Cadillac Seville / Cadillac Eldorado Forum Discussion, Z speed rated 97 STS in Past Cadillac Vehicle Discussion; Originally Posted by blackfrontier
It's nice knowing my 95 STS is Z rated, but I will never push it to ...
Automobile(s): 2005 White Diamond STS N* 1SF RWD ACC/HUD
Re: Z speed rated 97 STS
Originally Posted by blackfrontier
It's nice knowing my 95 STS is Z rated, but I will never push it to it's limit. The last time I pushed a car past a hundred down an open road caused me two totaled cars when somebody pulled out in front of me and I couldn't stop in time.
Thats my point. What is open? heading down a rural road late at night (going over 100)and nobody around? A truck pulled out of an hidden side street and I hit the brakes about 50 feet before I saw him(Probably slowed to about 70). I hit him in the side of his pickup bed above the rear wheel. I almost tore that bed clean off! His rear bumper shot off and went through a wooden fence, his canopy shattered and a mountain bike in the bed of his truck looked like a pretzel. My 73 Buick suffered a totaled front end that jammed up the drivers door so I couldn't get out. My car spun off the back of the pickup and went over a curb side ways ruining the suspension and blowing 3 tires. I also ended up going through a wooden fence and came to a stop near a house in their back yard. This was right after I got my drivers license! I havent done that again and havent had a accident or ticket since(20 years now). Be carefull if you screw around behind a wheel. You can never predict what others will do. I suppose on a desert highway with visability for miles would be ok, but you never know for sure.
Call me stupid but I do not understand Z rating. Is my 97 eldo 4.6 touring model Z rated ? does it mean it will go over 110 mph? I know in a quarter mile that the local street racers use I have run it up to 110 and let off the gas way before the finish line. all i have done to this beauty is put a set of flowmasters on it now all the stangs around want to race this old man. Sometimes I give em more than they expect from a caddy.
Z rated means your car doesn't have a governor to control your top speed. Look inside your door jam at the tag there. It will give you a letter code. Z rated cars had to have performance tires from the factory that were also Z rated. In theory a Z rated car should go up to its 145-150 MPH limit.
Is The Z A Part Of The Vin Number? I Will Look For The Z In The Morning I Have Only Had This Beast Up To 110 And Backed Off Of It So I Don't Really Know If Its Z Rated Or Not. If Its Not Can The Governor Be By Passed Without Too Much Expense?
No. The Z is on the label on the driver's door jam. It's located with the tire information, as it's stating that the car comes equipped with tires with a "Z" speed rating, as seen in the pic below. (Look in the center of the pic).