Quote:
Originally Posted by Clev
Wouldn't LT tires have less sidewall flex on a lighter truck, giving increased mileage at the expense of ride quality?
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The improvement in rolling resistance in a tire comes from the tread compound. Sidewall plays almost no role in what can be changed to affect RR.
But even when LT type tires start coming in LRR varieties, the fact that LT tires have high unit loading (high loads compared to the amount of space they occupy), P metric tires will always have better RR.
Based on the most recent study, larger tires have better RR. I know this sounds counter intuitive but that is what it says. I discuss this here:
http://www.barrystiretech.com/rrandfe2.html