Got on 03' with 235/35/19 front & 275/30/19 rear. Does anyone know how much p.s.i. I should be running in each set? Discount tire told me to go by the sticker in the crack of the door. That we be easy enough, but is no sticker.

 

The sticker is inside the console lid. But you don't have stock tires, so the pressure goes out the window (I think!!). I think the max pressur eof my stockers is 50lbs. But nissan says the cold temp should be 40ish (can't remember). So the hot temp at 40 is like 46 in the Winter and 48 in the Summer. Just for an idea of what you're looking for.

 

i set mine at 38 all around......but 40 should be OK

 

Cold Weather: 35-40psi
Hot Weather: 30-35psi

Remember cold weather reduces your psi (approx. -3~8psi) & hot increases it (approx. +3-8psi) depending on the actual temperature outside so it can vary from place to place (This is prior to actually driving the car. Driving it will increase your psi even more & the rate will depend on type of driving, driving weather, & length of driving).

 

Mine are 36-38 all the way around after being warmed up according to the computer.

Came like this from the factory.

 

You guys are talking about cold-tire pressure right? As in before you have driven ~3 mi?

Mine are set to about 34-35psi cold tire pressure. They go up to 38 when warm from driving. I am probably robbing myself of gas money.

 

Manual says 35 PSI front and back when tires are cold.

 

depends on the tires and weight of vehicle.
some tire manufacturers have the info on their sites, most don't however.

 

35 front 30 rear for me.

 

For stock tires, you'll have the vehicle manufacturer's recommendation and then you'll have the pressure on the side of the tire itself. The mid way point between the 2 should give you the best of all worlds.

 

While this might be true for stock tires, what about aftermarket tires that have a totally different size, diameter, load capacity, & sidewall rating?

 

I got some aftermarket tires on the old maxima... they were rated to 50psi max. Higher than any other tire I'd ever had.

Recommended pressure for that car was 33psi, and one time I set it to like 42psi "just because I could." The traction wasn't bad (pretty sticky tires) but when I took the car in for service the guy almost flipped out.

 

Why did he flipp out? Did the tires have uneven wear or was he amazed by how much tire pressure the tire could handle?

 

I'm not sure, he just said it's way too high. I wonder... even if the max pressure is very high, maybe it's still more likely to get a blowout if the pressure is too high.