Re: Tyres

yeaahhh thanx bro fr ur help!!

Re: Tyre change in TVS APACHE RTR HYPER EDGE

Ceat vertigo sport, MRF Zapper FS/FM, Michellin Sirac Street, all are good. . .

Cheers!!!

Re: Tyres

Its err....a company i guess. AFAIK.
I dont know if it manufactures tyres or what but tyres come with that brand name.

Re: Tyres

Need proper Off-Road tyres for rim size of 17". I dont mean dual purpose, I mean proper off road, M/T types. Dont want S/T or H/T, just M/T. Found a few online outside of India, but don't know if I can import.

Re: Tyres

Guys what if we spray hydrophobic liquid like NEVER WET all over the tyre?? Just an idea, dunno what will be it's effect.. Anyone??

For those who don't know what is NEVER WET check here http://www.neverwet.com/

Sent from my MT11i using xBhp Connect mobile app

Re: Tyres

Just have a look at the newly launched tyre models from DUNLOP. I think they are nearly MT Type. If it suits your need you can get those easily otherwise you will have to opt for a Foreign Brand.

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You are not fully correct. My TVS tyre had deep treads but it used to slip like hell in wet patches. The factors which decide grip in descending order of their influences is as follows:
1) Foremost is the compound of the tyre. If its a soft compound tyre it will grip better. Not only the soft compound the material used for the compound decides whether it will be good in wet or dry grip.
2) Treads which will channel water out of the contact patch. But looking at just deep treads one cannot conclude that the tyre is good in wet conditions.
3) Deep treads like button type are good in slush and off-roading for sure.

Re: Tyres

Can you tell me the model name and the sizes available? I tried to find it on their website but couldn't.

Re: Tyres

can somebody suggest me 16 inch button tyre. width around 3 inches. tube type. need more height of button.
or any dealer who keeps/imports Dunlop, IRC, Pirelli in mumbai/Thane/Panvel?

Re: Tyres

I am not comparing brands/tyre compound here.. It is simple tread depth I am talking.

Here is a good read on tread depth and tyre performance. It is the same tyre, same compound, same geometry. Here is the conclusion:

Simply, the less the tread depth, the poorer the grip of the tyres in all wet conditions - in cornering and accelerating and braking. AutoSpeed - The Slippery Stakes - Wet Road Tyre Grip

A good tread depth Ceat tyre may in all chances be better than a Michelin without tread on a wet surface. The statement is debatable, but that's my understanding.

If you have two Michelins of the same compound and similar rolling resistance, the one with more tread would outperform the one with less tread on a wet surface.

Another good read why tyres have tread depth is here - TYRE SAFETY | Tyres

Re: Tyres

Thanks for the information links you provided. First you are comparing a car tyre with motorcycle tyre. There is already a debate going on that whether aquaplaning occurs or not for a motorcycle tyre at the sort of speed we drive our motorcycles in rain. I agree with your point that tread depth is necessary to avoid aquaplaning.
What creates the grip, the tyre surface which is in contact with road or the tread groove? Its but obvious the tyre surface. So the quality of tyre surface in contact with the ground is more of prime importance than the tread depth. My Apache RTR180's tyre has more or less equal tread depth with R15's Rear tyre. Yet we all know that R15 rear tyre grips better inspite of it being a 100x17 tyre as compared to 110x17 for RTR. So it proves that a tyre compound matters more than tread depth practically.
Now if you compare two tyres having the best wet compounds with smaller and larger tread depths you might be right. But In India the problem with less wet grip of tyres is more to do with the tyre compounds rather than tread depths (I am talking here about new tyres only). Because this affects our tyre selection decision.

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Sorry I dont have the tyre sizes with me. I just saw them in real. They are not exactly like a motocross tyre but with very big buttons spaced well apart. The tread depth was also somewhere around 8-9 mm plus.

Re: Tyres

Need help for my Leh ride... My R15 tyres(stock) are almost 12k kms old and will need replacement in another 2-3K kms. Now stock tyres are of no use in gravel and muck. Which tyres should I choose for this ride considering I ll ride on highways for 4K Kms and off road for 2k Kms. For rear tyre got "100/90-17 ceat vertigo" as an option. August 9th starting from Hyd. Will face rains on the way.... It is not a spirited ride... so my major concern is Leh terrain. Any recommendations.

