Go Back   Team-BHP > Under the Hood > Modifications & Accessories > Tyre & Alloy wheel Section


Reply
 
Thread Tools Search this Thread
Old 29th November 2011, 22:14   #61
Distinguished - BHPian
 
Nikhilb2008's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 4,765
Thanked: 4,195 Times
Default Re: MRF Z.L.O Performance Tyres

I got a call from MRF. They will send me some details tomorrow. Will post when I can.
Nikhilb2008 is offline   Reply With Quote
Old 29th November 2011, 22:35   #62
Team-BHP Support
 
Vid6639's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 14,389
Thanked: 19,143 Times
Default Re: MRF Z.L.O Performance Tyres

Perfect pics schoudhury. The problem we are discussing is the left tyres on your car. The tread pattern will force water to be pushed towards the centre of the tyre i.e. towards the continuous rib. While turning right on a wet road we feel that grip will be lesser than when turning left.
Vid6639 is offline   Reply With Quote
Old 29th November 2011, 22:53   #63
Distinguished - BHPian
 
Nikhilb2008's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 4,765
Thanked: 4,195 Times
Default Re: MRF Z.L.O Performance Tyres

Vid, you forget that the force of the car pushing down will actually force water to find an easy escape route. So, even though the direction of the tread implies that it is being pushed towards the centre of the tread, in a real world scenario, it will not happen. There is an immense force on the water which is trapped below the contact patch. This will force water away from the car.
Nikhilb2008 is offline   Reply With Quote
Old 30th November 2011, 07:14   #64
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by Nikhilb2008 View Post
Vid, you forget that the force of the car pushing down will actually force water to find an easy escape route. So, even though the direction of the tread implies that it is being pushed towards the centre of the tread, in a real world scenario, it will not happen. There is an immense force on the water which is trapped below the contact patch. This will force water away from the car.
Very true Nikhil but in a real world situation there will be a differential in available grip in the wet at higher speeds with the same set of tires mounted on either side of the car and that is dangerous. Every little bit of grip counts in the wet. It would be like mixing different brands of tires. Grip from these tires in the dry would be very similar but in the wet it will be slightly different which will not be noticed by the average person but will be felt by the ones who take it to the limit in the rain and all too suddenly to their peril if I may add.
Purely ribbed motorcycle tires are there and they too push the water forward and outward but the rider knows the tire's limits. Here the problem is the differential when taking a right turn in the wet in the pictured red car or when the left side of the car is driven through standing water. Owners of these tires need to be aware of the issue.
drpullockaran is offline   (5) Thanks Reply With Quote
Old 4th December 2011, 21:44   #65
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by Nikhilb2008 View Post
I got a call from MRF. They will send me some details tomorrow. Will post when I can.
Awaiting for some news about the zlo. Have the MRF guys brushed it under the carpet.
drpullockaran is offline   Reply With Quote
Old 4th December 2011, 21:46   #66
Distinguished - BHPian
 
Nikhilb2008's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 4,765
Thanked: 4,195 Times
Default Re: MRF Z.L.O Performance Tyres

Dont accuse them without knowing the facts! The simple fact that I got a call and an explanation from their technical head proves that they are NOT brushing this under the carpet.

I agree, the delay is annoying but accusing them of this is not acceptable!
Nikhilb2008 is offline   (2) Thanks Reply With Quote
Old 4th December 2011, 22:01   #67
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by Nikhilb2008 View Post
I got a call and an explanation from their technical head.
Please share with us the explanation provided to you by the technical head. I am planning to buy them in the near future if safety concerns are addressed.
drpullockaran is offline   Reply With Quote
Old 4th December 2011, 23:20   #68
BHPian
 
Join Date: Feb 2011
Location: Delhi
Posts: 236
Thanked: 129 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by Nikhilb2008 View Post
Vid, you forget that the force of the car pushing down will actually force water to find an easy escape route.
Yes, until the point that the surface tension of the water below the tyre exceeds the rolling friction of the tyre+car. Car will aquaplane at some point. What will be interesting to know is the behaviour till that point.

What worries me is that in wet weather there may be a steering issue because of differing grip levels between left and right front wheels.

Eagerly waiting for the explanation from the MRF engineers.
cranky is offline   Reply With Quote
Old 5th December 2011, 00:44   #69
Distinguished - BHPian
 
Nikhilb2008's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 4,765
Thanked: 4,195 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by drpullockaran View Post
Please share with us the explanation provided to you by the technical head. I am planning to buy them in the near future if safety concerns are addressed.
Yes sir! Definitely! I havent been given the go-ahead yet but will speak to him tomorrow and get back to you asap!

Quote:
Originally Posted by cranky View Post
Yes, until the point that the surface tension of the water below the tyre exceeds the rolling friction of the tyre+car. Car will aquaplane at some point. What will be interesting to know is the behaviour till that point.

