He's on XM radio laying this stuff out there for free. Sure, he sells many different products, but he lays it out free on the radio.
I can't say anything better than what he would say. Go to his website, find the link for the Michelin rolling resistance list, and make rolling resistance one of your primary factors in buying the tires. Kevin claims to have checked it out already, the Michelin website gives accurate numbers for all brands of tires so you can compare, and, 'no', Kevin isn't sponsored by Michelin.
No one should be offended by this guy, he's been there and done it, he's applied a calculator to everything like probably no one else you're going to meet, and he's branched out in every direction from tax law to personal finance, to maintenance, fuel economy, contracts.... I can't say he's tried to make his own logbook, though. ;-D
As far as the Turbo 3000 goes, they've pulled those commercials claiming 10% or your money back. Without trying it, I bet it does give some people a couple tenths of a mile per gallon more. And, if that's the case, it'll much more than pay for itself in a short time. Maybe it doesn't work in some applications, too. I think the most egregious thing was the claim that it'll boost your mileage 100% OR YOUR MONEY back- ok, they weren't claiming 100%, but it's equally truthful to say 10% OR YOUR MONEY BACK as it is to say 100% OR YOUR MONEY BACK, since you were never likely to get either. They've fixed that, though.
Actually, here's the link to find the rolling resistance on the tires you are thinking about
:
http://cdlofit.ning.com/page/page/sh...APage%3A359512
My steers are the Bridgestone 280s, my drives are the 287 ELs. No matter how they wear, they won't be what I put on next time, I'll be going for lower rolling resistance.