Where you put your hands on the bar changes your whole bench press. Grip width decides how far the bar travels, which muscles do the most work, and where your lift is strongest. Most lifters never think about it and just grab the bar wherever feels normal. Dialing in your grip can add pounds and save your shoulders.
Wide Versus Narrow
A wider grip shortens the distance the bar has to travel and leans more on your chest and shoulders. A narrower grip lengthens the range and puts more of the work on your triceps. Neither is right or wrong. The best grip is the one that lets you press the most weight safely while playing to your strengths.
If you are strong in the chest and shoulders, a slightly wider grip may suit you. If your triceps are your engine, bringing the hands in can help. In competition, most federations cap how wide you can go using the rings on the bar, so know your rules and find your strongest legal width.
Protect Your Shoulders
An extremely wide grip can let you move big weight, but it puts the shoulder in a vulnerable spot at the bottom. If your shoulders ache after benching, pulling your grip in a little often calms it down while keeping you strong. The strongest grip is no good if it leaves you injured and unable to train.
Find Yours and Make It Consistent
Test a few grip widths over a training block and pay attention to what feels strong and stays healthy. Once you find it, mark it by where your fingers sit on the bar markings and use the exact same grip every session. Consistency in your grip means consistency in your bar path, and a repeatable bar path is what builds a reliable bench.
Your grip is a setting you get to choose. Pick the one that is strongest and healthiest for you, lock it in, and press from the same spot every time.