Tires 7/32 8-9/32 ratio's of thread left, whats it mean
#1
Melting Slicks
Thread Starter
Tires 7/32 8-9/32 ratio's of thread left, whats it mean
Tires 7/32 8-9/32 ratio's of thread left, whats it mean?
When looking at some Tires i find people put a ratio of thread left. How do i know what there talking about ?
When looking at some Tires i find people put a ratio of thread left. How do i know what there talking about ?
#3
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For example if a 40k mile tire has 10/32" new and assuming that at 2/32" it is used up then a used tire with 8/32" would have 6/8=3/4 of its life remaining or 30k miles in our example.
#4
Le Mans Master
These are imperial measurements of the depth of the grooves
in the tread or wear surface of a tire.
7/32" = .21875" (5.556 mm)
9/32" = .28125" (7.144 mm)
and so on.
The smaller the value, the shallower the grooves, the closer the
tire is to being worn out.
A tool known as a Tread Depth Indicator is convenient for taking
measurements. This has a plunger with graduations from 0 to 1"
in 1/32" increments that enables direct readings to be made easily.
in the tread or wear surface of a tire.
7/32" = .21875" (5.556 mm)
9/32" = .28125" (7.144 mm)
and so on.
The smaller the value, the shallower the grooves, the closer the
tire is to being worn out.
A tool known as a Tread Depth Indicator is convenient for taking
measurements. This has a plunger with graduations from 0 to 1"
in 1/32" increments that enables direct readings to be made easily.
#6
Melting Slicks
Thread Starter
Ok, so that the guage... Is there any other kinda guage i may have around the garage that will work.
so
10/32 Is New
9
8
7 Getting older but ok
6
5 Mid
4
3 Getting low
2
1
0 SLICK
is this about correct ????????
call me slow
so
10/32 Is New
9
8
7 Getting older but ok
6
5 Mid
4
3 Getting low
2
1
0 SLICK
is this about correct ????????
call me slow
#8
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another old trick is to use a penny upside down in the tread and if you can see his head over the tread the tire is worn out. also there are wear bars on tires that run across the width they are usually at 2/32" if those are flush with the tread the tire is worn out......hope this helps.
#9
No. The amount of new tread depth is different for different tires. Even with a single tire model, it can be different by size. You can look up the tire at places like tirerack and see what the new tread depth is. Most street tires are in the 9-11/32" range when new.
Other than that, your chart is about right. Most tires start to get a little iffy in the wet around 4/32" or so. At 2/32" they are illegal in most states and unsafe unless you're somewhere where it never rains. At 0/32" it's not just bald, but you'll probably have wires sticking out.
A ruler.
Other than that, your chart is about right. Most tires start to get a little iffy in the wet around 4/32" or so. At 2/32" they are illegal in most states and unsafe unless you're somewhere where it never rains. At 0/32" it's not just bald, but you'll probably have wires sticking out.
A ruler.
#10
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Each tire has a 3 or 4 digit date code following the DOT numbers on the sidewall. First 2 numbers is the week the tire was born. The numbers after that is what year. 457 was made in week 45 of 1997. 4203 was made in the 42nd week of 2003. Tires more than about 6 years old, depending on how they were kept, will start to vulcanize (turn hard as a rock). After this happens, they'll wear more slowly, and kill you more quickly.