Help: one rupee tyre test and tyre sizes

amit · 29th September 2006, 11:00

Driver's side tyre in my S10 has developed a 'bulb' and needs to be replaced ASAP. I am confused about the one rupee tire test. Coin on the right rear shows rupee clearly but 1998 below the rupee can't be seen fully. Rest of the tyres, the 'rupee' and 1998 below it are clearly seen. How do I intepret the results? If rest of the tyres are okay, I plan to change only the driver's tyre else the Palio will get new footwear.

Stock tyres are Bridgestone S322 175/65 R14's. Haven't been very satisfied with bridgestones on both the Matiz and now the Palio. I want the tyres to be low on noise. What is the correct upsize from stocks? I was thinking of going in for Michellin's, if I have to buy new tyres. I just want to go one size up. Thanks in advance.

iraghava · 29th September 2006, 17:04

Amit can't really comment on the rupee test without pictures of some sort for reference.

As for the upsize you can consider 185/60 R14 & 195/60 R14 both will suit your car well. For tyres I would recommend Michelin Energy XM1 (more comfort biased), Potenza GIII (Sporty tyre) or Tranza ER60 (again comfort tyre). I'm running Michelin's and find them better than both Goodyear Eagle F1 & Bridgestone S322 which I was running earlier.

adya33 · 29th September 2006, 17:20

Quote:

Originally Posted by amit

Stock tyres are Bridgestone S322 175/65 R14's. Haven't been very satisfied with bridgestones on both the Matiz and now the Palio. I want the tyres to be low on noise. What is the correct upsize from stocks? I was thinking of going in for Michellin's, if I have to buy new tyres. I just want to go one size up. Thanks in advance.

Use online tyre size calculator
http://www.miata.net/garage/tirecalc.html

Buffetfan · 30th September 2006, 12:12

If the suspension geometry of S10 is similar to the regular palio (that came with 165/80R13 tyres) then you can also upsize to 185/65R14 tyres... I particularly like the Goodyear Eagle NCT5 tubelless in this size and have been using them for sometime (22k kms) now

amit · 6th October 2006, 15:56

Thanks for the help guys. The S10 got 4 new tyres. I went in for Michelin Energy XM1 tubeless in size 185/60 R14. It's my first time using Michelins and have been very impressed with them so far. The tyres are very quiet which was just what I wanted from them.

prabuddhadg · 6th October 2006, 16:42

Quote:

Originally Posted by amit

... I am confused about the one rupee tire test. Coin on the right rear shows rupee clearly but 1998 below the rupee can't be seen fully. Rest of the tyres, the 'rupee' and 1998 below it are clearly seen. How do I intepret the results?....

I am all at sea. What on earth is this rupee test? Where do you find the coin? Or is it a figure of speech? Somebody please explain.

supremeBaleno · 6th October 2006, 16:49

Add me also to the list of people who are confused as to what a rupee coin has to do with tyre replacing ?

Buffetfan · 18th October 2006, 01:29

Just to measure the tread depth ...since most of us dont carry vernier callipres around

...

BTW...a tread depth of <2mm is liiegal..did you know that...bet most of the cops dont know either

Sam Kapasi · 18th October 2006, 01:36

I'm lost too, amit, will you please explain to us what is the "rupee" test?

supremeBaleno · 18th October 2006, 10:12

Quote:

Originally Posted by Buffetfan

BTW...a tread depth of <2mm is liiegal..did you know that...

Hmmm. Did not know that. Could you shed more light on how to use the coin to measure the tread ?

Many years ago, me and a couple of friends did a Kerala-Chennai overnight drive on our M800 with all four tyres having almost zero tread. To top it, we had only one working headlight (luckily the driver side one). Can't even imagine doing something like that today.

viper · 18th October 2006, 11:24

Quote:

Originally Posted by Sam Kapasi

I'm lost too, amit, will you please explain to us what is the "rupee" test?

Hi Guys,

It is a simple way to deduce tread life and uneven tyre wear in the absence of a vernier or a tread depth guage. You need to make sure that all treads are worn out evenly to ensure long life of the tyre.

"It is important to know how to check your tyre and take good care of it. The law states that tread depth should be a minimum of 1.6 mm.You may never be fined for breaking this law but it can be unsafe. Check your tyre for wear at your nearest tyre shop using a tread depth gauge which is the most accurate way to measure. An easy way to check is by using the `rupee trick.' Place a rupee coin upside down in the tread and if the Hindi lettering on the rupee disappears in the tread its fine. But if its visible its time to change. Easy isn't it."

Source The Hindu Dec9, 2002.

Viper

prabuddhadg · 18th October 2006, 12:55

Oh! So simple, and I was trying thinking in Hebrew.

