Tire Pressure?? (1 Viewer)

[barrypt5]

For me I have always questioned tire pressure. When I was younger I was very worried that my tires had the right amount of air in them and checked far to often, well ended up ruining two of the four and ever since always wondered what the heck to do. The part that always bothers me is the “bulge” of the sidewall. Other cars in the parking lot do not have this “bulge” why do I? So now having my Landcruiser I want to make sure and keep a close eye on where I am at.

Well I guess my question is: on the inside of the drivers side door they have a pressure rating for the stock size 275/70 R16 of 32 psi, the tires I have are a different size P265/70 R16, from the PO, and on the sidewall it says 35 psi when cold.

-So what is cold, if your truck has been sitting in the 80° heat all day you can’t check the pressure then right?

-If you drive one mile through the city to get air are your tires still cold?

-What if I am at 35 psi and the “bulge” is still visible?

-Am I making this to complicated?

-Any Tips?

BTW on http://www.esuvee.com/flash.html did you know it says never to use a tire bigger than the mfg’s says?!?!?! Crazy!!

Thank you in advance

Barrypt5

 

[Hltoppr]

"Cold" means first thing in the morning, prior to driving.

Following the sidewall pressures is generally the way to go. Different tires will have different pressures. You will also have to take into account the load in your rig and the terrain you'll be in.

For instance, I run 31x10.5R15 BFG Mud Terrains. My daily pressure is about 35psi, loaded on road I go to 38-40psi, and off road (dirt roads) I run about 25-28 psi, depending on load. Beaches and sand start at 15-18 psi.

Of course, I air up when going from beach/sand to dirt road and then to pavement. A good quality air compressor saves the day!

-H-

 

[jcolegrove]

hi,

i must interject that the sidewall pressures are NOT the guideline. if you look, you will see that generally state a MAXIMUM pressure for that tire. this is NOT the intended running pressure. this question is asked a lot of times in a lot of places including R&T, lately. after much discussion of pros/cons, it is almost always determined that the manufacturers recommended cold pressure (first thing in morning, or driven less than a couple miles) is the best for MOST driving.

a lot of cars/trucks will state to increase for sustained high speed running, or towing, etc... again this is the mfr recommendations.

now, with that said, many of us are not typical drivers. i.e. i know i corner faster, harder and start quicker with my cars, etc. and i'm willing to give up some ride comfort for fuel econ. so i run and always have run, about 2-4 psi cold than recommended.

i've never had any 'crowning' or wear at the center as a result and i get maybe 1-2 mpg better, with better handling.

of course- wheeling, etc. is completely different, too.

hope this helps.

 

[jcolegrove]

ARGGHHH-- forgot.

re: the bulge-- this is normal, typical, and will vary from tire to tire, model to model, etc. with all radial tires. this 'bulge' makes it look like the tire is low, when in fact, it is not. the bulge or lack thereof of other cars will vary, but look around-- i think you'll find most cars do have it. forget the bulge-- go with pressure.

JC

 

[landtoy80]

<<< the bulge-- this is normal, typical... forget the bulge>>>

I have a bulge... Does that mean I am not fat? I am just a radial?