FWIW Dispite two alignments in 20k miles I had some slight feathering on my fronts which caused quite a bit of "tire roar" on smooth black-top roads 20mph-40mph was most noticeable. Rotated side-to-side and it's made a huge difference/all is pretty much quiet now. On a 1-10 scale noise was a 7 now it's 3... Bought some time as by the time these start to wear poorly it will be time to replace...
I must add that I could not be happier with Discount Tire. One of my fronts has had a slow leak (5 lbs/wk) ever since I had the tires puts on. 2-3 times I've had different shops check/look for it, to no avail. Discount broke it down, found some junk on the wheel at the bead, took a wire brush to it and all is now well. Best of all no charge for the whole shabang!
08 135 Coupe SGM/Terra
15 Porsche Macan S
- Family Hauler
Last edited by HIPSI; 02-10-2013 at 10:50 PM.