Test drove new F-150 super-crew-cab 4X2, at 60 mph experienced a terrilbe shimmy in steering wheel and bad vibration from left rear of truck. Returned truck to lot and test drove new F-150 super-crew-cab 4X4, experienced the same problem at 30 mph and 60 mph. Bought 4X4, salesman said the truck most likely needed wheel ballancing, or it was out of round. We made an appointment for two days later to address the shimmy/vibration problem.the mechanic had the truck on lift for twenty minutes. Result, dealer has to order a part for a service bulletin that requires a vibration dampening device to be installed. This is interesting, ther is a whole lot of new F-150 trucks at this dealership. I drove two and both had same problem. They (Ford), have a known service bulletin for this problem and yet as plentiful as this problem is on the lot they have to order the part, again for a know problem documentd by their bulletin that this part is required and they don't have it in stock to fix my truck or the other one I test drove on their lot or the next one and so-on and so-on.....after reading all of these complaints there had better be a fix for this or I will surely deliver my $40,000 worth of inquiries and advertisements. Motor trend truck of the year...or not!!!

- Silverdale, WA, USA

While driving with the rear window open, the vehicle vibrated. The driver took the vehicle to the dealer for analysis. Extreme vibration of the cab was encountered upon leaving either or both rear door windows below 30%while driving above 35 mph. The vibration increased when the speed increased and was most prevalent above 50 mph. The vibration seemd to be caused by air pressure entering the vehicle.

- Reidsville, NC, USA