Actually another question - my rear tyres have plenty of tread.
Situation normal for most front wheel drive cars. I bet they would still have pleanty on them at 60k miles if you never rotated them!
I havent measured them yet, but my front driver side tyre seems low, while the passenger side seems fine yet.
What, tread depth? If so, that simply means that just one tyre has been replaced (prolly due to a puncture). Look carefully at the markings on the sidewall for the date code - sommat like "3006" - which would mean that it was manufactured during the 30th week of 2006. Both tyres on an axle
should ideally have the same date code (meaning they both came from the same batch). I bet yours are quite different.
What do you guys do in this scenario - replace both the front???
Im thinking of replacing both the front as soon as the driver side is at 2mm, but what to do with the spare replaced tyre that still has good tread?
2mm is a very wise decision (2½mm is better on wide boots though) - so how much meat will the other tyre have? Replace both, and maybe ask to keep the decent part worn in your garage, then if you whack a kerb or get a puncture, at least you have a spare tyre to fit.