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Optimal tyre pressures (not stock width tyres) 

 

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 Post subject: Optimal tyre pressures (not stock width tyres)
Posted: Tue Mar 06, 2007 11:40 am 
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Hey guys, I recently got some Kuhmo Powermax tyres on all corners, but I'm unsure how much air to pump into them.

This is the stats from the tyres:
215/60R15 94H

Now they are 215, which is a little wider than stock, right? (which I think are 205.

The Fairmont has a kerb weight of 1594kg.

So what sort of tyre pressure should I be putting in for optimal wear, fuel economy and handling?

Front, rear, normal and max load.

Thanks lads.

P.S. Right forum? lol.

 

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Posted: Tue Mar 06, 2007 12:07 pm 
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i work in a full service petty station where i spend most of my time pumping tyres lol, generally with any vehicle (excluding trucks and farm equipment) no matter the size of the tyre you still need the same pressure. i usually go between 30 and 35 psi. its the pressure of the air in the tyre that it measures not the amount of air.
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Posted: Tue Mar 06, 2007 12:22 pm 
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OKay, I'll take that on board, thanks.

 

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Posted: Tue Mar 06, 2007 12:38 pm 
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Last edited by blackjack_original on Fri Jun 06, 2014 10:20 pm, edited 1 time in total.

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Posted: Tue Mar 06, 2007 2:54 pm 
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mine arent stock width either, theyre 265 wide and i keep em on 35.
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Posted: Tue Mar 06, 2007 3:56 pm 
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I like mine at 40.
Did you ask the mob that sold you the tyres?

 

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Posted: Tue Mar 06, 2007 4:45 pm 
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my old tyres wer 215's and had those at 32 recomended pressure, my new 1ns r 225's and hav them at 34 recomended

 

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Posted: Tue Mar 06, 2007 4:54 pm 
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I run mine at 36

 

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Posted: Tue Mar 06, 2007 8:53 pm 
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I would of called the mob, but I think we'd have taken ages just agreeing on the brand and model of tyres I got from them just 2 weeks ago, lol.

Plus you're a helpful bunch in here, so why not.

No definitive answer, but I got the general idea (plus it comes down to personal preference I guess).

Cheers lads.

 

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Posted: Tue Mar 06, 2007 8:57 pm 
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Just be careful when checking your spare mate, those boots are deadly I hear...



I have 225/50/R16's and run them around 34....
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Posted: Tue Mar 06, 2007 8:59 pm 
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I run 235/60R15 and use 36 front and 34 rear, but if I go on a trip on the hiway, I let them down to 32 and 30. At hiway speeds, the tyres tend to throw out at the middle and you get a hollow in the middle of the tyre.

 

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Posted: Tue Mar 06, 2007 9:00 pm 
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I have god knows what tyres but are 17s and I have them at 40...too much?

phong =P~

 

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Posted: Tue Mar 06, 2007 9:06 pm 
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phongus wrote:
I have god knows what tyres but are 17s and I have them at 40...too much?

phong =P~


If you only drive it round town, its OK. Helps keep them wearing square.

 

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Posted: Tue Mar 06, 2007 9:14 pm 
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Thanks lads, especially cjh. I'll keep those highway pressures in mind when I eventually go for my Rockhampton roadtrip.

O, and going down to superlows won't effect it at all will it? Won't have to change pressures, right?

 

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Posted: Tue Mar 06, 2007 9:25 pm 
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Till_Lind wrote:
Thanks lads, especially cjh. I'll keep those highway pressures in mind when I eventually go for my Rockhampton roadtrip.

O, and going down to superlows won't effect it at all will it? Won't have to change pressures, right?


How much suspension travel do you still have left???
How come you wanna come up here???? Its hotter here than Brizzy. Its usually hotter here than in Cairns.
Have a good trip, and watch the cops, there are radar traps everywhere.
They ( Qld Govt ) have handed out radar guns like free icecream. Even the cops in One horse/one dog towns have them now.

 

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