Stock Tire Pressure - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thewholefnshow · 03-08-2002, 07:17 AM

I have been hitting bumps and shit lately and I thought that there was a prob with my suspension (made a post complaining about that... turns out it is just too soft for my liking... anyways) I have been hitting bumps not hard and it seems like the tire is just buckling and I am bottoming to the wheel sometimes.... I check the tires, they are all at 29, just like the owners manual and everything said... 29 seems low to start... they are the 15 inch wheels... anyone just say screw it and run 35psi.. cause that is what I am about to do to firm it up a little...

240 2NR · 03-08-2002, 07:55 AM

I did.  Ran 31-33psi for a while and my stcok size tires were showing signs of overinflation so I dropped back to 30-32psi.  Felt to mushy so I decided to just screw it and go 34-35 all around.  Feels MUCH better.  I'll probably wear the tires out quick, but they suck and I'm getting some 225/50/16's this spring, so it will only help to justify the purchase.

thewholefnshow · 03-08-2002, 08:29 AM

I am on winter tires too right now so that doesn't help to be sure... but still. Anybody else have this problem?

MyFirst240SX · 03-08-2002, 08:36 AM

I had about 8 pounds of pressure in one of my back tires yesterday. i could feel it too. i hope i dont have a nail in it. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'>

*drifterx* · 03-08-2002, 08:51 AM

i have a nail  in my tire...
it seems like i always have a flat with the 240sx.... i think there is some monster that likes to puncher 240sx in MA

240 2NR · 03-08-2002, 09:10 AM

My snow tires (arctic alpins) are back on, and had about 32 psi when cold in my garage when I remounted them on my car for the third time this winter.  Though when I looked at my back tire last weekend when it was really cold, based on its shape I would guess 28-30psi is more likely right now.

I would say run about 30-32 psi or so.  I think with snow tires you just have to live with a squirmy ride.  Its like driving on pencil erasers, plus the sidewall is desgined to flex and be soft for cold temperature grip.

thewholefnshow · 03-08-2002, 11:28 AM

Thanks... I know there are few canadians here, but soon I am putting on the tires that came with the car (for now) a set of Pacemarks.... the treadwear rating is 440... should be good for overinflating and burnouts for one summer... then mags and 17s all the way. Thanks guys.

240sxracer · 03-08-2002, 04:19 PM

when it comes to tire psi dont go by the book(there not the tires that came with the car at the factory)
check your tires look at the side wall and do just a little below max psi for example i still have my stock rims and the tires on them are 35psi max so i keep it about 33-35(your tire may be different

Natty · 03-08-2002, 04:28 PM

You guys are all talking cold pressure right? Like a sitting car for about 4 hours?
Jeff

Danio · 03-08-2002, 04:45 PM

Yes 29 feels/looks mushy. The tires get compressed a LOT when cornering hard. I have stock tires (Federal) in front with 35 psi instead (different tires in back) but I'll be replacing them soon.

tnord · 03-08-2002, 06:14 PM

29psi? 8psi? are you guys insane? why don't you just wrap your wheels in a marshmallow, it probably has the same stiffness.

i, along with most of the people at the track on street tires run right around 40psi in the summer. and right around 35 in the winter.

03-08-2002, 07:55 AM	#2
240 2NR Zilvia FREAK! Join Date: Dec 2001 Location: Denver Posts: 1,131 Trader Rating: (0) Feedback Score: 0 reviews	I did.  Ran 31-33psi for a while and my stcok size tires were showing signs of overinflation so I dropped back to 30-32psi.  Felt to mushy so I decided to just screw it and go 34-35 all around.  Feels MUCH better.  I'll probably wear the tires out quick, but they suck and I'm getting some 225/50/16's this spring, so it will only help to justify the purchase. __________________ Steve 93 240sx FB currently very clean and for sale

03-08-2002, 08:36 AM	#4
MyFirst240SX Zilvia Junkie Join Date: Dec 2001 Posts: 599 Trader Rating: (0) Feedback Score: 0 reviews	I had about 8 pounds of pressure in one of my back tires yesterday. i could feel it too. i hope i dont have a nail in it. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'> __________________ It is better to drive a Slow car fast than to drive a fast Car slow! '89 FastBack 5spd: Intake/Exhaust,Strut Bars and JL15. '90 Parts car/Some day drag car.

