tkjeeper
NAXJA Forum User
- Location
- anywhere thats free
This past summer I had small stock 28's on for the highway driving I do and switched to my winter tires with a small lift, 31" Bridgestone Dueller A/T's. So the way I figure it the tires are 10% larger in diameter. I would get over 700 km's on a tank of fuel with the old 28's, now with 31's I'm barely hittin 450 km's. Now I've kept track of the rpm old and new and I'm still under 2000 rpm's at 100 kph. If my rpm's arent siginificantly higher and tires are only 10% larger, why the drop of 30% fuel mileage?? Any help would be appreciated.