top speed limit...

[xsoutherngun89x]

I know the GT's that came with 16's have a limit of 120(know that for a fact, lol),
but whats the limit for the 17' GT's??? Also, why is the limit lower, my guess is the
tires came with a lower speed rating. I dunno tho

 

[Lightning Struck]

I think the 17's were ZR rated if they were its like 155 right :dunno:

 

[smokeybear]

my gt the speedo stops at 145

 

[xsoutherngun89x]

yea in my 98 when i hit 120 its like hittin a freakin wall, lmao.
ure pullin and pullin and then boom, lol. its crazy how much i
actually feel. haha. almost like the car hit the brakes. i know
its just cutting cylinders tho.

 

[Lightning Struck]

my gt the speedo stops at 145

you mean the car wont go faster than 145???? or are you saying the display on the speedo the max speed is 145.....that cant be right, GT's have a 150 speedo?

 

[Black97GT]

My gt came with 16's and I have had it over 120 : (in mexico once I hit 135 or so uttahere

 

[Paul]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

 

[Lightning Struck]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

I imagine it contributes, but may not be the BOTTOM line in what the speed limiter is set at.

 

[Steven]

i've had my speedo pegged (shhhhhhh) and the car was fine.. i did turn off the speed limiter with the predator though > But then again my speedo is off due to the gear :hammer:

 

[AaRoN]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

for safety reasons: It is!

 

[AaRoN]

Speed Rating

In Europe, where selected highways do not have speed limits and high speed driving is permitted, speed ratings were established to match the speed capability of tires with the top speed capability of the vehicles to which they are applied. Speed ratings are established in kilometers per hour and subsequently converted to miles per hour (which explains why speed ratings appear established at "unusual" mile per hour increments). Despite the tire manufacturer's ability to manufacturer tires capable of high speeds, none of them recommend the use of their products in excess of legal speed limits.

17 inch tires: While a Z-speed rating still often appears in the tire size designation of tires, such as 225/50ZR16 91W, the Z in the size signifies a maximum speed capability in excess of 149 mph ; the W in the service description indicates the tire's 168 mph maximum speed.
So basically the factory tires (17's) are rated at up to 168mph.

16 inch tires: Mustangs with the 16's (yuk) were rated at up to 130mph.

 

[Paul]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

I imagine it contributes, but may not be the BOTTOM line in what the speed limiter is set at.

I'm not sure I understand what you're saying. The governor built into the ECU doesn't care what size tires you have.

 

[Lightning Struck]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

I imagine it contributes, but may not be the BOTTOM line in what the speed limiter is set at.

I'm not sure I understand what you're saying. The governor built into the ECU doesn't care what size tires you have.

but the factory that makes the cars do, Im saying that the speed limiter is set no higher than the limt of the factory installed tires on the car in question.

 

[smokeybear]

my gt the speedo stops at 145

you mean the car wont go faster than 145???? or are you saying the display on the speedo the max speed is 145.....that cant be right, GT's have a 150 speedo?

No my car wont go faster than 145

 

[Paul]

I'm pretty sure the tire size is not the determining factor in the top speed limiter.

I imagine it contributes, but may not be the BOTTOM line in what the speed limiter is set at.

I'm not sure I understand what you're saying. The governor built into the ECU doesn't care what size tires you have.

but the factory that makes the cars do, Im saying that the speed limiter is set no higher than the limt of the factory installed tires on the car in question.

I doubt there is a difference in the ECU top-speed limiter between, say, a 1995 GT with 16" rims or a 1995 GT with 17" rims. Does that make sense? There may be a difference between the V6 and V8 models though.

 

[Spd0lit]

one thing i'm worried about

"i know its just cutting cylinders tho" :hammer:

 

[ALITL8]

The governor built into the ECU doesn't care what size tires you have.

that being said... ours never had the governor turned on :dunno: ive been up to 135 more than once and am a member of the Texas and Oklahoma 100 mile an hour club ;D

 

[xsoutherngun89x]

one thing i'm worried about

"i know its just cutting cylinders tho" :hammer:

well i dont know if thats exactly what its doing but it has the same feeling. not like a rev limiter, but like
the computer tells it "no more", lmao. im not makin much sense... :drunk:...but im sure yall have hit the
speed limiter before and now the feeling im talkin about.

 

[1996mustangGT]

ummm in my 96 ive gotten to like 145...
on stone stock everything...(well K&N FIPK)
mine is an auto dont think that'd make a diffrence tho :nonono: