Tire failed on highway apparently due to cracked valve stem.

- Middle Point, OH, USA

Two flat tires on my 2007 F-150 because of faulty valve stems. I called the toll free number for Ford roadside assistance to change the tires both times. Colony tire of elizabeth city repaired both tires for me.

- Elizabeth City, NC, USA

I have had 3 of the 4 tire valves leak 1 has leaked 2 times so a total of 4 leaks over the past 3 months. I have taken them to tire repair shops and also the Ford dealer to fix. The dealer told me they thought it was because of harsh cleaners. I told them I don't use any. The tire repair shops told me they thought it was a problem with the valves. The dealer told me there was nothing they could do but do a repair and charge me that it wasn't a recall or warranty issue. I have been having wearing on my tires due to these problems.

- Thornton, CO, USA

No events led up to the failure. Three valve stems have leaked and had to be repaired/replaced to date. The valve stems all had a slow leak which then led to tires losing air to the point that the tire had to be changed to the spare tire, then taken to be repaired.

- El Paso, TX, USA

I had a valve stem failure which led to a flat tire while driving. When I took the truck in to discount tire to have it checked, they said all of the valve stems were bad and replaced them all. There was no cost to me and no damage. I saw the article in the paper about it and decided to report it for data gathering purposes.

- Phoenix, AZ, USA

I have a 2007 Ford F-150, I have replaced two valve stems in the last 3 months. I felt that this was very strange. If I didn`T have a warning light I would have probably wreck because the tire pressure drop quickly.

- Wetumpka, AL, USA

We've had two valve stem failures on a 2007 Ford F-150 truck. The valve stems had multiple cracks and caused the tire to deflate. The failures occurred have occurred on both front tires.

- Marysville, OH, USA

I own a Ford -150 super crew and I bought it in may of 2007. Two months ago I had a valve stem blow out. I got it fixed. This past Tuesday. I had another valve stem blow out. I took it to a tire repair shop and the other two valve stems we're dry-rotted. I had them replace all three. I believe there is a serious problem with Ford putting on old valve stems. There is no way four valve stems should have dry rotted in 13 months.

- Anniston, AL, USA

Defective valve stems on Ford F150 (2007).

- Mansfield, MA, USA

I purchased a F 150 one year ago. I went into a store only to come out to a flat tire (minutes later). I took it to mincz tire, and the problem was a faulty valve stem. The same thing happened days later. All of the valve stems are cracking and must now be replaced. Later that week, I saw a television report on faulty valve stems, so I decided to report.

- Chesterfield, VA, USA

Valve stem on Ford F150 failed resulting on a flat tire on the highway. Other three valve stems are currently cracking.

- Houston, TX, USA

Excessive out-of-balance vibration with 20"pirelli scorpion atr tires on 2007 F-150 FX4 4X4. Have had tires wheels balanced- does no good. Bought new tires and rims, still have same problem. Ford service has added pinion angle shim kit- does not fix. Service has replaced 1 original pirelli tire, and stated tire was out of round. They still believe tires problem, and supposed to meet w/ pirelli rep to have tires replaced, but have waited 2 1/2 weeks so far. The new toyo tires and rims were put back on, and still vibration. Not as bad, but still vibrates at all speeds. There must be problem w/ front end or brakes, but Ford service has not found yet.

- Puyallup, WA, USA

Excessive out-of-balance vibration with 20"pirelli scorpion atr tires on 2007 F-150. The internet is full of similar complaints. My service Ford dealership says there is a tsb that explains that this condition for the "first 20 miles from rest" is normal. That's hardly acceptable. My mileage is just under 12,000 and my tire warranty is soon expired. They have rebalanced the tires 4-5 times during this period.

- Winters, CA, USA

I recently bought a new 2007 Ford F-150 4 wheel drive. The vehicle had P275/65R18 tires. I would like to know how dot can allow a P tire, dot apu9au612407, to be installed on a 7700 gvw vehicle that will be used off road under max load. The P tires are for passenger cars and will not stand up under heavy off road use. The tires should be lt rated. My previous two new F-150 4 wheel drives had lt tires from the factory. I am told that now they are only installed on F-250 trucks. I believe the P tires constitute a safety hazard.

- Stafford, VA, USA