Hello, I'm not sure if this is the right section to post this, but my car is a 1998 honda civic lx and I have Falken Ziez ZE tires so the max psi is 51 as it says on the side. Is it ok to put my psi up to 51? I have tried it once and noticed that I gained better mpg while running it at 50 psi, but I'm not sure if it's recommended to do so I've seen some threads on google saying that you shouldn't but I'm not entirely sure. Anyone know if I can run max?

 

your tread wear wont be even

 

Ah i see do you know the recommended tire psi for these tires?

 

What's stamped on the tires is what the tires can handle max.
Each car has its own tire pressure configuration, which is typically stamped on the driver's side door jam.
I too tend to run tires at higher pressure to get better mileage.

I don't remember exactly what my '93 Civic EH2 requires pressure wise, but I usually run the tires at around 35-36 psi (depending on weather/temperature) and go as high as 38-39psi for roadtrips.

Your mileage may vary (literally).

 

Oh wow that is lower thank I'd like to run, it's better for the car that way?

 

I've read that the tire valve stems are the weak link and are only safe to around 38 PSI. Otherwise, you run the risk of a blow out.

 

As you inflate the tire more, the inner part will be pushed farther down. Over inflating will wear the inner part part of the tire before the outter part. Also, you will not have as much traction. Under inflating will do the opposite and wear out the outter parts.

Since different brands use different numbers of plys, different durometer rubbers, etc, different years/engines weigh different amounts, this seems like a valid question. Also, switching from 13 inch tires from the factory on some models to 15, 16, 17 inch tires, it seems like pressure should change somehow.

 

Its simple... your car dictates the tire pressure, not the tires. Check your driver's side door jam for proper tire pressures.