It depends on what vehicle the tire is mounted on. The correct PSI is listed in your owners manual and may also be written on the drivers door post.
35psi
I have a 1991 and my tire size is 225/75/R15.
Almost certainly! A 235/75 R15 tire is only 10mm wider than a 225/75 R15 tire and 10mm is less that 4/10ths of an inch. The only problem you could run into is if the R15 rim you're using is already too wide or too narrow for the tire which you have on it, but if the 225 tire is using the recommended rim, the 235 tire is permitted under current standards. .
i believe nothing.
Yes, that is a reasonable change.
225/60/R15
225 70 R15
Check the blackwall-it may be there. The tire pressure marked on the tire is the maximum pressure recommended by the tire manufacturer for that tire. That tire on your vehicle may use less psi for the best performance.
read the side of youre tires dude
225/45/R15 are the lowest.
I use 35psi for street.
P195/65-r15