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Auto Talk => The Garage => Topic started by: JYODER240 on April 11, 2006, 08:30:15 PM

Title: What PSI?
Post by: JYODER240 on April 11, 2006, 08:30:15 PM
I went to get my oil changed today and they said the set my tire pressure to 50psi. Does this sound way to high to anyone else? I run 225/40/18 and normally have them at 35psi.
Title: What PSI?
Post by: Speed_Racer on April 11, 2006, 08:34:00 PM
Wow...that sounds rediculously high. 35 seems about right for a low profile tire like that.

On my 205/40/17s, I run about 38psi.
Title: What PSI?
Post by: Rupert on April 11, 2006, 08:34:57 PM
Jesus, yeah, that's high! There should be a sticker in the door area that will give you the recommended pressure. I generally would use that, assuming that pressure isn't out of the range given on the sidewall of the tires.
Title: What PSI?
Post by: Raza on April 11, 2006, 08:35:54 PM
I've never had 18s, but on my 225/50/16s I ran 30, and on my 195/65/15s I run 35 (as per manufacturer's recommendation).  Look in your book, gas cap, or door sill and see what you should be running.

50 sounds quite high, though.

I think it has more to do sidewall height than all out size, anyway.  But 50 seems too high.
Title: What PSI?
Post by: JYODER240 on April 11, 2006, 08:36:19 PM
^ the wheels are 2" larger than whats stock, so I don't think that sticker applies.
Title: What PSI?
Post by: Raza on April 11, 2006, 08:37:12 PM
QuoteJesus, yeah, that's high! There should be a sticker in the door area that will give you the recommended pressure. I generally would use that, assuming that pressure isn't out of the range given on the sidewall of the tires.
The range on my E320 was somewhere between 28 and 32, I think 35 and 50 seems like a bit of a stretch.  

I say check it with your gauge, and then let some air out, or avoid potholes like your life depended on it.
Title: What PSI?
Post by: 93JC on April 11, 2006, 08:46:57 PM
50?! Holy mother of crap, no!

30-33ish, ballpark.

Title: What PSI?
Post by: saxonyron on April 11, 2006, 08:47:00 PM
I ran the same tires on my A6.  The car weighed 3,800 lbs and around 60% was on the front tires, so call it 2,300 lbs.  That's a lot of weight.  I ran 38 PSI front, 35 rear.  50 PSI could easily cause a blowout - these tires need have stiff sidewalls.  They need to flex a little, and stuffing so much air in their would cause a bubble or worse.  Something has to give when the tire hits a pothole! Sounds like your shop monkey needs to stick to changing oil and should lay off the hallucinagenics!

BTW, do you need a couple Toyo Proxes 4's with about 75% tread left?  Those tires kick ass and not whey're collecting dust in my garage.  :lol:  
Title: What PSI?
Post by: footoflead on April 11, 2006, 08:52:03 PM
QuoteI've never had 18s, but on my 225/50/16s I ran 30, and on my 195/65/15s I run 35 (as per manufacturer's recommendation).  Look in your book, gas cap, or door sill and see what you should be running.

50 sounds quite high, though.

I think it has more to do sidewall height than all out size, anyway.  But 50 seems too high.
No because the truck and the mustang run similar PSI's
Title: What PSI?
Post by: JYODER240 on April 11, 2006, 08:52:26 PM
Thanks for the offer but my car is gone in 2 months and i'm selling the wheels and tires on ebay.
Title: What PSI?
Post by: Raza on April 11, 2006, 08:53:59 PM
Quote
QuoteI've never had 18s, but on my 225/50/16s I ran 30, and on my 195/65/15s I run 35 (as per manufacturer's recommendation).  Look in your book, gas cap, or door sill and see what you should be running.

50 sounds quite high, though.

I think it has more to do sidewall height than all out size, anyway.  But 50 seems too high.
No because the truck and the mustang run similar PSI's
Truck tires and car tires are different.
Title: What PSI?
Post by: footoflead on April 11, 2006, 08:55:46 PM
50psi..holy mother of god...danger danger....danger will robinson, oh wait..wrong name, sorry but seriously dude let some air out of those bad boys
Title: What PSI?
Post by: JYODER240 on April 11, 2006, 08:57:17 PM
Isn't like 70psi used to seat the bead? I always couldn't beleive it when I heard them say 50.
Title: What PSI?
Post by: saxonyron on April 11, 2006, 08:58:06 PM
QuoteThanks for the offer but my car is gone in 2 months and i'm selling the wheels and tires on ebay.
Hell, I would have rolled them from NH to Ohio!  OK, maybe not!  I ought to sell these off on Ebay too - too much of a PITA to do it, though.  Maybe my wife who luxuriates around the house all day could turn that deal for me.  :rockon:  I got 4 more tires, the slightly damaged BBS 18" rims, 4 OEM A6 springs - my garage will be looking redneck if I don't get all that crap out of there.  :blink:  
Title: What PSI?
Post by: Raza on April 11, 2006, 09:04:35 PM
What's the size of the Toyos?  I may need them in a little while.  
Title: What PSI?
Post by: Run Away on April 11, 2006, 09:06:27 PM
Inflate them to 30psi.

