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YOUR RESEARCHMeasure tire wear ? When to change tires?
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Replace too
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Should also note, if tires are over a certain age they should be replaced too.
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Ok, so my rear tires are quite worn out and need replacements soon. That's a no brainer.
The doubt is regarding my fronts. They have signs of wear but not really worn out. That's why this post ...
1) Is there a way of measuring the tire thread depth the "right way" ?
2) I'm guessing you need to replace the tires if the thread depth is less than X millimeters. What is X generally?
FYI, this is a 1999 996 C2, with stock wheels (17"?).
Hi Sid,
If you run your finger along one of the grooves, you should feel small bumps spaced out. Those are built-in wear indicators. If you look at the outter edge of the tire wall, there maybe small tooth-size trianagular pointers locating those wear indicators (at least on my Contis).
When you wear down to those indicators, it's time to replace
- Ahsai
You use a tread depth gauge or a set of calipers. Minimum tread depth is 1/16". Or you can go old school:
http://www.tirerack.com/tires/tirete....jsp?techid=51
Without any special tools, the tires comes with these basic tire wear indicators. Your tires have these tread wear indicators across them, as shown in the picture below. When the rest of the tread reaches the tread wear indicators, it is time to get the tire/s replaced.
Thanks guys. In line with the tirerack link above, check this out. Tirerack measured wet braking distances vs thread wear.
VERY interesting video, MUST watch in my opinion.
http://www.tirerack.com/tires/tests/..._tread_vid.jsp
I've noticed the tire wear indicators on my motorcycle tires ... not on the porsche. Maybe I've already worn them out
! I'm going outside with a quarter now ...
Should also note, if tires are over a certain age they should be replaced too. The rubber gets hard and doesn't stick like they're supposed to and will show cracking.
Anyone know how many years this is? I guess it depends on the tires, but I've been told 5 to 6 years?
It depends on the climate that the tyres are exposed too (i.e. direct sun). Also if the car is sitting on the tyres and not moved for a long time it will distort the shape unless you keep the pressure up all the time. So storing a car for years or having it on display (i.e. car museum) requires a different approach to preventitive maintenance, something I am not familiar with.
