Wheel Cover Issues
First off these are 'Made in Taiwan' and they are cheaply made although they did cost me just under $105 USD to my door from speedwaymotors.com
Other places charged $130+ w/o S/H for the same cap so buyer beware.
The chrome is decent enough, but I'll probably put the stock ones back on this next winter and save the chromes for nicer weather.
I had to spread the tension claws with a rubber mallet on a wooden bench to get them to fit tight enough to work. Even still they squeak when driving through a parking lot or residential(matches the sound of the horn.) I've tried like the dickens to get them to pop off in fast cloverleaves and tight turns, but they haven't fallen off yet. Anyway, you've been warned.
If you look at the picture close you'll see that the covers are about an inch smaller in diameter than the stock plastic ones. They clear the stock wheel weights nicely. The stock plastics extend beyond and cover the weights. I've seen where guys have painted the outer portion of the wheels, where the weights set, both either red or white to a pleasing effect. Check out the pics. Spun stainless disks are another cool way to go.
Cars have had full disk wheel covers for decades without causing overheated brakes, besides, the brakes are on the other side of the steel wheel. As far as fuel economy goes, I've noticed a marked improvement in fuel conservation at sustained speeds in excess of 135.8 mph. Good luck!