View Single Post
Old 11-25-2007, 08:50 PM   #109 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,046

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.01 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,835
Thanked 5,696 Times in 2,943 Posts
05-22-2006, 11:57 Am

one of the things the car needed to pass inspection was a set of tires. so, on went a set of snows i last used on my accord which were sitting in the garage.

they're significantly bigger than the stock tires. the car has gone from stock 145/80/12 to 175/70/13 with wheel revolutions per mile decreasing from 954.303 (12's) to 890.595 (13's), or 6.7% from stock. (handy web calculator)

the effective gearing change should help things when electrified, since the electric motor's torque is way down low, and its RPM range isn't as high as the stock engine.

their rolling resistance is surely not great. (max sidewall is 35psi, and those blocky treads are sure to squirm in warm weather).

they're big winter boots for this little car, and it shows.

click to zoom:


fat treads



12 to 13 inch rims, before & after

at least i now have the tires mounted on a set of rims i can swap over to the blackfly when the depths of winter return, instead of relying on the crappy snow/ice abilities of the goodyear invictaaaaAAAAAAAAGGGGGHHHHH's

---

why bother electrifying the car when it's already a hybrid?

a hybrid mix of suzuki, geo and pontiac!


__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote