Squared tires

[Winston Smith]

As the tyre rolls the rubber block in contact with the road will grip. This will open the sipe and give the water somewhere to go into as the bow wave is created (remember this is happening in a split nano second!)
As the next block touches the road it will replicate previous block opening it's leading edge.  Obviously the rear edge will close squeezing whatever water is there either into the larger channels or backwards as the wheel rotates.
Channels alone wouldn't clear the water as well.  On the sides of the tyre there are alternate channels and sipes, staggered that lead into either another channel or a small circle.  When leaned over the water will dissapate in the sipes to the larger channels either toward the centre or out to the edge, alternately spredaing the water either way to ensure even dispersal and therefore even grip.

[viper]

Ride on more twisty roads. 
The other option is to change them to PR4 GT's 

debs , you are on fire today and I like it

[viper]

Not sure Id feel happy by taking a file to my rear tyre, just buy new, even good ones are not expensive

[STX1300man]

Another vote for PR4 GT tyres here. They are without doubt the best tyres I've had on a road bike. In the wet they give lots of grip and in all conditions they roll nicely into bends (no sudden changes of angle you get with some more triangular profiles). Compared with the stuff we had at the end of the 70s and early 80s modern tyres are an absolute miracle in design and construction.

Squared tyres will destroy confidence as they 'fall' into corners, however they can also come about due to a lack of confidence and keeping the bike upright all the time. A bit of chicken and egg (well almost). Incorrect tyre pressures can also square off tyres very quickly.

[Lonewolf]

So far I've only used the PR3's on a GTR and they do transform the bike. Give it a month or two and I'll be getting the PR4's GT for the Beemer. It's a no brainer!

[Debs]

debs , you are on fire today and I like it

It makes sense Viper.
Filing the tread down on the sides wont give you more tyre life. It will still wear down the middle.. The only way we can make them last longer is by doing some twisty roads.

[O.C.]

It makes sense Viper.
Filing the tread down on the sides wont give you more tyre life. It will still wear down the middle.. The only way we can make them last longer is by doing some twisty roads.

  never had 'chicken strips' on my tyres

[Lonewolf]

  never had 'chicken strips' on my tyres

People get too hung up on chicken strips, ride your own ride and don't worry about such matters. Enjoy the fact that your health is such that you can still ride and enjoy the freedom of two wheels.

[Winston Smith]

The expression Chicken Strips is so annoying.

It implies someone is 'chicken', a poor rider, lacking ability etc.

Look at chicken strips as your safety margin.

Once you run out of rubber you're off.  By having half a centimetre of rubber left on the edge you have some insurance if you have to 'push' harder through a bend (misread/tightens up).

[O.C.]

The expression Chicken Strips is so annoying.

It implies someone is 'chicken', a poor rider, lacking ability etc.

Look at chicken strips as your safety margin.

Once you run out of rubber you're off.  By having half a centimetre of rubber left on the edge you have some insurance if you have to 'push' harder through a bend (misread/tightens up).

Agreed, and thankfully it's not an expression originated up by me Chris, it does however provide/paint a picture of the outer area of a tyre that is generally unused   

People get too hung up on chicken strips, ride your own ride and don't worry about such matters. Enjoy the fact that your health is such that you can still ride and enjoy the freedom of two wheels.

A bit like 'laying a darkie' eh Steve    

[STX1300man]

Interestingly having gone from a set of PR3 to PR4 the amount of rubber used has diminished.

The PR3s were worn completely to the edge, whereas the PR4s have a 0.75cm area untouched around the edges. My riding style has not changed one bit and the bike is being leaned over just the same as before. It must be down to the slightly different profile.

[Lonewolf]

Agreed, and thankfully it's not an expression originated up by me Chris, it does however provide/paint a picture of the outer area of a tyre that is generally unused   

A bit like 'laying a darkie' eh Steve    

You can't say that, that's racist, I've told you about that before. There is no way you could come to Bradford and say that you've laid a darkie, you'd end up in A&E at Bradford Royal Infirmary and that's an experience in itself!!!

[O.C.]

You can't say that, that's racist, I've told you about that before. There is no way you could come to Bradford and say that you've laid a darkie, you'd end up in A&E at Bradford Royal Infirmary and that's an experience in itself!!!

  What are you telling me waiting times aren't less than 4 hours  for 95% of the visitors....blimey.......in North Yorkshire you can be seen within 15 minutes ......yeah right   

Actually myself and Geoff visited a friend in BRI only last month     

[tapps]

People get too hung up on chicken strips, ride your own ride and don't worry about such matters. Enjoy the fact that your health is such that you can still ride and enjoy the freedom of two wheels.

i 2 of my so called pal's keep on about my so called chicken strip's,in my case turkey strip's,i ride to the best of my ability,don't really care what other's think.i wouldn't want to end up in one of these 

[shaggs147]

Interestingly having gone from a set of PR3 to PR4 the amount of rubber used has diminished.

The PR3s were worn completely to the edge, whereas the PR4s have a 0.75cm area untouched around the edges. My riding style has not changed one bit and the bike is being leaned over just the same as before. It must be down to the slightly different profile.

Ahh so its not just me then