Well i have a 99' Mustang v6 with stock rims. (For those who are going to say, stop waisting your money on a v6 and get a Gt, stfu plz cause im 18 and dont have enough $$ for that and helped payed for my car so keep it to yourself thanks.)
Anyways, I'm looking to get Anthracite FR500 Rims with Sumitomo All Season H + R tires (245/40 - 18). From AmericanMuscle.com




Would i just need the tires mounted on the rims, then throw in some lug nuts?

Also does anyone know if theres anywhere cheaper online that i can purchase these same set of rims? Would i need to modify anything else on my car to do this? (breaks?)

Thanks everyone!