Questionwhat pressure should the front and back tires be for a 2005 nissan altima? The info that you usually find about this just inside the car door isn't there.
AnswerSandra,
Below the line is my standard answer and I'm posting it for completeness. But I suspect your placard is not on the door - and as I indicated below, it might be in the glovebox, the trunk or on the fuel filler lid. Please check there because that is right many, many more times than my book is - and the problem is that there were 3 different versions of Nissan Altima:
2.5 / 2.5 S / 2.5 SL = P215/60R16 at 29 front / 29 rear
3.5 SE = P215/55R17 at 33 front / 30 rear
SE-R = P245/45R18 at 32 front / 32 rear
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On every vehicle sold in the US, there is a sticker – commonly called the tire placard - that lists the original tire size and the proper pressure for that size. The placard is usually located on a doorpost or in the glove box – but sometimes it is located in the trunk or on the fuel filler door.
Personally, I like a car that handles crisply. So I use 3 to 5 psi above the placard pressure. I also get better fuel economy, better wet traction, better snow traction, better tire durability, better tire wear, but I do have a degradation in ride harshness (but I am willing to put up with it.)
BTW, it doesn't matter who makes the tire or what pressure is listed on the tire's sidewall, if the tire size is the same as the placard, then the pressure listed on placard is also appropriate.
One word of caution: Some trucks use tires with the letters "LT" in front of the tire size - and some trucks use tires with the letter "P" in front of the tire size - and some trucks use tires with the letter "C" after the tire size. You should not use "P"'s in place of "LT"'s and vice versa.
You should be sure the pressure on the sidewall equals or exceeds that pressure on the placard. If you do this the issue about the letter "C" in the sidewall will take care of itself (which is not true with "LT"'s vs "P"'s.)
If you are using a tire size that is different than what is listed on the placard, then the pressure has to be recalculated. The calculation is not difficult, but it requires tire load tables which are not allowed to be published in the Internet because of copywrite laws. However, I have a copy and would be glad to do the calculation, but the starting point is the vehicle placard: Tire size and inflation pressure. I will also need to know the new tire size.
