Originally Posted by MteK
I think you should replace tires in sets when possible, especially if you are going with a different tire. I personally wouldn't take my chances with a bulge. If something happens and you screw your car up or get hurt you'll be kicking yourself for being cheap and trying to save a few $$.
Yes, i ordered some Potenza S-04 front & rears but 225 / 255 configuration.
However, these will take about a month before they arrive.
So in the meantime as the bulge has not gotten worst, i will just take it easy driving these (100 kmh tops) and not take corners too fast.
Hope the bulge will hold until the new tires arrives.