Not Logged In Log In   Sign Up   Points Leaders
Follow Us    6:08 PM

Message Forum - Read Message

Category: Car Talk > Topics Add to favorite topics   Post new topicPost New Topic
Author Topic: Tire tread depth Back to Topics
2Tall

Champion Author
Maryland

Posts:18,951
Points:3,572,680
Joined:Jun 2004
Message Posted: Mar 30, 2013 10:43:22 AM

Do you use a U.S. coin? Place a penny into several tread grooves across the tire. If part of Lincoln's head is always covered by the tread, you have more than 2/32" of tread depth remaining or a quarter into several tread grooves across the tire. If part of Washington's head is always covered by the tread, you have more than 4/32" of tread depth remaining.
REPLIES (newest first) Post a Reply
Profile Pic
toms1120
Champion Author Maryland

Posts:14,270
Points:2,443,060
Joined:Jun 2004
Message Posted: Apr 1, 2013 6:49:55 PM

Penny works.
Profile Pic
CactusBobs
Champion Author Arizona

Posts:4,317
Points:940,790
Joined:Jun 2010
Message Posted: Apr 1, 2013 12:59:01 PM

It only rains a few times a year where i live
so
I run tires till there very bald
Profile Pic
OceanArcher
Champion Author Mississippi

Posts:8,277
Points:1,936,775
Joined:May 2004
Message Posted: Apr 1, 2013 12:38:29 PM

The "penny test" is my guideline (2/32 in) is time for replacement
Profile Pic
bluenvoy
Champion Author Nashville

Posts:17,387
Points:2,144,865
Joined:Oct 2005
Message Posted: Apr 1, 2013 9:34:03 AM

My tires are good now since I bought new ones for my SUV.
Profile Pic
Titanic1985
Champion Author South Carolina

Posts:10,003
Points:878,870
Joined:Dec 2010
Message Posted: Apr 1, 2013 9:00:02 AM

Good Morning 2Tall,

Isn't it strange that the penny & quarter method has been around for many decades and is accurate?

You allude to something though that is equally important. You said, "... several tread groves across the tire". Several years ago I went with my daughter to a national used car business to replace my daughter's graduation present (she totaled it by failing to yield the right of way). One of their what I call gimmicks is a dummy oriented tire depth gauge. It didn't have 32nd of an inch increments on it but green, yellow and red segments. Here is where I'm going with this thought. They replaced the two rear tires, but not the fronts. Just for the record, Michelin and the US Government say the new tires go on the rear, not the front as would thought on a FWD vehicle. This is also affirmed by tirerack.com. Getting back to the front tires, I can tell how many 32nds are left after working in a garage and dealing with many tires. Yes, the tread was 4/32" in the middle three treads (their minimum), but NOT on the outside treads. Huh? Either this vehicle had alignment problems or a very race prone driver. They refused to replace the tires because it met THEIR criteria. It certainly didn't meet mine, nor did the Chinese tires placed on the rear!

Take care :-). MGY

[Edited by: Titanic1985 at 4/1/2013 9:01:32 AM EST]
Profile Pic
WEPSMAN
Champion Author South Dakota

Posts:11,331
Points:2,592,150
Joined:Mar 2005
Message Posted: Mar 31, 2013 6:03:42 PM

I usually go by the wear bars. They are also 2/32".
Profile Pic
DasAuto92
Champion Author Montreal

Posts:3,056
Points:200,785
Joined:Apr 2010
Message Posted: Mar 30, 2013 10:17:09 PM

Naw..... This Canuck uses the proper tire depth gauge.
Profile Pic
14smoke
Champion Author Birmingham

Posts:14,732
Points:2,257,155
Joined:May 2005
Message Posted: Mar 30, 2013 10:10:26 PM

Have heard that before, many times.
Profile Pic
bearscharger
Champion Author Cleveland

Posts:3,939
Points:909,825
Joined:Aug 2012
Message Posted: Mar 30, 2013 9:26:38 PM

i go to the wear bars
Profile Pic
chipote
Champion Author Washington

Posts:1,279
Points:496,955
Joined:Nov 2010
Message Posted: Mar 30, 2013 11:41:48 AM

I replace tires at 4/32 left
Profile Pic
metalhat73
Champion Author Wilmington

Posts:11,350
Points:494,005
Joined:May 2012
Message Posted: Mar 30, 2013 11:07:38 AM

No. I wait till the wear bar shows. Haven't used a penny in years. :P
Post a reply Back to Topics