It is easier to spin the tire that's going to bind in a turn with 31's, it would be a slow process even with larger tires but it always seems to get you in the worst possible situation. I/my daughter put a lot of miles on my truck with a welded diff and never had an issue, again it is how you drive it. Coast around corners just like if you had a Detroit and the tires will slightly scuff around the corner, stab the gas around the corner and that's where you'd put a load on the axles even though they will chirp. Think about it and you'll get it, coast around and the tire will naturally slide, but stab the gas and chirp, chirp, chirp happens which is loading and unloading the stress on the axle.
