Well, heres what happened, I was at a friends house and left my gagt outside overnight , some fucker slashed my right rear tire. Im wondering if i have to buy both rear tires now , or wether i can get away with buying one new one.

My tread depth is about 3/32nds less than brand new tires,

Thanks ,

one will suffice.
a matching one is preferred, as a mis-matched tread will slightly "drag" and/or possibly make a different road noise, but being on the rear of the vehicle (since it is front wheel drive/steer/ and brake) it is not TOO critical.
if you decide to shop for a decent set (pair) of new or used, save your rear good tire, as it may come in handy swapping out one of the matching fronts down the road...

Fukin vandals! people who do these things are about as low as a human could go. its not like your car can defend it's self. But replacing the one is better than replaceing all four. It should work fine with the one replacment. I had 12k mls on a set and one developed a sidewall defect,large bubble, and that wasnt good. really eat up the other three rather quick. they were Good year RS's they sucked in the rain/snow but were great for burn outs on dry land. I now use Good year Assurance, they're great all around wet/dry & snow. an 80,000 mile tire for around 180$ each.thats for a big 225/50r 16".

One will be ok, but you really should get two. Try to at least match it.

Oh i plan to get a brand new tire matching the ones on my car im just trying to decide wether or not to do both rear tires , so that the tread depth is even on either side on the rear......

I have 3 Bfgoodrich Radial T/A's right now.... and one jackstand as its sitting in my garage ......

Fucking punks