What worries me is that in wet weather there may be a steering issue because of differing grip levels between left and right front wheels.

Eagerly waiting for the explanation from the MRF engineers.
I agree but there must have been some reason for the engineers to do this!

PS: Are you ex-sangram from TE? The Audio DIY guru?
Nikhilb2008 is offline   Reply With Quote
Old 5th December 2011, 02:48   #70
Senior - BHPian
 
shuvc's Avatar
 
Join Date: May 2005
Location: Kolkata
Posts: 2,895
Thanked: 282 Times
Default Re: MRF Z.L.O Performance Tyres

Maybe a stupid Q !

How do other asymmetric tyres overcome this issue? Say the PP2, although it does not strictly have the 'half-V' shaped inner tread like the ZLO.

PP2
Name:  Michelin PP2.jpg
Views: 2962
Size:  8.9 KB

PS3
Name:  Michelin PS3.png
Views: 2454
Size:  19.7 KB
shuvc is offline   Reply With Quote
Old 5th December 2011, 12:13   #71
BHPian
 
Join Date: Feb 2011
Location: Delhi
Posts: 236
Thanked: 129 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
PS: Are you ex-sangram from TE? The Audio DIY guru?
Not a guru by any means Still got miles to learn.

But yes, my name is Sangram, from TE. My nick has changed at that forum too.
cranky is offline   (1) Thanks Reply With Quote
Old 5th December 2011, 15:13   #72
Senior - BHPian
 
Schoudhury's Avatar
 
Join Date: Jan 2010
Location: Blore/Dallas-TX
Posts: 1,066
Thanked: 469 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by Nikhilb2008 View Post
Yes sir! Definitely! I havent been given the go-ahead yet but will speak to him tomorrow and get back to you asap!



I agree but there must have been some reason for the engineers to do this!

PS: Are you ex-sangram from TE? The Audio DIY guru?
Nikhil .
I have already bought these tyres from your shop and till now im happy with them .

But, back of my mind and i m kinda concerned now , if these tyres might not be good in wet conditions, or if there is any precaution that i need to take while driving .

Please keep us posted as soon as you get some update from the MRF guys.

Cheers.
Schoudhury is offline   Reply With Quote
Old 5th December 2011, 15:33   #73
Senior - BHPian
 
reignofchaos's Avatar
 
Join Date: Apr 2007
Location: Bangalore
Posts: 2,206
Thanked: 1,151 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by shuvc View Post
Maybe a stupid Q !

How do other asymmetric tyres overcome this issue? Say the PP2, although it does not strictly have the 'half-V' shaped inner tread like the ZLO.

PP2
In my personal experience, PP2 did aquaplane quite a bit. I guess this is an issue with all asymmetric tyres.
reignofchaos is online now   Reply With Quote
Old 5th December 2011, 18:32   #74
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by shuvc View Post
Maybe a stupid Q !

How do other asymmetric tyres overcome this issue? Say the PP2, although it does not strictly have the 'half-V' shaped inner tread like the ZLO.

PP2
Attachment 852082

PS3
Attachment 852083
I am on the learning curve so take this info with a lot of salt.

All other things being equal; tires that have a channel for water to evacuate from the center to the outside of the tire will aquaplane less than pure ribbed tires. The PP2 has deep treads when new but no channel for water to flow away from the center of the tire. In pure ribbed tires like the dry tires of formula1; will aquaplane faster than ribbed tires with water channels to the outside like the Formula1 wet weather tires. The dangerous part is when the right side tire is pure ribbed and the left side tire that has ribs and varying pitch lateral channels. The grip levels will vary on either side. Its more dangerous to have tires that have differing levels of grip than pure ribbed tires. So in a nutshell its better to have the Michelin PP2 than have asymmetric tires that offer differing grip levels in which direction the tire is rotating. Asymmetric tires should have right and left side unidirectional tires or have bidirectional tread.

Last edited by drpullockaran : 5th December 2011 at 18:33.
drpullockaran is offline   Reply With Quote
Old 5th December 2011, 22:22   #75
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Re: MRF Z.L.O Performance Tyres

Quote:
Originally Posted by drpullockaran View Post
that offer differing grip levels in which direction the tire is rotating.
It should read "that offer differing grip levels depending on which direction the tire is rotating". The word depending in/on was missing in my previous post which made the sentence quirky.
drpullockaran is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
MRF ZLX Tyres RSR Tyre & Alloy wheel Section 20 17th October 2017 10:39
MRF ZSLK eco-friendly, silica tyres StarScream Tyre & Alloy wheel Section 19 9th August 2016 12:08
MRF!!Tyres of the18th century humyum Tyre & Alloy wheel Section 24 8th September 2008 19:27
76mm Honda performance pistons, baleno performance cam & NOS kit for sale. mclaren1885 Shifting gears 6 16th September 2007 14:02


All times are GMT +5.5. The time now is 12:18.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks