Going from 15s to 18s hurt my acceleration.

[Zedzag]

I took a spin with my new wheel/tire combo on friday. I played around with a buddy's car to see what the added traction was worth. With the old 15s we were door to door...now he pulls me pretty good. I guess the added weight of 10lbs per wheel, increased diameter and distance of mass relative to the axis of the 18s explain why my car feels sluggish. I also had a passenger but I attribute most of the "power loss" due the the extra power needed to turn those big wheels.
Can anyone confirm this with any dyno or track stories of big and heavy vs small and light dia wheels?



I'm still glad to have gone bigger, I just need more power now lol.