I imagine the softer sidewalls of snow tire help reduce rolling resistance as well?
Continental TrueContact Disappointment
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Originally Posted By: IndyIan
I imagine the softer sidewalls of snow tire help reduce rolling resistance as well?
That would be counter-intuitive...more flex = more heat = more energy loss...right?
Still surprised by the OPs result...softer snow tire tread blocks would seem to be a source of increased rolling resistance...
I imagine the softer sidewalls of snow tire help reduce rolling resistance as well?
That would be counter-intuitive...more flex = more heat = more energy loss...right?
Still surprised by the OPs result...softer snow tire tread blocks would seem to be a source of increased rolling resistance...
Originally Posted By: IndyIan
I imagine the softer sidewalls of snow tire help reduce rolling resistance as well?
As Astro14 said, the opposite would be true
- BUT -
The sidewall only plays a small role in RR. The single most significant element in a tire's RR is the tread. How much is there and what is it made out of?
And, of course, the inflation pressure plays a significant role as well.
I imagine the softer sidewalls of snow tire help reduce rolling resistance as well?
As Astro14 said, the opposite would be true
- BUT -
The sidewall only plays a small role in RR. The single most significant element in a tire's RR is the tread. How much is there and what is it made out of?
And, of course, the inflation pressure plays a significant role as well.
Originally Posted By: CapriRacer
Further, it is quite possible for this tire to consume more fuel than a half worn winter tire (Don't forget, as tires wear, the fuel economy goes up!)
this is the best answer here. when i bought new "LRR" purecontacts with ecoplus to replace worn out ecopia OEM tires in my prius, i lost 15% MPG in my city/suburb driving routine. it was very consistent and real day after day in my predictable commute. if someone else told me this i would say impossible, but it happened. i posted about it here too over a year ago. now, after 30,000 miles, the MPG hit is more reasonable at 5-10%. the tread wear is fantastic with lots of life left, will probably last 50-60,000 miles.
Further, it is quite possible for this tire to consume more fuel than a half worn winter tire (Don't forget, as tires wear, the fuel economy goes up!)
this is the best answer here. when i bought new "LRR" purecontacts with ecoplus to replace worn out ecopia OEM tires in my prius, i lost 15% MPG in my city/suburb driving routine. it was very consistent and real day after day in my predictable commute. if someone else told me this i would say impossible, but it happened. i posted about it here too over a year ago. now, after 30,000 miles, the MPG hit is more reasonable at 5-10%. the tread wear is fantastic with lots of life left, will probably last 50-60,000 miles.
I put a set of TrueContacts on my Subaru a few thousand miles ago, replacing Michelin Primacy MXV4 which were 5-6/32s remaining at about 70,000 miles of wear but were developing some disturbing rubber cracking and were 6 years old.
MPG took a bit of a hit, but within margin of error for new tires. We'll see how they hold up long term. They're as good as the MXV4's in wet, almost as good in dry, no winter conditions encountered yet.
MPG took a bit of a hit, but within margin of error for new tires. We'll see how they hold up long term. They're as good as the MXV4's in wet, almost as good in dry, no winter conditions encountered yet.
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