Amathuluzi wePCR noma amathuluzi wePassenger Car Radial yehlukile ngokuthi zibonakalisiwe ngaphandle kunye nezinye izindlela ezifanayo kumncedisi wemitha. Izithuluzi zezikhona zihlukile ngokuthi zizama ukufinyelela umsebenzi, okunqotho nokuhlola ngokupheleleyo. Okungakho, ukuze ubone, amathuluzi asePCR azikwazi ukuba zidingekile ngoba zinethetho elinganayo lomthetho olungaphambili. Kodwa, bese ubone amathuluzi asePCR, zikhona ngezindawo ezimbili ezincinci nezilimi lethuluzi eliphakamisekileyo lokugcina ukusuka nokufika kakhulu futhi kanye nokuhlola ngokupheleleyo ngazo zonke izinkinga zokuhamba, phambi komhlaba, ngaphandle komhlaba noma emfulweni. Lento kungabangela ukuthi ungayihamba ngeamathuluzi asePCR kwiqhobo lwezintsha ezindala ezilandelayo noma emfulweni - ngokusenzelwa ngokuthi inqanawa yokugcina nokuhlola ngokupheleleyo ifanele kakhulu. Ngokuqondile, abasebenzisi bazame ukuba babuyeke kuhluke nokuba babhalele kuwo PCR thuluzi, uzokusetyenziswa kakhulu kanye nokuhlola kakhulu.