Would 18's look too small on the sedan?
 

Hey guys. I'm pretty set on purchasing some TE37's for my sedan, just not sure if i want 18's or 19's. Would 18's look too small? I will be dropping my car on Eibach's soon as well. Thanks for any help/input.

With the right drop and offsets 18s would look great. Grant's (Gdup35Sedan) old setup came to mind:

Wheels: Rota Boost
2x 18x9 +30 in flat black
2x 18x9 +30 in gunmetal

Tires: Bridgestone RE-01R
size: 225/45/18

2x 3mm spacers for the rear.

In these pictures the car is lowered 2.5" with -2.2 camber up front and -1.4 in the rear.

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Go with at least 19's if not 20's...even 19's look small on the 2nd gen sedan. The wheel wells on the 2nd gen are bigger than those on the 1st gen, that's why most people opt for 20's on the 2nd gen.
Grant's car has pretty aggressive offsets for the 1st gen on his car, that's why it looks good.

Go with 18's or 20's because tires for 19's tend to cost more.

I have 19's and they look small to me, I wish the m45 wheels were 20's that would be perfect.

The OEM factory wheels are 18s and I don't think they look too small. I think it's really the aspect ratio of your tire which will make them look stupid or good. I have 19s and I love them. I have no regrets either. I think 20s also look good so you can't go too wrong deciding between the two. I think it's just a matter of how much sidewall you like.

hm..that sedan doesnt look bad at all. I know 19's will look great but the tire prices are whoa. Also the 18's i think are like 2 lbs. lighter. If i go w/18" x 9.5" with a mid 30's offset. Would a 255/45/18 tire work or would it rub?

The lip will make the wheel look smaller than it is. 18's will look like 17's, and the 19's will look like 18's.

That size would stick out the fenders a little if you're not going to lower the car.
Mid 40's would be better. But if you're not going for an aggressive look then get 18x8.5" high 30's to low 40's all around.
But like Mike said, the wheels will look smaller cause of the lips.