03-08-2002, 08:51 AM	#5
drifterx Premium Member Join Date: May 2001 Location: boston, ma Age: 44 Posts: 1,533 Trader Rating: (0) Feedback Score: 0 reviews	i have a nail  in my tire... it seems like i always have a flat with the 240sx.... i think there is some monster that likes to puncher 240sx in MA __________________ I am GOD!

03-08-2002, 09:10 AM	#6
240 2NR Zilvia FREAK! Join Date: Dec 2001 Location: Denver Posts: 1,131 Trader Rating: (0) Feedback Score: 0 reviews	My snow tires (arctic alpins) are back on, and had about 32 psi when cold in my garage when I remounted them on my car for the third time this winter.  Though when I looked at my back tire last weekend when it was really cold, based on its shape I would guess 28-30psi is more likely right now. I would say run about 30-32 psi or so.  I think with snow tires you just have to live with a squirmy ride.  Its like driving on pencil erasers, plus the sidewall is desgined to flex and be soft for cold temperature grip. __________________ Steve 93 240sx FB currently very clean and for sale

03-08-2002, 04:19 PM	#8
240sxracer Zilvia Member Join Date: Oct 2001 Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	when it comes to tire psi dont go by the book(there not the tires that came with the car at the factory) check your tires look at the side wall and do just a little below max psi for example i still have my stock rims and the tires on them are 35psi max so i keep it about 33-35(your tire may be different __________________ 1990 240sx FastBack 1965 Ford F100

03-08-2002, 07:17 AM	#1
thewholefnshow Zilvia Addict Join Date: Nov 2001 Posts: 672 Trader Rating: (0) Feedback Score: 0 reviews	I have been hitting bumps and shit lately and I thought that there was a prob with my suspension (made a post complaining about that... turns out it is just too soft for my liking... anyways) I have been hitting bumps not hard and it seems like the tire is just buckling and I am bottoming to the wheel sometimes.... I check the tires, they are all at 29, just like the owners manual and everything said... 29 seems low to start... they are the 15 inch wheels... anyone just say screw it and run 35psi.. cause that is what I am about to do to firm it up a little...

03-08-2002, 08:29 AM	#3
thewholefnshow Zilvia Addict Join Date: Nov 2001 Posts: 672 Trader Rating: (0) Feedback Score: 0 reviews	I am on winter tires too right now so that doesn't help to be sure... but still. Anybody else have this problem?

03-08-2002, 11:28 AM	#7
thewholefnshow Zilvia Addict Join Date: Nov 2001 Posts: 672 Trader Rating: (0) Feedback Score: 0 reviews	Thanks... I know there are few canadians here, but soon I am putting on the tires that came with the car (for now) a set of Pacemarks.... the treadwear rating is 440... should be good for overinflating and burnouts for one summer... then mags and 17s all the way. Thanks guys.

03-08-2002, 04:28 PM	#9
Natty Zilvia Addict Join Date: Dec 2001 Location: Nashville, TN Posts: 944 Trader Rating: (0) Feedback Score: 0 reviews	You guys are all talking cold pressure right? Like a sitting car for about 4 hours? Jeff __________________ 1991 White 240sx Fastback LE, rusty spoiler, weak driveshaft, exhaust rattle.... Rattles are just your cars way of saying 'I love you.'

03-08-2002, 04:45 PM	#10
Danio Zilvia FREAK! Join Date: Oct 2001 Location: SJ Bay Area Posts: 1,002 Trader Rating: (0) Feedback Score: 0 reviews	Yes 29 feels/looks mushy. The tires get compressed a LOT when cornering hard. I have stock tires (Federal) in front with 35 psi instead (different tires in back) but I'll be replacing them soon. __________________ DKwan.com

03-08-2002, 06:14 PM	#11
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	29psi? 8psi? are you guys insane? why don't you just wrap your wheels in a marshmallow, it probably has the same stiffness. i, along with most of the people at the track on street tires run right around 40psi in the summer. and right around 35 in the winter.