Yep, title states it all. Just something I was wondering about when I realized that I haven't moved my car in a month.
Yep, title states it all. Just something I was wondering about when I realized that I haven't moved my car in a month.
We've had cars on our lot that have sat for 2-3 months without problems. I wouldn't sweat it.
Good to know. They're just the snow tires, so I don't really care, I'm just curious.
years and years.
Depends tremendously on the tires themselves, not the car. Some tires will flat spot in just a few hours, others can go years.
Depends mostly on the tires and ambient weather conditions. Some can sit for months without flatspotting, others less than a week.
On the same subject, let's say i have a set of RS2s that have been sitting more or less in place on a car for about a year.
They are not flat, but i do know that these are prone to flat-spotting, though they usually work themselves out after a little while.
Chances that these will be useable again?
the bmw has been sitting for 3 years, only moved 4 times......on rs2's, still no flat spots.....;)
Oh lord, now YOU joined... 
you missed the bmw thread......theres more ti owners here
Do fully-inflated tyres actually flat-spot? I've left my DD parked for months at a time while was overseas a bunch of times and haven't gotten anything resembling flat spots. Even the time the valve stem leaked and it sat on a flat for six weeks didn't seem to cause any problem.
yamaha wrote: you missed the bmw thread......theres more ti owners here
I know there's at least two on here with 6-cylinder swaps, too. 
A contractor in Owasso told me he's seen tires the last 10 years deteriorate within 3 to 5 years VS 30 years ago tires would last decades without dry-rot or cracking. He said they changed the composition of the tires. Any one know / verify what brands to avoid ? (I bought coopers and they went bad in just 6 months under 10,000 miles; but others said they always buy coopers with good results... ??? ).
Back in the 60's some of the bias belted performance tires were famous for "flat spotting" after sitting overnight.
My fathers Mustang felt like you were driving on a washboard for the first 10 miles every morning.
The Sumitomo HTR+ that came on my 5-series would flat spot sitting overnight if the ambient was above 50F or so. The shimmy went away in a couple miles, but it was annoying. They are gone now. Current Yokohamas don't do it at all, nor have various Bridgestones and Kumhos, nor the Dunlop snows on the car right now. Some tires are just prone to it.
Hal wrote: felt like you were driving on a washboard for the first 10 miles every morning.
many current performance tires will get this kind of flatspot. It will usually go away once the tires are up to temp.
My Toyo R888's flat spotted readily if the temps were up. They evened out pretty quickly too.
Hahaha. I love you guys. Over on this Volkswagen Forum Site 
, they freak out if their Gti's sit over the weekend, so the put them on jack stands to avoid flat spots :facepalm:
Hal wrote: Back in the 60's some of the bias belted performance tires were famous for "flat spotting" after sitting overnight. My fathers Mustang felt like you were driving on a washboard for the first 10 miles every morning.
They would do that back then. I remember driving with square tires on cold winter mornings. 
However, modern tires don't do it any more - the problem was pretty much gone some time in the 1970s. I've never had an issue with radial tires, and my summer cars sit in the garage from October to April every year. I also have a couple older cars with bias ply tires that may sit for a year or more without being driven, and they work just fine as well.
My ZX2SR sat for 7 months on old Kumho tires. Rolled out with no problems. The brakes will cause more problems from the rotors rusting than the tires.
DukeOfUndersteer wrote: Hahaha. I love you guys. Over on this Volkswagen Forum Site
They're just trying to explain the constant use of jackstands.
With Dunlop Star Specs, less than 8 hours if the temp is 50 degrees or less. I can come out from the office and my rear tires will be like cubes for about 10 miles of driving.
The Firestones on the Roadmaster will flat spot if left sitting more than two days. Flats are gone with in the first two or three miles. None of the rest of my cars have this problem.
When I was in high school I used to run Dayton 12 ply bias tires. If it was colder than 40 they would be like cubes the next morning. It usually took five to ten miles to get them to stop thumping.
It really depends on the tire and the temperature, as was said. My Interco TSLs would flat spot during an 9 hour work day, and if it was below freezing you would lose your fillings on the ride home.
Of course, Interco TSLs are not really street tires.
02Pilot wrote: The Sumitomo HTR+ that came on my 5-series would flat spot sitting overnight if the ambient was above 50F or so. The shimmy went away in a couple miles, but it was annoying.
Yep, had the same experience with Sumitomo HTR Zs. Like you said, it would go away within a couple miles, so it wasn't a big deal.
My Miata hasn't left the garage since December. I'm sure the first few miles will be a bit shaky, but it'll go away. No big deal....
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