Put some chalk on the sidewall, covering from the ground to the rim.

Go take a few hard corners.


Check your sidewalls, if chalk has been rubbed off inflate them more and repeat till the chalk is no longer getting rubbed off.
Title: What PSI?
Post by: JYODER240 on April 11, 2006, 09:10:11 PM
Thanks for the tip RunAway. I just set them all to 34psi, I read the sidewall and it says never exceed 40psi when seating the bead, and those morons put them at 50!
Title: What PSI?
Post by: footoflead on April 11, 2006, 09:37:31 PM
QuoteThanks for the tip RunAway. I just set them all to 34psi, I read the sidewall and it says never exceed 40psi when seating the bead, and those morons put them at 50!
:ph34r:

holy tire pressure batman!
Title: What PSI?
Post by: saxonyron on April 11, 2006, 10:11:00 PM
QuoteWhat's the size of the Toyos?  I may need them in a little while.
225 40 18's, just like JYoDeR's - but I only have 2. Are you gonna trick out the Passat?  :lol:  
Title: What PSI?
Post by: Raza on April 12, 2006, 07:57:54 AM
Quote
QuoteWhat's the size of the Toyos?  I may need them in a little while.
225 40 18's, just like JYoDeR's - but I only have 2. Are you gonna trick out the Passat?  :lol:
Hehe...if all goes as planned (how many times have I said that?) the Passat will (somewhat regrettably) leave my possession around the end of the summer, unless something comes along (like the new TT) that makes wait.
Title: What PSI?
Post by: Fire It Up on April 12, 2006, 08:52:59 AM
QuoteThanks for the offer but my car is gone in 2 months and i'm selling the wheels and tires on ebay.
Whate are you replacing it with?
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 11:20:38 AM
The GTO, 350Z, Mustang GT, S2000, RX-8, and 330i are all in the running. Although, i'm leaning towards the 350Z.
Title: What PSI?
Post by: Fire It Up on April 12, 2006, 01:12:16 PM
350Z over a GTO?
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 01:42:30 PM
I know the GTO is a great car it just does nothing for me, maybe that will change after a test drive.
Title: What PSI?
Post by: Laconian on April 12, 2006, 01:53:50 PM
Go out and test it. Raza's perception of the GTO changed drastically after he drove it.

It won't be around for much longer, so who knows, depreciation might be kind to it due to its relative rarity (at least as far as domestics are concerned.)
Title: What PSI?
Post by: Speed_Racer on April 12, 2006, 01:59:42 PM
Hmm...I want a GTO.
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 02:13:55 PM
I'm going to have a hard time getting over the GTO's exterior.
Title: What PSI?
Post by: Raza on April 12, 2006, 02:29:58 PM
QuoteI'm going to have a hard time getting over the GTO's exterior.
I think it looks brilliant, if anything the 350Z is a bit childish.  

If I had to choose between the 350Z and the GTO, I know what I'd go with every time.  The GTO is the car that made the STI boring.

I mean, the 350Z is a quick car, but it's not easily moddified, so even after dumping four or five grand into it, the GTO will still run circles around it.  The power will scare you, considering you've never had a RWD car before, but you'll get used to it (or die).  

All in all the GTO is a better car than the 350Z and RX-8, and most certainly more exciting than the 330i.  It's also cheaper than the 350 and the 330.  
Title: What PSI?
Post by: Raza on April 12, 2006, 02:31:57 PM
QuoteI'm going to have a hard time getting over the GTO's exterior.
I think it looks brilliant, if anything the 350Z is a bit childish.  

If I had to choose between the 350Z and the GTO, I know what I'd go with every time.  The GTO is the car that made the STI boring.  
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 07:17:03 PM
I agree the 350Z's styling is a bit juvenile especialy with its way-too-high beltline but it seems like it has a lot of strenghts and not many weaknesses. The GTO is a very strong car but its styling is too bland IMO and those fake hoodscoops are ridiculous. I don't plan on doing many mods if any at all so thats not really a factor.  
Title: What PSI?
Post by: Speed_Racer on April 12, 2006, 11:20:51 PM
QuoteI agree the 350Z's styling is a bit juvenile especialy with its way-too-high beltline but it seems like it has a lot of strenghts and not many weaknesses. The GTO is a very strong car but its styling is too bland IMO and those fake hoodscoops are ridiculous. I don't plan on doing many mods if any at all so thats not really a factor.
If I recall correctly, those hood scoops on the GTO aren't fake. Ford does fake scoops on their Mustangs, but Pontiac put the real deal on the Goat.

