Got really good mileage for the whole rally (close to personal best); the retread, undersized tires seem to roll really well and the car seems a bit more dynamic with them on. Since I used PnG all weekend, I think the lower weight of the wheels had more impact (positive) than slightly higher RPMs (negative). City driving was definitely limited on this tank as well. On the other hand I was not at all gentle on the gas pedal. I think another lesson learned here.