Tire Tread - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

white_knight · 04-15-2013, 07:41 AM

Is there a way to estimate how many KMs a tire has done by inspecting the tread?

I am buying some near-new tires and would like to know their mileage.

coyote · 04-15-2013, 07:45 AM

Dude, you live in Australia. There's no I in tyre.

As for the tyre, you can work out what percentage has been used by measuring the tread depth, but they all wear at different rates.

DarkSunrise · 04-15-2013, 08:38 AM

You can't really predict how many more miles a tire will last, but you can use a tire tread-depth tool (cheap) to measure how deep the tread is. Most tires come with 10/32" new, and wear out at 2/32".

So, for example, if you measure the tire you want:

- at 8/32", there is 75÷ life remaining
- at 6/32", there is 50÷ life remaining
- at 4/32", there is 25÷ life remaining

white_knight · 04-15-2013, 09:59 AM

The tires (or tyres) I am buying are described as having only done 100kms -- but I guess there's no real way to check this, is there?

SloS14 · 04-15-2013, 10:08 AM

Quote:

Originally Posted by white_knight

The tires (or tyres) I am buying are described as having only done 100kms -- but I guess there's no real way to check this, is there?

Buy a brand new tire and drive it exactly 100km, compare it to the tire in question.

DarkSunrise · 04-15-2013, 10:11 AM

With only 100km, there should be virtually no wear on the tread. Buy the tire-depth tool, make sure the tread depth is at 10/32".

Grimlock · 04-15-2013, 11:48 AM

Quote:

Originally Posted by DarkSunrise

With only 100km, there should be virtually no wear on the tread. Buy the tire-depth tool, make sure the tread depth is at 10/32".

This is the answer. a tire with 62 miles on it should be indistinguishable from new.

OrbitalEllipses · 04-15-2013, 12:13 PM

As these posters have indicated, tread depth > mileage on the tire. I could have driven 100 brutal, tire-slaying track miles, and sell them as 100 mile tires; tread depth should indicate this type of wear whereas a mileage figure does nothing.

f0rge · 04-15-2013, 01:15 PM

a nearly new tire should have almost all of those "nubs" still in place.

DR 86 · 04-16-2013, 10:35 PM

Mileage means nothing; just check the tread wear. Besides, tires take 100-500km to break in before they grip anyway. Before that they'll feel greasy.

04-15-2013, 07:41 AM	#1
white_knight Senior Member Join Date: Jul 2012 Drives: 2013 86 GTS - Pegasus White Location: Sydney, AU Posts: 237 Thanks: 88 Thanked 103 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Tire Tread Is there a way to estimate how many KMs a tire has done by inspecting the tread? I am buying some near-new tires and would like to know their mileage.

04-15-2013, 08:38 AM	#3
DarkSunrise Senior Member Join Date: Apr 2012 Drives: 22 BRZ (Previously 13 FR-S) Location: USA Posts: 5,798 Thanks: 2,187 Thanked 4,243 Times in 2,221 Posts Mentioned: 48 Post(s) Tagged: 2 Thread(s)	You can't really predict how many more miles a tire will last, but you can use a tire tread-depth tool (cheap) to measure how deep the tread is. Most tires come with 10/32" new, and wear out at 2/32". So, for example, if you measure the tire you want: - at 8/32", there is 75÷ life remaining - at 6/32", there is 50÷ life remaining - at 4/32", there is 25÷ life remaining __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

04-15-2013, 10:11 AM	#6
DarkSunrise Senior Member Join Date: Apr 2012 Drives: 22 BRZ (Previously 13 FR-S) Location: USA Posts: 5,798 Thanks: 2,187 Thanked 4,243 Times in 2,221 Posts Mentioned: 48 Post(s) Tagged: 2 Thread(s)	With only 100km, there should be virtually no wear on the tread. Buy the tire-depth tool, make sure the tread depth is at 10/32". __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

04-16-2013, 10:35 PM	#10
DR 86 Senior Member Join Date: Oct 2012 Drives: 2013 FR-S Location: Toronto Posts: 292 Thanks: 17 Thanked 76 Times in 60 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Mileage means nothing; just check the tread wear. Besides, tires take 100-500km to break in before they grip anyway. Before that they'll feel greasy. __________________ Perrin CAI\|Perrin MCB\|P&L header\|Motiv OP/FP\|MXP catback\|Tein Type Flex coilovers\|Eibach F/R sway bars\|GS front strut brace\|Street:PM HC+800/Track:Carbotech XP10\|StopTech slotted rotors/SS lines\|SBC RPF1s\|Street:FK453/Winter:Pirelli SottoZero3/Track:Toyo R888s\|Leg Sport rear spoiler\|EcuTek Tuned\|OEM oil cooler\|4th/F1 brake lights

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04-15-2013, 07:45 AM	#2
coyote Senior Member Join Date: Oct 2011 Drives: Slowly Location: brisbane.qld.au Posts: 1,064 Thanks: 212 Thanked 539 Times in 235 Posts Mentioned: 21 Post(s) Tagged: 1 Thread(s)	Dude, you live in Australia. There's no I in tyre. As for the tyre, you can work out what percentage has been used by measuring the tread depth, but they all wear at different rates.

04-15-2013, 09:59 AM	#4
white_knight Senior Member Join Date: Jul 2012 Drives: 2013 86 GTS - Pegasus White Location: Sydney, AU Posts: 237 Thanks: 88 Thanked 103 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The tires (or tyres) I am buying are described as having only done 100kms -- but I guess there's no real way to check this, is there?

04-15-2013, 12:13 PM	#8
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,890 Times in 2,903 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	As these posters have indicated, tread depth > mileage on the tire. I could have driven 100 brutal, tire-slaying track miles, and sell them as 100 mile tires; tread depth should indicate this type of wear whereas a mileage figure does nothing.

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