"Dick Watson" <littlegreengecko@mind-enufalready-spring.com> wrote in message news:<RcWxb.21095$sb4.8290@newsread2.news.pas.eart hlink.net>...
> I just replaced the OEM Bridgestone Dueler H/T D684s on my 2000 CR-V with
> identical sized Pirelli Scorpion STRs.

> This is not a one fill fluke, and I think it's real from driving
> characteristics: I seem to have to use more accelerator to do the same speed
> and on hills I travel frequently, the vehicle seems to spend a lot more time
> downshifted. I have checked and re-checked the tire pressure. I've even run
> them higher than the door jamb pressure by 3psi (which really hurts ride
> quality but seems to make no difference in the basic problem.)
>
> So my question is this: where's the energy from the apparently significantly
> higher rolling resistance getting dissipated? Based on the UTQGs, it
> shouldn't be in heat buildup or tread wear. What's left?

Could be a combination of things. More flexible tread that heats more
at speed. Maybe the brakes aren't releasing as fully after the tire
work. My real guess is that the tires are slightly larger and you are
going slightly faster and farther than you think.

Good Luck,
Roadie Roger