They are not Ram Air units, but instead feed cool air into the engine compartment.
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 11:30:30 PM
There are no fake scoops on the Mustang GT, and the GTO's look ridiculous nonetheless.
Title: What PSI?
Post by: Speed_Racer on April 12, 2006, 11:38:50 PM
Whoops, forgot that the current Mustang has real scoops.

And also, you can choose to delete the scoops on the GTO.
Title: What PSI?
Post by: JYODER240 on April 12, 2006, 11:40:48 PM
Not anymore, you have to buy the 04 hood.
Title: What PSI?
Post by: Raza on April 13, 2006, 07:15:48 AM
QuoteI agree the 350Z's styling is a bit juvenile especialy with its way-too-high beltline but it seems like it has a lot of strenghts and not many weaknesses. The GTO is a very strong car but its styling is too bland IMO and those fake hoodscoops are ridiculous. I don't plan on doing many mods if any at all so thats not really a factor.
If they were fake hood scoops, I'd agree with you, but they're not (they're also across the Monaro line, so it's not just the GTO that got them).  They're functional, and they help the engine breathe.
Title: What PSI?
Post by: Raza on April 13, 2006, 07:16:49 AM
QuoteWhoops, forgot that the current Mustang has real scoops.

And also, you can choose to delete the scoops on the GTO.
The Mustang doesn't have scoops anymore, nor do they have the fake side intakes of the old model.
Title: What PSI?
Post by: Speed_Racer on April 13, 2006, 11:27:58 AM
Quote
QuoteWhoops, forgot that the current Mustang has real scoops.

And also, you can choose to delete the scoops on the GTO.
The Mustang doesn't have scoops anymore, nor do they have the fake side intakes of the old model.
That's already been brought to my attention.

:lol:


I'm 0/2 on the whole hood scoops issue. Way to go, me!
Title: What PSI?
Post by: sparkplug on April 15, 2006, 10:19:30 PM
If you could twin-turbo charge a 350Z, then it would be bad. bad bad bad bad bad. Carbon fiber body instead of steel. Oh yeah. Two seater version. But I doubt it'll happen. Too bad.  :(

You can by the way get an aftermarket hood scoop for the new mustang that is functional and look cool.  :rockon:  
Title: What PSI?
Post by: JYODER240 on April 15, 2006, 10:27:46 PM
The make twin-turbo kits for the 350Z, with installation and all the goodies its around 6-8K and with all the mods you can have a car with around 450rwhp. A carbon fiber body would be extremely expensive.  
Title: What PSI?
Post by: 280Z Turbo on April 16, 2006, 12:21:13 AM
I have a friend with Kuhmo Ecstas on his Z and he says that he inflates them to somewhere in the 40s. Anything less and it gets mushy, aparently.
Title: What PSI?
Post by: Raza on April 23, 2006, 12:08:52 PM
QuoteThe make twin-turbo kits for the 350Z, with installation and all the goodies its around 6-8K and with all the mods you can have a car with around 450rwhp. A carbon fiber body would be extremely expensive.
A magazine did a roundup of tuned Z cars, and the ones that were FI didn't end up winning, it was an NA one.  

Depending on the cost of a new hood, I'd get a Stillen supercharger.
Title: What PSI?
Post by: JYODER240 on April 23, 2006, 12:23:14 PM
Not to many people go SC with their 350Z's but I'd be something I'd consider allong with twin-turbo's if I decided to modify. Honestly though I doubt I will, I'll have the Z as my sports car and then try to get a truck next year or so, so I can start working for my dad. I'll make much better money then and if I want something with alot of power I can try to get a sportbike.
Title: What PSI?
Post by: Raza on April 23, 2006, 12:24:58 PM
Bikes are a whole different story.  I don't think having one would satiate my need for fast cars.
Title: What PSI?
Post by: JYODER240 on April 23, 2006, 12:29:05 PM
I wouldn't mind having a car that is quick in a straight line and handles well, and then a bike for insane acceleration.
Title: What PSI?
Post by: Raza on April 23, 2006, 12:41:43 PM
QuoteI wouldn't mind having a car that is quick in a straight line and handles well, and then a bike for insane acceleration.
I can't get over the vulnerability of the bike.  I'd always feel like I needed a seat and a windscreen and two extra wheels.

My ideal motorcycle would be an Aerial Atom or a VW GX3.
Title: What PSI?
Post by: JYODER240 on April 23, 2006, 12:52:23 PM
Have you ever rode one? It's blast getting to lean in through curves, and the vulnerability kind of adds to the excitement.
Title: What PSI?
Post by: Raza on April 23, 2006, 01:15:55 PM
QuoteHave you ever rode one? It's blast getting to lean in through curves, and the vulnerability kind of adds to the excitement.
I've never driven one, but I rode shotgun once when I was a kid.  
Title: What PSI?
Post by: JYODER240 on April 23, 2006, 01:17:31 PM
It's addicting.
Title: What PSI?
Post by: Raza on April 23, 2006, 01:22:18 PM
Pretty much the only reason I'd get a bike is what I said in the Motorbikes thread...if I lived in a city.