hello guys.

My car is a 2007 G35 sedan sport, and had the brake pads changed out last summer and it's been good. I started to notice recently that when I hit the brakes it stops but the pedal sort of sink lower than before, and if I let off and pump it again, it feels solid.
I tried bleeding all four corner and changed new fluid to ATE dot4 just to make sure there wasn't air in the lines. it still feels the same.
So someone suggested I swap out to stainless steel brake lines which might solve my soft pedal feel.

Would stainless steel brake lines be a good mod for our G35 or a waste of money? Also where can I order some besides ebay and amazon, could you guys give me some recommendations.

TIA

 

Sounds like the master cylinder is possibly leaking a little internally or you have an issue in one of your calipers that doesn't allow it to clamp fully until you add pressure by pumping. You'd only notice the rubber lines flexing in repeated (high temperature) or extremely hard (foot to the firewall) braking when the system is at maximum pressure.

 

It's not necessary for daily driving. Could have a slight bleeder leak too. Some Teflon tape on mine fixed my air in the system issue.