pretty badly4 or 2 tires???

[Nismo_Dj]

well i need rear tires pretty badly. my fronts look like they have about 80%+ on them. i know they dont wear out as fast, but i was wondering if i can just buy 2 rear tires and be all set. take in account i dont go to the track nor do i attempt to drft my car just plain driving with occasional street races. or do i need to upgrade all 4? pros and cons? thnx

[rb20det_pwr]

Back two you should be good to go..Its one tire that you dont want to buy all by itself..I wait till they start showing wire but then again im poor..