Originally Posted by
genejockey
So, in one post you say you've pinchflatted 25s even at your ungodly high inflation pressures, and then you say you ride 23s just fine. Choose an opinion and stick with it.
As for why wider tires for heavier riders, because they compress less at the same pressure, so you don't have to pump them rock hard to avoid pinchflatting.
I pinchflatted 25s because they were underinflated for the type of riding I was doing (hauling groceries.) I needed 130+ in them, and frankly in terms of historical tire pressures this isn't even abnormally high. Back in the day much lighter people went to higher pressures. Thin tires for heavy riders are perfectly fine as long as they are inflated properly