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It used to be a penny test but now it's the quarter test. If you put the penny or quarter into your treat, upside down (so the hair is on the bottom) and if you put the coin in, and you can see the bottom of his head, your treads are too worn out and you need new tires.

WELLLL, my mom is against me upgrading my rims and tires because she thinks I still have perfectly fine tires out there, so we went out and I showed her both the penny test and the quarter test. The penny test passed but the quarter one failed. She still wants me to wait even though its clearly said all over the internet that it's time to change tires. Having it any lower than the quarter test is dangerous, even in rainy and wet conditions.

 
Rep Power: 352

ur car's tire's will turn into slicks soon.... a lot of people pay money for that kinda performance...

haha jk

quarter test is good, but you still have plenty of safe thread left. but when it starts failing the penny test, then you need tires asap.

 
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But, the point is, I want new tires now, hahah. Its not like my parents are paying for it, I have enough funds for it. They just dont want me to waste money when I have "Safe" wheels out there. I'd say that my wheels aren't dangerous, but they're borderline. They have a little bit left, but it's always good to be safe, hold onto them if I would ever need them, and purchase a new set with safe-r tires.

 
Rep Power: 812

i wait for the penny to fail lol. just go easy on them when it rains. i see so many tires that would fail there is nearly no tread left. dont know how people drive like that.

 
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But I'm not looking to get the most out of my tires. lol. I want new ones.

 
Rep Power: 291

Quarter test?
I just use my finger =/
mixed with a guestimate and some common sense

 
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http://www.associatedcontent.com/art..._of_penny.html

 
Rep Power: 291

I honestly just go by feel and looks

Stick my finger in, less than half a CM, is prolly 40% tread left
I approximate 8mm~1cm is 90~100%

 
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sounds like you really want new tires. (rims) i say if you have the money do it!!! haha forget your parents. you will have back ups which is very good.

 
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ywa thats what im sayinnn. its always good to have a decent set of backups.

 
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Why not just use the wear indicators on the tires themselves? It's what they're there for after all.

 
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Goodyear dealers have a little card they give away free, it has a large green portion then yellow then red at 2/32" to indicate depth.

I have searched high and low to buy a tread depth guage local but cannot find one.

 
Rep Power: 367

if your plan is to get wheels and keep these as back-up, i say go for them. just keep some cash for emergencies, though...

 
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yeah the cash isnt a problem for me. I'm still in high school so all I really need to pay for is gas, unless I have any tickets or car problems that need paid for. Total for all wheels and tires would be around 700-800 dollars, which will leave me with a little over a grand for the emergencies...

 
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700 bucks can go a long way when your in college.

My advice is mother knows best...

Take that emergency fund and put it in a CD. You can't touch it until you term is up. 6mos, 12months etc...They have high interest rates so you will build up cash quicker than a standard savings acct. Our cars last so if something happens it is likely manageable, wait until you CD term is up and boom..more $$ for your car than what you put in!

 
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but again cash isn't a problem, my dad has saved up for college for me so why would I need the 700 bucks then?

 
Rep Power: 367

i still think that if you use the argument that having spare wheels and tires is a good one to tell ur mom, espcially that tires are the first things that touches bumps and holes.

 
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to show youre responsible? lol. i wouldnt spend $$ if i had perfectly good tires. in fact my tires suck but i am still using til they die.

 
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yeah I decided to hold out on new rims/tires until these ones go kaplunk. I am looking into OEM Spoilers or a M3 Lip Spoiler.

 
Rep Power: 367

i am on stockies for a year right now - 15" snow tires are cheaper than 16"s, and there was no space for additional wheels in the car during my move to canada
Now soon to go back to TN and re-meet my 16"s
And a set of 15" snow tires for rallycross and another set of 15" summer tires... guess the trunk will be full this time...

 
Rep Power: 291

Who needs snow tires?
What is snow?

Never heard of that in my life...

 
Rep Power: 367

it's that white cotton that you put on your christmas tree
A mexican friend told me that

 
Rep Power: 291

Ahhh, that crap...
I thought it was spider web for Halloween =/

 
Rep Power: 367

bwaaahahaha!