[PJohnno]

I just replaced the two front tyres with new ones.
The fronts had worn down way more than the rears.

I left the rears because they still have some tread and I wasn't planning any major off road trips until late Jan 2019.
There was also some money/cost considerations with getting all the tyres replaced.
I was hoping the rears could last until the new year, when I intend to replace them before my trip.

I was talking to a friend who is a mechanic, and he said that tyres on AWD drive cars should ALL be replaced at the same time.

He said that having new fronts & worn rears means that the wheels are rotating at different speeds all the time.
This puts more stress on the transmission and can result in premature wearing of diffs etc.

Anyone here got any opinion, or experience, with this?