Dylanjunk

i have Nexen n3000 that came with my rims on my car at the moment,and the tire says max pressure 50psi but i doubt i should put that much air in it, so how much air should i put in

Jazzer The Cat

Generally, a tire will pick up 5~8 PSI going from cold to hot. Much depends on the actual size of the tire, so what is it? Please give ALL three numbers

Jazzer

Stoenr

It's a size 18

What not good enough for ya Jaz? lol

Jazzer The Cat

Lower profile tires will generally need more air pressure so profile would be nice

Dylanjunk

its an offset pair, front are 245/40/zr18 back are 265/35/zr18 , its on a v6 mustang if that makes any difference.

Jazzer The Cat

Yes.. the lower profile tires are going to require a bit more pressure than a higher profile one. My recommendation would be to start with maybe 36 PSI and see how they feel. Make sure the pressure is set when the tires are COLD and car has been parked, like over night. Drive it around for an hour or so and put on a bunch of highway miles. Take a pressure reading after this drive and see where they are.

Jazzer

Dylanjunk

Usually if I let them sit they will average out to 37ish about a month and just stay there... I don't really notice a difference of 37 vs 45

Jazzer The Cat

Really?

That is quite a differential and would expect you to have a much different steering response between the two pressures. If you don't, that is OK, just aren't pushing the car very hard in the corners, I would presume.

Jazzer

Dylanjunk

yeah i dont push it too much on the corners mostly because im in the city driving usually, but after i get my tuner then im probably gunna have some fun up north of my house