tire psi on ms3

dread

Member
I justed checked the tire pressure on my ms3 with a digital gage and it was 51 psi. The max for the tire is 50, so I was wondering what tire pressure peoples speed3's came with. I think I might take it down to 45 psi.
 
WOW, how did you get it that high??? Take it down immediately or your tires are gonna blow...

Look on your door jamb, the correct recommended pressure is written there. I'm not sure what it is for the MS3 as I do not have one but I would put it at that pressure if you're not sure.

The trend seems to be putting it a few PSI higher but really you should just be adjusting it every week to make it float around the recommended pressure (the manufacturers put it there for a reason).
 
The manual recommends 34psi front and 32psi rear. You are waaaaaay to high there, too easy to damage the tires at that pressure. Plus you'll get uneven wear.
 
51 psi! YEOW Thats HIGH!

I would keep them between 32-34 cold psi for best combo of comfort / perform.

This should be a wake up call to all to check those tire pressures.

Todays size tires are not as evident that they are low on air pressure, you can think they are fine by looking at 'em, but check the pressure and you might be suprised, it has happened to me many times.

Tire pressure is very important, and incorrect pressure will cause adverse effects on tire wear, ride comfort, tire temperature, handling performance, traction, not to mention big effect on MPG.
 
that is how it came from the dealer, I thought it was very high and wanted to know if anyone else had the rating. The ride is very rough, I am definately going to take it down.
 
dread said:
that is how it came from the dealer, I thought it was very high and wanted to know if anyone else had the rating. The ride is very rough, I am definately going to take it down.

Sometimes when you get a new car, you also get a copy of the PDI or Pre delivery inspection. I would love to see if the tech checked the tire pressure checkbox on the PDI form. Then, if so, I would want to recheck all of the other items on the list that were supposed to be "checked".

This upsets me because it is such a simple basic item for the dealer to check, and is really a fairly important component of the car. Pressures as high as you reported are serious enough to cause a blowout. A blowout at any speed can cause a loss of control.
 
mazdadude said:
... A blowout at any speed can cause a loss of control.

and then serious injury/death...

I dunno what that dealer is doing. You should go yell at them. I hate dealerships, today would have been the last day I'd ever go back to my dealership but I have to suffer through my first free oilchange. After that, they won't touch my car again...

I was thinking that maybe the dealer did put the right PSI in and the weather may have changed since (where do you live?). But that doesn't make sense b/c even if you live somewhere hot, it shouldn't go up that much (17-19 PSI over recommended!)

Read the other tire pressure thread on tips to maintaining the correct pressure.
 
Olestra said:
and then serious injury/death...

I dunno what that dealer is doing. You should go yell at them. I hate dealerships, today would have been the last day I'd ever go back to my dealership but I have to suffer through my first free oilchange. After that, they won't touch my car again...

I was thinking that maybe the dealer did put the right PSI in and the weather may have changed since (where do you live?). But that doesn't make sense b/c even if you live somewhere hot, it shouldn't go up that much (17-19 PSI over recommended!)

Read the other tire pressure thread on tips to maintaining the correct pressure.


If he measured the air pressure after a long or hard drive, it can be a few PSI higher than when measured "cold" because the air heats up and expands as you drive. But even taking that into consideration, it's still way too high.
 
The car hadn't been driven in a day when it was measured, I live in jersey and the temp is 50-60 degrees, I lowered the pressure to 34psi in the front and 33 in the rear. A lot of air came out to get it to that pressure. I was also thinking this should have been checked pre-delivery and I am definately going to let them know I am pissed. My other mazda dealer left my lugs untightened after a tire rotation and my wheels almost fell off the car on a major highway going 70 mph. Needless to say they refunded my money. I was hoping this dealer would be more careful.
 
dread said:
The car hadn't been driven in a day when it was measured, I live in jersey and the temp is 50-60 degrees, I lowered the pressure to 34psi in the front and 33 in the rear. A lot of air came out to get it to that pressure. I was also thinking this should have been checked pre-delivery and I am definately going to let them know I am pissed. My other mazda dealer left my lugs untightened after a tire rotation and my wheels almost fell off the car on a major highway going 70 mph. Needless to say they refunded my money. I was hoping this dealer would be more careful.

Once again My own personal theory is true, THEY JUST WANT OUR MONEY!!!!!!!!!


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while 50 psi is certainly high, I don't think he's running the risk of a blow out. He'd only run that risk if the tire was loaded to its maximum allowable weight. It's not making his car handle better nor is it allowing the tire to wear properly, that's for sure.

and FWIW, I'd be pissed too. Such a simple thing to check.
 
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a tire with high air pressure (excessively , like that) can't flex nearly as much as a normal one, which can result in 1. Damage to rim from a seemingly harmless bump or pothole, 2. damage from road hazard more likely, just like a balloon is easier to pop when its fully inflated, so also is a tire, and 3. severe wear in the centerline of the tire.

Of course, slight overinflation is far, far better then under-inflation. Also, it should be noted that you'll probably get just a little less MPG then you did when they were at 51psi.
 
fourthmeal said:
werd...my mileage sucks too. The problem is pressure, but not tire...more like turbo.

I've found that my foot pressure is the culprit to that issue.(first)
 
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