Tire psi
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From: Western NY
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doesn't care about traction, uneven/premature wear, or even tire failure would be my best guess
... the op could have the tpms turned off with a tech2, I don't have issues with that personally but I do not recommend running the tires at that high of a pressure
... the op could have the tpms turned off with a tech2, I don't have issues with that personally but I do not recommend running the tires at that high of a pressure
Racer
Joined: Feb 2015
Posts: 299
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From: Chambersburg PA
So many people look at the side of a tire and it will have a "max pressure 45" and think thats what you should air to, but that is a safety warning.
There is a sticker from the manufacturer on most vechicles that has a recommended tire pressure Thats what you should run, or at the very least a starting point, those recommendations are based on tire size and weight of the vechicle. Not saying it can't be tweeked a little but an additional 50% psi over vechicle recommendation is just crazy, and a recipe for disaster.
There is a sticker from the manufacturer on most vechicles that has a recommended tire pressure Thats what you should run, or at the very least a starting point, those recommendations are based on tire size and weight of the vechicle. Not saying it can't be tweeked a little but an additional 50% psi over vechicle recommendation is just crazy, and a recipe for disaster.
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From: South Western Ontario
Start with the door sticker pressure and tweak from there.For example, I run a little lower because I have wider and lower profile tires compared to stock. I wore the previous PS2's completely flat and got a LOT of miles out of them so tweaking the pressure to match the tires has worked well for me.
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Melting Slicks
Joined: May 2001
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From: Gilbert Arid zona
My 1/2 TON truck specs say 39 PSI and the 02 Z is 30 PSI. The 3/4 ton Ford was 45 PSI. Guess if your going to haul 800 lbs. of sand in the trunk I'd pump em up a bit. In all my years I've never seen a factory spec over 32 psi on a car.
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My 2015 Impala has a tire pressure recommendation of 33 psi and I've had several other cars that recommend that or higher tire pressures.
That said, I'd be curious what tires the OP has that says to run a minimum of 40 psi in them.
That said, I'd be curious what tires the OP has that says to run a minimum of 40 psi in them.
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From: Virginia
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...might be some new age tires...maybe space shuttle tires?
Racer
Joined: Mar 2017
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From: Northern California
If you look at tire pressure recommendations the tire manufacturer always states that you should check with the vehicle manufacturer for recommended tire pressures. This is because tire pressure requirements are based on vehicle weight. So your statement that the tire manufacturer requires 40psi makes no sense. This is contradictory.
Melting Slicks
Joined: May 2001
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From: Gilbert Arid zona
If you look at tire pressure recommendations the tire manufacturer always states that you should check with the vehicle manufacturer for recommended tire pressures. This is because tire pressure requirements are based on vehicle weight. So your statement that the tire manufacturer requires 40psi makes no sense. This is contradictory.
Melting Slicks
Joined: Mar 2004
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From: Horseshoe Bend ID
Maybe the OP is worried about hydroplaning. The minimum speed for hydroplaning (in knots) is nine times the square root of the tire pressure (in PSI) so a 30 PSI tire will hydroplane at 49 knots (56 mph), but his minimum req'd 45 PSI tires hydroplane at 60 knots (69 mph)
Just my thoughts...
Just my thoughts...