years ago when fronts were $18+ and rears were $20+ (standard foam yellow,green,& blue compounds) one could save alot of money by saving rims and buying donuts. donuts were cheap compared to the overall price of pretrued/mounted tires. due to more competition prices have come down, but not on just donuts
when you look at stormerhobbies site and see JACO purple, grey, white donuts for 9.99 and pinks for 11.99. then do to kthobbies, they sell JACO mounted/trued tires in the same compounds front or rear...for 12.99! why bother.