|
While wider tires have less rolling resistance, the effect is small compared to the differences between tires. At 275 width, you're in the range where RR is not the desired attribute and the tires don't have good RR - and summer tires will be worse than all season tires.
With the 15" tires, you are much more likely to find tires that meet your excpectation for fuel economy/traction/treadwear, all 3 of which are tradeoffs.
Choose wisely.
|