i have a 2000 ranger xlt,3 ltr-v6. rear wheel drive and front coil springs. i have contacted several auto parts stores looking for new front brake rotors and asked what the diameter of the rotor was that fits my truck. so far i have been told 4 different sizes of diameter. is this common ? i never had such a hassle buying other parts for my truck that fit. i can save a good chunk of change by using rock auto over my local parts stores but again there is 3 sizes listed. thanks for any input.

 

Way I'd do it is get under there with a tape measure. Either from the back or might need to remove the wheel for better access. That's the most sure shot way to know.