Hole In Tire Sidewall

ok

there is no center diff in pt 4wd

open diffs in front and open diffs in back don't matter, it is the
front prop shaft vs rear prop shaft

if front tires are different diameter than the rears with part time 4wd
you always are in a tire-scrubbing scenario...and all that fightin energy is focused in
the transfer case

if tires are equal then you only go in scrubbing mode when turning front wheels or in any type of turn

offroad less worry about vehicle wear and driveline wear, but more worry about slipping off the road
as one or the other sets of wheels is always slipping more than if diameters was equal

on pavement the tires will slip but they will fight that slip and the transfer case has to eat it somehow


so, if you have 10,000 miles on one set of tires and zero on the other, you get slight problem
if you have 20,000...more problem

if you have all 4 same mileage and rotate them every 5000 miles, practically no problem

people say well don't drive in 4wd on pavement. yes of course, but anyone who knows anything about 4wd in
winter knows the road is often clear in some patches and it is inevitable you will do some type of dry road action in 4wd.

I am just sayin...if someone is asking 'should I replace all 4?" well fuck yes obviously the truck will
function better in all regards 2wd or 4wd on road or off road traction will be consistent with the same
age and same mileage meats installed.

if you have AWD it matters a ton less. if you stay in 2wd it matters a ton less. it's all percentages..


the end result is the more the front is different than the back as far as equivalent gear ratios,the more issues that can happen

increased wear and decreased traction is what happens