Somehow, I eked out eighteen months of use from my Stumpjumper’s SRAM BB, but it was basically filled with rusty sand when I finally replaced it. I replaced the SRAM cranks and BB on my new Norco Sight within six weeks of purchase, swapping to an XTR BB which hasn’t missed a beat and only cost me seventeen quid.
My Stumpjumper’s new Praxis BB seems to have developed a grumble on the drive side after only a couple of months of use, but I’m putting that down to a wonky bearing. Worst case scenario, I drift out the old bearing and press in a replacement.
If your bike comes with a SRAM BB, then budget on replacement within six months regardless of whether it’s press fit or otherwise.