|
Tire size does not have much of an effect on rolling resistance, but directionally, tires with larger load carrying capacities have better RR - in spite of the fact that they may be wider!
Steve, you are going the wrong direction!
- BUT -
THE most important thing when it comes to rolling resistance in tires is the tread compound. It can have a profound affect (up to 60% worst to best)
The problem is that Rolling Resistance / Treadwear / Traction (especially wet traction) tradeoff with one another. Tires that get great rolling resistance are bad for treadwear and / or grip.
You would be further ahead putting the largest tire you can fit inside the fenderwell without rubbing, then selecting a tire that has the proportion of RR/wear/traction that you want.
|