[Wheelman_13]

Yay for commentary:

Originally Posted by dirocyn

The biggest weight savings if you want to keep a streetable car is probably the wheels, I bet you save over 50 lbs right there and it's unsprung rotational weight.

Stock MR2 wheels are really rather light, particularly the early year 14s. (like ~15/16 lbs). The lightest substitutes I have seen weigh 9/10 lbs for same widths for the 14" wheels. So really only dropping a total of 20 lbs. However, as dirocyn points out, that is unsprung weight and weight that directly impacts the drivetrain, so it definately will make a positive difference in performance.

If you get run-flats you can lose the spare and jack.

The problem is that the run-flats themselves weigh significantly more than a normal tire. Just chuck the spare/jack/etc. and keep your AAA up to date. I shelved mine in the garage long ago, and I just take a real jack and usually a complete set of race tires when I am at the track/autocross.

The next place to look is the muffler--the stock muffler is heavy. And the AC, of course. Replace power windows with manual cranks (they work better anyway).

True, but easier to replace the whole door vs. just window hardware if you can find a parts car.

If you can apply Rain-X every month you can live without wipers & motors.

Not advisable or legal in some areas, check your local laws. Rain-X can only do so much. This is prolly a So-Cal/AZ/TX thing.

...I'm sure you could also make a lighter-weight engine cover, hood, and trunk lid--and possibly save another 100 lbs.

Yeah, the hatches are all way overbuilt. Great if you like to set your groceries, tools, girlfriend, etc. on them. Not-so-great for weight savings.

...Get the cross-drilled brake rotors, those are lighter.

Not enough-lighter IMO to offset the tendency to crack. Slotted will do just fine. If you are really talking about weight savings, find an adapter to fit some Porsche "PCCB" rotors on there. You'll need at least an 18" wheel though, the stock 14"s won't quite get it done: