when to replace tyres

[c-square]

If I am not mistaken, almost all tyres have markings (a triangle symbol) on certain parts of its side wall. I believe they are there to indicate the extend of wear of the tyre thread.... but what are we supposed to see (or what tell-tale signs the triangle will be showing) to know when is the appropriate time to change those rubbers? :unsure:

 

[mrhartge]

Originally posted by c-square@Dec 21 2004, 08:15 PM If I am not mistaken, almost all tyres have markings (a triangle symbol) on certain parts of its side wall. I believe they are there to indicate the extend of wear of the tyre thread.... but what are we supposed to see (or what tell-tale signs the triangle will be showing) to know when is the appropriate time to change those rubbers? :unsure:
csq,U see the triagle on side wall rite? ok , follow the tothe thread(bump across the tyre) & there is a line going across.That is a an indicator, so if u can feel a bump dat means the wear is 60percent already. do u get wan i mean? anyway Pm me ur numberwill explain more.my 2rupiah

 

[kctam]

The triangle denotes the position of the thread wear indicator (TWI). As Mr. Hartge mentioned, follow it & you'll see a raise block running 90 deg. to the groove of the tyre.If your tyre wear is equal to this block, then its definately time to replace.I think most of us will replace tyre even before the wear is equal to the TWI.

 

[c-square]

Originally posted by mrhartge+Dec 21 2004, 03:31 PM-->QUOTE (mrhartge @ Dec 21 2004, 03:31 PM)

 

[mrhartge]

Originally posted by kctam@Dec 21 2004, 08:39 PM The triangle denotes the position of the thread wear indicator (TWI). As Mr. Hartge mentioned, follow it & you'll see a raise block running 90 deg. to the groove of the tyre.If your tyre wear is equal to this block, then its definately time to replace.I think most of us will replace tyre even before the wear is equal to the TWI.
thanks KC...starting to confused csquare aleady... :wacko:

 

[c-square]

Originally posted by kctam@Dec 21 2004, 03:39 PM The triangle denotes the position of the thread wear indicator (TWI). As Mr. Hartge mentioned, follow it & you'll see a raise block running 90 deg. to the groove of the tyre.If your tyre wear is equal to this block, then its definately time to replace.I think most of us will replace tyre even before the wear is equal to the TWI.
OIC... thanks

 

[kctam]

Pssttt C2.... here's a suggestion. You buy new tyres & we'll fit it in our cars. Then, we'll show you month after month how far the thread wears out & once the wear is close to TWI, then it's time for a replacement. Good idea, huh ?

 

[ichiwan2]

You should also look at the age of the tyres. It should not be more than 5 years old, that is from date of manufacture and not from when you bought the tyres. Some will even tell you to get rid of the tyres after three years.A 3 or 4 digit marking on the sidewall of the tyres will tell you when the tyres were manufactured. The first two digits indicate the week of manufacture and the remaining digits, the year. So 3204 means 32nd week of 2004. (Correct me if I am wrong)Can't remember the code for the three digit manufacturing date.Other things you should look at are whether the tyre edges have worn out. Wear on the edges could be due to camber or alignment issues. Or it could be that you like driving too fast going into corners.

 

[mrhartge]

Originally posted by kctam@Dec 21 2004, 09:01 PM Pssttt C2.... here's a suggestion. You buy new tyres & we'll fit it in our cars. Then, we'll show you month after month how far the thread wears out & once the wear is close to TWI, then it's time for a replacement. Good idea, huh ?
gud 1 KC.... :lol: :lol: :lol: :lol:

 

[c-square]

Originally posted by mrhartge+Dec 21 2004, 04:08 PM-->QUOTE (mrhartge @ Dec 21 2004, 04:08 PM)

 

[willie]

i think the 3 digits code also something similar as ichiwan2 mention, but what is know is for 20 century one, not sure about the 21 century..... ex: 327 means 32nd week of yr 1997

 

[kctam]

Originally posted by c-square@Dec 22 2004, 05:54 AM woi.... KC & mrhartge, I know I am "slow" but I can tell the difference between a bad deal and a good one, OK.... and this is a good one, rite?
Good deal if we can get Conti or Pilot Sport. Bad deal if its Dunlop or Simex or rethreads... he he he :lol:

 

[3er]

Originally posted by willie@Dec 21 2004, 04:54 PM i think the 3 digits code also something similar as ichiwan2 mention, but what is know is for 20 century one, not sure about the 21 century..... ex: 327 means 32nd week of yr 1997
Its 4 digits!

