Selling Coupe to get Sedan?
Except with the seats... may be some disappointment in that area... good news you can always swap coupe seats in
Joined: Mar 2010
Posts: 488
Likes: 0
From: Portland, OR
+1
i still have a few threads left in the front and i'm already around 3'' drop in the front and then the rear will tuck my 18'' rims still sitting on a low pro jack.. did that on accident when i first got them..
i still have a few threads left in the front and i'm already around 3'' drop in the front and then the rear will tuck my 18'' rims still sitting on a low pro jack.. did that on accident when i first got them..
It mostly has to do with the fact that the door is bigger, for 2 reasons. First, the door itself is alot heavier than a Sedan front door, not just because it's bigger, but it has to be stronger to provide the same side impact protection. And because the B pillar is farther back, and is only a half pillar (floor pan to window), more support has to be built into that pillar and the roof to maintain the same structural integrity and rollover protection. Basically, 2 doors plus a centrally located B pillar plus a "normal" roof weigh less than 1 big door plus the extra body panels where the rear door was plus the beefier "half" B pillar and reenforced roof.
It's also likely that extra metal is used on the outer shell on a Coupe because the Sedan has some built in lateral support with the back seat frame. It's probably easier to design the rear crumple zone on a Sedan because of that. Adding a fold-down rear seat to the Sedan would probably increase it's weight a little bit.
I know all of this sounds like a lot of weight would be added, but it's only about 60 pounds.
These same issues are why convertibles are usually quite a bit heavier than their coupe and sedan counterparts. Without the roof providing a significant amount of structural integrity for very little weight, a convertible has to make up for it with reenforcements throughout the rest of the passenger compartment.
It's also likely that extra metal is used on the outer shell on a Coupe because the Sedan has some built in lateral support with the back seat frame. It's probably easier to design the rear crumple zone on a Sedan because of that. Adding a fold-down rear seat to the Sedan would probably increase it's weight a little bit.
I know all of this sounds like a lot of weight would be added, but it's only about 60 pounds.
These same issues are why convertibles are usually quite a bit heavier than their coupe and sedan counterparts. Without the roof providing a significant amount of structural integrity for very little weight, a convertible has to make up for it with reenforcements throughout the rest of the passenger compartment.
No, you're exactly right. There is significantly more chassis reinforcement in the door area so the car can meet side impact standards. The sedan has a center pillar between the doors so it's easier to meet the standard without excessive engineering of the door openings. The sedan is about 60 to 70lbs lighter.




