I own a E46 M3. 70k miles. I can get a 2002 M5 with 49k miles. what do you suggest? please give supporting details and pros and cons on what car I should choose.
2003 M3 $29,000
2002 M5 $30,000 less miles

ok buddy.
here is the change.
ur new car is going to ALOT more fun to drive. it has aalot more horse (almost 400) and alota torque./ and u will experience lower fuel efficiency. but if u ask me, its a good deal. one thing i can prmise u is that ur new ride is gonna be FUN!!!.
BUT<<< after all these, the car will have about the same acceleraction and max speed due to weight defference. (but ur new car will have alot more torque along with better suspension, making it fun to drive)
and i would go with the one with less miles.

P.S.
what a hard thing to decide.
these 2 cars are pretty much the same.
go for M5 though, thats my opinion

Yea bro, I would stick with the M3. Its my dream car and their both going to be about the same performance bc the M5 is heavier and a sedan. You and I both know that the M3 kicks ass no matter where it goes. Hope that helps