tatman

that a regular z28 ls1 (not an ss) is governed at 108mph?

Ericbigmac83

iTrader: (19)

no, some are limited based upon which speed rated tires they get tho

2QUIK4U

iTrader: (7)

Some of the older A4 z28's with 16" wheels and tires were speed limited but I think it was around 112mph.

slikrider20

iTrader: (9)

I read in a car review in the z28 unless you had the z rated tires it was governed at 108....but hell my v6 3.4 is governed at 115 lol

RPM WS6

iTrader: (3)

As stated above, the only way this is true is if the car was originally optioned without the Z-rated tires.

So long as you had the Z-rated tires stock, the factory limit is set to something like 162-163mph.

tatman

im about to buy a 2001 ls1, what info can i provide you guys about the car im looking at to tell me if it has the z rated tires? or what do i have to look at ti see if it has it or not?

12secSS

iTrader: (30)

The tire info should be on the driver's side door jamb. If it states Z-Rated tires, it will be limited to 160 MPH. If it does not have Z-Rated tires, it will be limited to 120 MPH.

68Goatboy

iTrader: (1)

out of everyone here, who sees 160mph on a regular basis?

kozak

iTrader: (2)

haha, 108, haha. but seriously some of the older z28's with a certain performance package (g32?) were governed to 120 you can tell these cars because they have a 120 mph speedo. my dad has one of these cars. it has real low rear end gears and a 120 speedo and "crappy" tires.

Nine Ball

iTrader: (38)

keep in mind that the speed limiters are easily removed with even a simple computer tune or by using something like the Hypertech programmer or such.

tatman

[QUOTE=Nine Ball]keep in mind that the speed limiters are easily removed with even a simple computer tune or by using something like the Hypertech programmer or such.[/QUOTE

thats true, its just hard to comprehend the fact that a 310hp 6 speed 5.7 liter v8 engine would stop at 108 when i did 125 with my P.O.S 4 cylinder passat

staringback05

iTrader: (8)

like stated before it depends also on the tires....your not going to be doing that high of a speed on the non zrated tires for long...

2000badbird

iTrader: (5)

non z rated tires will hold up to high speeds for a little while i would not trust it tho

1meantransam

iTrader: (8)

my friends cut out at 117, mine doesnt cut out even with the programmer off

RPM WS6

iTrader: (3)

I used to run my (non Z-rated) BFG DRs at pretty high speeds on the expressway. They did fine for short blasts, other than feeling a little loose above 110mph.

I think the speed rating will only be an issue for sustained speeds.