 

[bimmerman]

RULE OF THUMB: As a rule of thumb one should change ones tires when the tires emit a loud exploding sound and your car suddenly becomes uncontrollable and sparks starts to fly off your rims. But seriously speaking. I was going to Singapore in a S320 (the big bulky one) and all was fine and cheery. Then I noticed the car was not steering as straight as it should be and the ride quality was not what it used to be. So I decided to stop at the nearest petrol station to investigate and slowed down to about 90KPH. Passed a few petrol stations and felt lazy so I drove on and finally needed to P. So I finally stopped. When I opened the door I smelled a horrible stink of burning rubber! Lo and behold I was riding on my rims with bits and pieces of sidewall hanging on like flesh on a rotting carcass! One of my Uniroyal tires from the left rear side had exploded without my knowledge and I didn't feel or hear a thing! Imagine that!

 

[3er]

Not surprising. Luxobarge like the S class is so comfy it hides the punctured tyre feel. You have to be attentive to feel it even on the 3-series (esp on the rears).

 

[flash]

Originally posted by bimmerman@Dec 21 2004, 06:52 PM RULE OF THUMB: As a rule of thumb one should change ones tires when the tires emit a loud exploding sound and your car suddenly becomes uncontrollable and sparks starts to fly off your rims. But seriously speaking. I was going to Singapore in a S320 (the big bulky one) and all was fine and cheery. Then I noticed the car was not steering as straight as it should be and the ride quality was not what it used to be. So I decided to stop at the nearest petrol station to investigate and slowed down to about 90KPH. Passed a few petrol stations and felt lazy so I drove on and finally needed to P. So I finally stopped. When I opened the door I smelled a horrible stink of burning rubber! Lo and behold I was riding on my rims with bits and pieces of sidewall hanging on like flesh on a rotting carcass! One of my Uniroyal tires from the left rear side had exploded without my knowledge and I didn't feel or hear a thing! Imagine that!
So did you damaged your rims? Guess driving on a flat tyre at 90kmh for do-not-know-how-many kms might have damaged them?

 

[bimmerman]

Yes I did. The rims were bent out of shape due to the weight of the car. For the rest of the trip I had to use the spare. Luckily it was available at a local kedai potong as it was a standard Benz 16 inch alloy rim. Paid RM250 if I remember correctly.

 

[flash]

Originally posted by bimmerman@Dec 22 2004, 09:45 AM Yes I did. The rims were bent out of shape due to the weight of the car. For the rest of the trip I had to use the spare. Luckily it was available at a local kedai potong as it was a standard Benz 16 inch alloy rim. Paid RM250 if I remember correctly.
Hmmm, wonder if you were spewing out sparks like in some of the car chases that was shown on TV... would have looked "cool".

 

[c-square]

Originally posted by bimmerman@Dec 21 2004, 06:52 PM RULE OF THUMB: As a rule of thumb one should change ones tires when the tires emit a loud exploding sound and your car suddenly becomes uncontrollable and sparks starts to fly off your rims. But seriously speaking. I was going to Singapore in a S320 (the big bulky one) and all was fine and cheery. Then I noticed the car was not steering as straight as it should be and the ride quality was not what it used to be. So I decided to stop at the nearest petrol station to investigate and slowed down to about 90KPH. Passed a few petrol stations and felt lazy so I drove on and finally needed to P. So I finally stopped. When I opened the door I smelled a horrible stink of burning rubber! Lo and behold I was riding on my rims with bits and pieces of sidewall hanging on like flesh on a rotting carcass! One of my Uniroyal tires from the left rear side had exploded without my knowledge and I didn't feel or hear a thing! Imagine that!
You must be a "hero" continuing to drive in such conditions, man. Surprisingly how come non of the other motorist signal you of your blown tyres :angry: Anyway, glad nothing untowards happened. Go Merc Go !!!

 

[bimmerman]

The car looked so calm I guess nobody noticed at all. The highway was mostly quiet as it was a weekday. Part of the rim that contacted the road had turned rainbow colour due to the extreme temperature it sustained. Like when you burn chrome. And when metal gets that hot sure got sparks one. This is one Big Merc which I really love. Sadly nobody likes this Merc and the chinese call it Tai Kou Suey.