Any one else having problems with the oem tires flat spotting after the car sits for a few days??? I have an 05 S2K and it's basically my weekend toy so it doesn't get driven every day and can sit for 4 or 5 days at a time. When I first drive the car after it's been sitting I get a vibration from the tires which goes away after they warm up. I know it's the tires because when I drive the car for several days in a row this doesn't happen. I also have a 90 Mustang GT which sits for days at a time too but I never have this problem with it. It has Yokohama AVS ES100's vs the Bridgestone's on the S2K so it may just be the difference in the tires. It's rather anoying and I wanted to see if any one else was experiencing the same thing.

 

If you keep adequate pressure in the tires, they shouldn't flat spot after only a few days.

 

If you pulled into your driveway at 50 mph without ABS, I could see flat spot's occurring after a while.

With ABS on the S2K, how do you get flat spot's

I have never had an issue with vibration's on my S2K.

 

Thanks for the tip. I'll check that but I don't think that's the problem. It's been sitting for three days now so I'll drive it to work tomorrow and see if does it again. The car has to be sitting for at least 3 days before it will produce the vibration. If it's only been sitting for a day or two it's fine.

 

Mine do it too. I even had the balanced checked. It happens at 40 MPH on the same stretch of flat smooth road as I leave the house. I suspected it was something like that, thanks for confirming that this isn't just in my head.

 

If its getting cold where you live, it could just be a combination of low tire pressure and cold air making the tires stiff and out of round untill they heat up. This isn't necessarily abnormal.

 

It's not from slamming on the brakes hard or any thing like that. Flat spotting can occur when a car sits for a long period of time, usually for a month or more like when a car is stored for the winter. The tire developes a dimple or dent in it from the weight of the car pressing on the same spot for an extended period of time. Once the car is driven and the tires warm up the flat spot will go away after a few miles. Never had this happen after only sitting for a week so I wanted to see if any one else was having the same issue.

 

Hmm, this could be the problem. It's been pretty warm here the past few days so if I drive it tomorrow and I don't get the vibration then this is probably the issue.

 

I have flat spotting occurring with the Avon tires I bought recently. My car will sit for 3-4 days sometimes, and has a noticeable vibration for the first 5 minutes of driving. Once the tires are warmed up, it goes away. It does appear to be more noticeable now that it is getting colder here. (Low 40 degrees F.)

Normal tire pressures do not prevent this.

 

"Flatspotting" usually refers to a permanent flat spot ground into the tire, usually by spinning but sometimes by locking up a tire under braking. One this happens, the tire is pretty much ruined.

When a round tire sits for a while with weight on it, it can "take a set". But you will confuse people if you call this "flatspotting". The difference is that after the tire heats up a little, the "set" will disappear.