I found some bad reviews of the 450's and really couldn't find any good reviews of them. On the other hand I found and ton of good reviews on the 555s so I went with them. Only a few hundred miles but So far I'm really happy with these tires.
1997 Thunderbird 4.6L LX (out of commission for now)
SCT XCAL 2 From Lonnie, 02 Mustang MAF and air box, Dynomax Cat Back Exhaust, Steeda U/D Pulleys, 70MM FRPP TB, Dual Piston Calipers, KVR Rotors, Alpine CD, Polk Speakers
1996 Thunderbird 4.6L LX Stock
1994 Thunderbird SC (Needs Work, for sale)
1996 Bronco XL - 2003 Escort ZX2 wrecked - 1996 Bronco XLT Sport
Project Car: 69 Lincoln Continental