Sam Kapasi · 18th October 2006, 13:28

You know, I can't believe how simple that answer was viper,

I was thinking of that stupid stallone movie, Driven, where he throws some coins on the track and picks them up with his tyres.

wolfinstein · 21st October 2006, 15:02

S322 is a stock tyre, Suggest you look at Potenza G3 Series Tubeless, or Potenza series..I've had Stock Potenza on my SFX lancer and they were amazing...and the replacement is even better

Shan2nu · 22nd October 2006, 08:18

Cmon guys, most tyres these days come with a tyre wear indicator (embedded in the tread). When the tyre wears down to the that level, it's time to replace.

The S322s' have it as well.

Shan2nu

29th September 2006, 11:00	#1
amit Senior - BHPian Join Date: Feb 2004 Location: Mumbai Posts: 3,717 Thanked: 449 Times	Help: one rupee tyre test and tyre sizes Driver's side tyre in my S10 has developed a 'bulb' and needs to be replaced ASAP. I am confused about the one rupee tire test. Coin on the right rear shows rupee clearly but 1998 below the rupee can't be seen fully. Rest of the tyres, the 'rupee' and 1998 below it are clearly seen. How do I intepret the results? If rest of the tyres are okay, I plan to change only the driver's tyre else the Palio will get new footwear. Stock tyres are Bridgestone S322 175/65 R14's. Haven't been very satisfied with bridgestones on both the Matiz and now the Palio. I want the tyres to be low on noise. What is the correct upsize from stocks? I was thinking of going in for Michellin's, if I have to buy new tyres. I just want to go one size up. Thanks in advance. Last edited by amit : 29th September 2006 at 11:03.
	() Thanks

29th September 2006, 17:04	#2
iraghava Senior - BHPian Join Date: Oct 2005 Location: Bhaiyyaland Posts: 8,033 Thanked: 265 Times View My Garage	Amit can't really comment on the rupee test without pictures of some sort for reference. As for the upsize you can consider 185/60 R14 & 195/60 R14 both will suit your car well. For tyres I would recommend Michelin Energy XM1 (more comfort biased), Potenza GIII (Sporty tyre) or Tranza ER60 (again comfort tyre). I'm running Michelin's and find them better than both Goodyear Eagle F1 & Bridgestone S322 which I was running earlier.
	() Thanks

30th September 2006, 12:12	#4
Buffetfan Senior - BHPian Join Date: May 2005 Location: Hyderabad Posts: 1,128 Thanked: 195 Times	If the suspension geometry of S10 is similar to the regular palio (that came with 165/80R13 tyres) then you can also upsize to 185/65R14 tyres... I particularly like the Goodyear Eagle NCT5 tubelless in this size and have been using them for sometime (22k kms) now
	() Thanks

6th October 2006, 15:56	#5
amit Senior - BHPian Join Date: Feb 2004 Location: Mumbai Posts: 3,717 Thanked: 449 Times	Thanks for the help guys. The S10 got 4 new tyres. I went in for Michelin Energy XM1 tubeless in size 185/60 R14. It's my first time using Michelins and have been very impressed with them so far. The tyres are very quiet which was just what I wanted from them.
	() Thanks

6th October 2006, 16:49	#7
supremeBaleno Senior - BHPian Join Date: Dec 2005 Location: Chennai / Kochi Posts: 5,546 Thanked: 2,699 Times View My Garage	Add me also to the list of people who are confused as to what a rupee coin has to do with tyre replacing ?
	() Thanks

18th October 2006, 01:29	#8
Buffetfan Senior - BHPian Join Date: May 2005 Location: Hyderabad Posts: 1,128 Thanked: 195 Times	Just to measure the tread depth ...since most of us dont carry vernier callipres around ... BTW...a tread depth of <2mm is liiegal..did you know that...bet most of the cops dont know either
	() Thanks

18th October 2006, 01:36	#9
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Mumbai (but wat Posts: 6,997 Thanked: 2,378 Times View My Garage	I'm lost too, amit, will you please explain to us what is the "rupee" test?
	() Thanks

18th October 2006, 12:55	#12
prabuddhadg BHPian Join Date: Jan 2006 Location: Mumbai Posts: 812 Thanked: 81 Times View My Garage	Oh! So simple, and I was trying thinking in Hebrew.
	() Thanks

18th October 2006, 13:28	#13
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Mumbai (but wat Posts: 6,997 Thanked: 2,378 Times View My Garage	You know, I can't believe how simple that answer was viper, I was thinking of that stupid stallone movie, Driven, where he throws some coins on the track and picks them up with his tyres.
	() Thanks

21st October 2006, 15:02	#14
wolfinstein BHPian Join Date: Feb 2006 Location: New Delhi Posts: 994 Thanked: 20 Times	S322 is a stock tyre, Suggest you look at Potenza G3 Series Tubeless, or Potenza series..I've had Stock Potenza on my SFX lancer and they were amazing...and the replacement is even better
	() Thanks

22nd October 2006, 08:18	#15
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	Cmon guys, most tyres these days come with a tyre wear indicator (embedded in the tread). When the tyre wears down to the that level, it's time to replace. The S322s' have it as well. Shan2nu Last edited by Shan2nu : 22nd October 2006 at 08:20.
	() Thanks