After searching here for hours, trying to figure out what size to get and will weight of the wheel be THAT serious of an issue, I'm still not sure. The plan as of now is to get 16" Rota Subzeros (claimed 14.5 lbs) with Toyo T1-Ss in 205/45/16 . I am currently rolling on my OEM GS-R wheels with 205/50/15s, and do not want to make a drastic decrease (hopefully none if possible) in acceleration and steering response due to interia and rolling resisitance.

Plan B is 17" Rota Subzeros (claimed 16.5 lbs) with T1-Ss in 205/40/17. Is the 2 full pounds going to be very noticeable? From previous searches, most people posted "no" or "it's tough to notice".

Also, I've searched and searched for the post on tire weights from earlier this summer..... I know I remember reading it! Any insight on weight differences from 205/50/15 to 205/45/16 to 205(or 215)/40/17 would be a big help. If I'm missing something here please lemme know.... I just got off work and quite tired. Thanks to all!

 

Unless you race, you won't suffer any speed detriment getting to the next light.
+- .5lbs on a tire = unnoticable, +- 2lbs on each rime = unnoticable.

TireRack did a comparison of lap times and 1/4 mile times with Plus sized wheels. They did use a BMW (I think) but when they had 20" rims that weighed 23lbs, they didn't record or notice any difference in performance.

It might be adifferent story if you are racing your little < 200 hp 4-banger. But since you are looking at 16" and 17" wheels I don't think you are racing anyway.

K1s are nice. Seems all the other good rims are mucho expensive. . .