Some of us want to know what things weigh. Be it for performance or fuel economy or just general geekiness, we want to know!
That's what this thread is for. If a moderator wants to try to keep it organized and maybe maintain a list in the first post, I won't complain. I'm not likely to do so myself, however.
Loose rules: +/- half a pound is fine for most things. If it's something that weight matters a lot on (like wheels), +/- a tenth pound is preferred. And if it's something that weighs less than say 8-10 pounds, a tenth is preferred. Most digital bathroom scales are either .5 or .1 accuracy. For better than that, you need a postal scale or a kitchen scale. (just don't tell my wife that I weigh car parts on her kitchen scale)
In no particular order, here are some things that I've weighed:
Body / Exterior:
The whole car: 2057# (this is a 2015 Mirage DE 5-speed, and this is with an added rear swaybar and coilover kit... so, +/- 20 pounds?)
Corner weights: (taken with the weight above) Front: 573/648, Rear: 362/474
Rear Wiper Assembly: 1.7#
Hood: 20.5 pounds including the insulation and washer hoses and jets
Suspension:
Front Swaybar: 5.9#
Front Swaybar End Links & Brackets: 1.5#
Brake
2015 Front Rotor - 7.55 pounds - 229mm (9") OD
2015 Caliper Bracket - 1.22 pounds
2017 Front Rotor - 9.12 pounds - 251mm (9.9" OD)
2017 Caliper Bracket - 1.45 pounds
Brake Pads, one wheel (barely worn at 20k miles) - 0.91 pounds
Brake Caliper - 4.38 pounds
Caliper Pins - 0.26 pounds
Brake Hose - 0.35 pounds
Interior
Shift Knob: 120g
Rear Seat Headrests: 1.1 pounds each
Floor Mats (set): 4 pounds
Jack: 3.3 pounds
Tool Kit: 2.8 pounds
Spare Tire: 19.1 pounds
Left Headrest: 1.1 pounds
Right Headrest: 1.1 pounds
Left Seat Back (includes center seatbelt reel and brackets): 13.7 pounds
Right Seat Back (includes brackets): 11.2 pounds
Seat Back Bottom Bolts (6): 0.4 pounds
Seat Back Latching Posts (with 6 bolts): 1.0 pounds
Left Seatbelt Reel (with 3 bolts): 2.2 pounds
Right Seatbelt Reel (with 3 bolts): 2.2 pounds
Seatbelt Buckles (3, with 3 bolts): 1.3 pounds
Spare Tire Cover & Carpet: 3.2 pounds
Cargo Cover: 1.4 pounds
Engine / Drivetrain
Battery: 34# (this is a Toyota replacement battery, OE Mitsu may be slightly different)
Transmission (including upper trans mount and bracket): 73#
Engine (all accessories removed, no manifolds, fuel rail or coil packs): 112#
Intake Manifold & Fuel Rail: 7#
AC Compressor: 9#
Alternator: 10.5#
Flywheel: 15.1#
Pressure Plate: 6.0#
Clutch Disk: 1.6#
Crankshaft Pulley/Damper: 2.8#
Exhaust Manifold Assy w/ Pre-Cat = 9.9 lbs
Exhaust from Pre-Cat Back (including 2nd Cat) = 18.5 lbs
SuperCircuit Header = 5.5 lbs
Battery Tray: 2.8 pounds (shelf, plastic tray and tie-down)
Stock wheels/tires: 25.4 pounds
Stock 165/65-15 Enasave Tire: 13 pounds (from Tire Rack)