am. I am courious what a euro seville would top out at.

 

I'm curious about what the sls would have looked like at 1am had it hit a deer at 125mph. Do not have disabled airbags while driving on a Bucks County Pa. country road.

 

Its just part of the things that happen when one is young and doesn't think past tommorrow, this tread relates to speed not sense.At 20 mph+ over the penalties are high.... fines, licence problems,jail, and collision and the results of it.

 

Agreed. As I've gotten older I have learned there is a time and place for everything.

 

Hey, Ive put my 1981 Coupe Deville at 85mph would of done more but I did not want to break the speedo. And I put my cts to 100mph.