ZX2's are bad for having an idle shake. It is usually a combo of the knock sensor and slack in the timing belt.
I would think I would see a greater benefit running narrower tires all around. Here is my logic - When starting out, there is less rotational mass to get up to speed, reducing fuel consumption. At speed, the narrower tire would have less of an aero penalty, helping fuel economy even more. Correct me if I am wrong!
If it affects my coasting any, I'll simply add more and better aero mods to raise my coasting distance back up
And the biggest reason we do not run spare tires is they are high RRC bias ply tires (usually). They simply kill coasting, MetroMPG did a write-up on their coastdown distance... not pretty.
Thanks Balto! I have thought this about the RE92's since I got on Ecomodder by the number of peeps running them. I might need to stick with what is tried and true...
I had not thought about running the tire's placement backwards, 2000mc
I may have flubbed a bit on my own cars weight
I really should weigh this thing since I have done weight reduction. I'm soon to be removing the p/s and a/c and installing an underdrive crank pulley soon, so I will weigh it after that.
The weight distribution cuts it close, a lot closer than I realized.