Anyone else have problems at highspeeds?

Jinxx · 01-31-2016, 08:49 PM

Have you tried not going that fast on dirt roads ?....

UNKNOWN_370 · 02-01-2016, 04:24 AM

I hit 148mph.... No problem, but I have sport pig.

Exhaust · 02-01-2016, 06:02 AM

What do your tires look like? That can most certainly play a factor or it could very be that you've just never driven that fast in a sports car (no shade).

vrizzo53 · 02-01-2016, 07:09 AM

Quote:

Originally Posted by Exhaust

What do your tires look like? That can most certainly play a factor or it could very be that you've just never driven that fast in a sports car (no shade).

I have 4 Yokohamas and that can be possible it could just be me, I'm going to still bring it into the mechanic to have the alignment done

IAmTheStig · 02-01-2016, 07:46 AM

I have a sport with the forged 19" wheels, and I've found that the car is extremely sensitive to tire pressure. If it is a couple pounds too high (cold pressure btw) the car will seem to wander or drift in the lane at normal highway speeds. I dropped the pressure 5 lbs (found out I had a bad tire gauge...) and it was a different car - totally stable.

Get a good tire gauge and check the tires. Too high is just as bad as too low. The correct tire pressures are on a sticker on the inside of the driver door jamb.

Good luck!

pokeyl · 02-01-2016, 07:52 AM

Our cars have a very short wheel base. Any of the above effects the Z more than other cars. Corvettes have 8-9 inch longer wheel base just to aid high speed. Even the 350 is longer, just park next to one and you can see it.

Check tires/pressures, then take it in to the shop.

Ghostvette · 02-01-2016, 01:00 PM

Quote:

Originally Posted by vrizzo53

I have 4 Yokohamas and that can be possible it could just be me, I'm going to still bring it into the mechanic to have the alignment done

A couple of things come to mind; look at and measure the tread depth. If you are north of 30k on the car and haven't bought tires, then there is your issue, especially if you bought the car new. The factory Advans are only good to about 30k, after that, they get squirrelly as hell.

On a side note: Where in radioactive land (NJ) can you drive 80+?

BC416 · 02-01-2016, 01:10 PM

Quote:

Originally Posted by Ghostvette

On a side note: Where in radioactive land (NJ) can you drive 80+?

65mph speed limit means you gotta do about 80 to not get passed. As South Park said "It's a Jerzy thing".

As for the OP, start with something simple. Check your tire pressure and go from there.

vrizzo53 · 02-02-2016, 11:13 AM

Quote:

Originally Posted by Ghostvette

A couple of things come to mind; look at and measure the tread depth. If you are north of 30k on the car and haven't bought tires, then there is your issue, especially if you bought the car new. The factory Advans are only good to about 30k, after that, they get squirrelly as hell.

On a side note: Where in radioactive land (NJ) can you drive 80+?

Haha thank you all for your input I really do appreciate every single post you all took the time out to post. And I don't do it often only when I have a OPENING road with no cars and where I know I can hit those speeds. We have a few major roads here where you can "safely"? Reach those speeds but not sustain it for a long time due to speed checkpoints, my car is going in today at the tire shop I'll have them check everything that has been posted in this log. Will give my diagnostics when it's complete

JARblue · 02-02-2016, 12:14 PM

Quote:

Originally Posted by vrizzo53

Haha thank you all for your input I really do appreciate every single post you all took the time out to post

FYI, Mr. Onzedge is here to help

FPenvy · 02-01-2016, 07:55 AM

check tires, suspension, alignment.

at 120+ the car feels like you're at a cruising speed on the highway. even up at 150-170 (on roads in mexico) it still feels planted.

Leingod · 02-01-2016, 08:03 AM

Quote:

Originally Posted by FPenvy

check tires, suspension, alignment.

at 120+ the car feels like you're at a cruising speed on the highway. even up at 150-170 (on roads in mexico) it still feels planted.

Don't listen to this guy ^^^. He only uses his right foot.

No but seriously.... 305's or

FPenvy · 02-01-2016, 08:05 AM

Quote:

Originally Posted by Leingod

Don't listen to this guy ^^^. He only uses his right foot.

No but seriously.... 305's or

haha hate you.

but even with stock 275 rears I topped it out (pretune) at 160.

the stickier 305 rears do add a little more confidence

onzedge · 02-01-2016, 08:16 AM

I never drive above the posted speed limit as far as you know.

FairladyZ40th · 02-01-2016, 12:50 PM

Alignment for sures and balance

Sent from my iPhone using Tapatalk

02-01-2016, 04:24 AM	#2 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14859	I hit 148mph.... No problem, but I have sport pig. __________________ Favorite Quote. "I'm not gonna kill you... I'm just gonna Bash Your Face In" Jack Nicholson-"The Shining". 1980

02-01-2016, 07:52 AM	#6 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 906 Drives: ??? Rep Power: 56	Our cars have a very short wheel base. Any of the above effects the Z more than other cars. Corvettes have 8-9 inch longer wheel base just to aid high speed. Even the 350 is longer, just park next to one and you can see it. Check tires/pressures, then take it in to the shop. __________________ It's not my fault I'm old, I was born a very long time ago!

02-01-2016, 08:16 AM	#14 (permalink)
onzedge A True Z Fanatic Join Date: Apr 2010 Location: Battle Lake MN Age: 65 Posts: 183,964 Drives: 370Z 240Z Rep Power: 2684738	I never drive above the posted speed limit as far as you know. TerribleONE, Streetlife, JARblue and 4 others like this. __________________ Koni\|Swift\|Michelin\|Motordyne\|Berk\|RJM Performance\|Gates\|SPL\|Motul\|Technafit\|Ate Super Blue\|Hawk Tommy Kaira\|Momo\|Optima\|Hella\|Hotchkis\|Red Line\|ZSpeed\|Stillen\|B&M\|H&R

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01-31-2016, 08:49 PM	#1 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3377	Have you tried not going that fast on dirt roads ?....

02-01-2016, 06:02 AM	#3 (permalink)
Exhaust Enthusiast Member Join Date: Mar 2015 Location: Nowhere Posts: 277 Drives: 2015 AT GM Z Rep Power: 27	What do your tires look like? That can most certainly play a factor or it could very be that you've just never driven that fast in a sports car (no shade).

02-01-2016, 07:46 AM	#5 (permalink)
IAmTheStig Base Member Join Date: Feb 2014 Location: Michigan Posts: 50 Drives: 2014 370z Coupe Rep Power: 13	I have a sport with the forged 19" wheels, and I've found that the car is extremely sensitive to tire pressure. If it is a couple pounds too high (cold pressure btw) the car will seem to wander or drift in the lane at normal highway speeds. I dropped the pressure 5 lbs (found out I had a bad tire gauge...) and it was a different car - totally stable. Get a good tire gauge and check the tires. Too high is just as bad as too low. The correct tire pressures are on a sticker on the inside of the driver door jamb. Good luck!

02-01-2016, 12:50 PM	#15 (permalink)
FairladyZ40th Enthusiast Member Join Date: Jul 2015 Location: San Diego Posts: 483 Drives: 2010 370z 40th 6MT Rep Power: 63	Alignment for sures and balance Sent from my iPhone using Tapatalk