Quote:
Originally Posted by oil pan 4
What are the general differences say between an LLR tire and an ultra high preformance all season V or higher speed rated tires?
The biggest difference I see in ultra high preformance class is soft rubber and low tread wear numbers.
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There is a technology triangle involving Rolling Resistance, Treadwear, and Traction (Grip). In order to get high values in one area, you have to sacrifice one or more of the other areas.
As a general rule, the higher the speed rating, the more "Grip" oriented the tire is - although there are plenty of exceptions.
So a Ultra High Performance all season tire will be geared away from RR and towards Grip (again, there are plenty of exceptions)
And everyone should be aware that "LRR" means relative to other similar tires - which means the same UTQG treadwear and traction ratings. It does NOT mean a low value in the absolute sense.