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How much Pressure in your 18" Tires?

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Old 04-18-2005, 03:50 PM
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How much Pressure in your 18" Tires?

So what tire pressure are you guys using on your aftermarket wheels?

I’m running 235/40/18 Kumho Supra 712’s on 18”x8”

The tires listed maximum psi is 44 psi.

I’m running 42 psi up front and 40 psi in the rears?

Is that dangerous or bad?

I just don’t want to bend a wheel.
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Old 04-19-2005, 12:03 PM
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When I had 18s and Kumho 712, I was up there too. I did that to maximize the edge treadblocks when cornering

right now, on my 17s and Nankang NS-2, I have them 44psi all around. Again, it's to make use of the tread blocks.

Jae
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Old 04-19-2005, 02:07 PM
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Dasyce raises a good question (in my book)

is it better to go with the PSI guildlines on the tires? or is there a better Psi rating for a specific size tire?



Cause on my stock 96 sawblades under the arm rest it says 33 psi up front and 32 in the rear, but the tires says it can hold strong up to 44psi.
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Old 04-19-2005, 05:52 PM
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245/40/18 sumitomo htr+ here running 51psi all around just like recommended on the tire..plus the roads are really harsh here..right now the tires feel perfect
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Old 04-19-2005, 06:45 PM
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245/40/18 512s running 36psi all around
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Old 04-19-2005, 07:15 PM
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Originally Posted by Ammi
245/40/18 512s running 36psi all around

damn man why so low?
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Old 04-19-2005, 08:01 PM
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i don't know, i'm kinda dissapointed that my tires max PSI is 44,

I lowered the cold PSI to 39, i can't imagine going any lower

the ride was always smooth with H&R's and Illumina's

Next time i buy tires my Max Psi will be over 50 PSI so i can comfortable ride at 45PSI
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