Re: Tyres

You already got the best tyre for Leh and on-road too. For front I think you can stick to the stock tyres. If its worn out replace it with a new one. Ride safe. One tip: Buy a pair of GumBoots it really saves a lot of trouble in Leh.Pls take it offline if you need any other information than tyres.

Re: My learnings:

So here are the salient points important for us:
1) First I apologize for putting down few points without doing a proper indepth research (balme it to the lack of time and laziness ). I had directly/indirectly stated that for deformable bodies like rubber the friction is also dependent on area due to the simple logic that more the area more the asperities (refer my earlier post for its meaning. ). Its true and I am not wrong completely but the contribution due to this factor is marginal and for all practical purposes it can be neglected.
2) So now what dominates the rubber and tarmac contact? Well the ideal friction laws still hold good here. Frictional force= Coefficient of friction x Weight of body.
3) To make things more complex Coefficient of Friciton of Rubber and tarmac changes with respect to pressure. ( I would not like to go into the details now.)
4) If you increase the area of contact by a wider tyre, you also landup reducing the pressure on the contact patch as Pressure= Force/ Area. So the benefits of a wider contact patch is lost because of reduced pressure on the contact patch. This is proved by the research that snow tyres are made less wide to increase the pressure at the contact patch and thus compacting the ice for a better grip.
5) Rubber tyre friction depends on Normal laws of friction, adhesion and rolling resistance. The stickiness of the rubber compound to the tarmac will determine the adhesion.
6) For wet grip its not that only a soft compound will give more friction. Silica (sort of refined sand) is added to the tyre compounds to enhance its wet grip but it reduces other desired properties (dry grip and rolling resistance) of a tyre and hence its a well balanced trade-off. Refinement of silica also plays a major role in enhanced wet grip and so using just any silica sand doesnot help. Cost involved in refinement of silica raises the cost of tyre.
7) The more the depth of the tread grooves (not necessarily the width of the tread groove) is better for pumping water out of the contact patch and thus increasing wet grip.
8 ) Wide tyres have more probability of acquaplanning at least in cars.
So to sum it up its not necessary that a wider tyre will provide more grip than a thinner tyre.
Then why do we have wide tyres and what are the benefits of wide tyres:
1) To increase structural strength of tyres for higher pay load its required to increase the width and other dimensions.
2) One more aspect of having wide tyres is that the manufacturer can add more rubber to it with a softer compound and this extra rubber increases the wear life of the tyre. Otherwise thin soft compound tyres will have worn out easily leaving very less useful tyre life.
3) Wider tyres with higher ply ratings can take up more higher loads.
4) Wider tyres ensure that even in the worst conditions we have some rubber left on the ground.For eg. a tyre going have the way over the curb end. A motorcycle tyre in a high inclination lean.
So practically whats left for a common man after understanding all this tyre gyan:
1) Simply nothing.
2) A buyer can not by anyway understand whats the compound of the tyre and whether its good for wet or dry grip. We can get a vague feeling of the softness/hardness of rubber compound by piercing our nail on the tyre tread and looking for the depth and time required for the tyre to fill it up. But though the rubber may be soft it still may not be the best compound for a wet grip.
3) So we have to bank upon the tyre manufacturers and the actual tyre users ( although they too are vague in their predicaments).
Sorry to say but whatever the tyre study I have done till now has hardly helped me enough to choose a on-road tyre for my requirements. So again the saying " To experience heaven you should die first"
PS: I have recently bought a new tyre for the rear wheel of my Apache RTR180.You can soon expect a review for the same.
Disclaimer: All the above points mentioned above is the amalgamation of my research on internet and my engineering common sense which might be not perfect

Rear tyre for Honda Unicorn and complete set for Karizma R

Hello guys,

I am looking for a new set of tyres for my Karizma R. Can I get tubeless ones? I have started touring again and want to minimise the chances of punctures. It rains a lot in this area and the roads are pretty bad. Will the tyres of Karizma ZMR be ok as they are of same size? Are there other better tyres available for my motorcycle?

A friend has a Unicorn and wants the best possible rear tyre. Can anyone help him out as well??

Thanks in advance. Your help will be appreciated.

Re: Rear tyre for Honda Unicorn and complete set for Karizma R

Any suggestions for Avenger 200?
Some suggest 140/90.
Is that right?