tyre profile

[Kozo]

Can someone explain to me what the difference in tyre profile makes on a bike ,expecially on a hayabusa.

[Kendo]

No short answer to that one Kozo. Different profiles effect the transition of the tyre from centre to edge when turning into a corner or from edge to edge when changing directions. Different profiles also effect the contact patch of a tyre at varying lean angles. Then you have to factor in different compounds.
Also aspect ratio changes of a tyre can also slightly change bike geometry.
Very generally speaking, quite often more sport touring oriented tyres have a more gradual profile and sportier/racier tyres often a peakier profile. This is not always the case though.
If you look at some of the major tyre manufacturers websites and read the technical blurbs it will give you some good explanations, but remember to filter out the marketing bs.

[PostmanPete]

All I know is that when I changed from a 190/50 to a 190/55, the bike turned corners easier!
It should change your speedo a fraz too, making it more accurate.

[cyndemgum]

Can someone explain to me what the difference in tyre profile makes on a bike ,expecially on a hayabusa.

I have found that the actual shape of the tyre makes a much greater difference compared to the stated profile. Have a look at a half dozen different brand 190/50s side by side and you will see what I mean. The differences in the steepness of the crown is quite apparent. The 190/55 PP3s are a weird looking thing fully inflated. The tallness of the tyre actually makes it look thinner and it has to be cranked over to buggery to fully utilise the slick portion. In answer to the original question run a less crowned tyre for more straight up riding and a more crowned tyre if you are chasing the twisties. Just what I have found, Paul.

[Tony Nitrous]

190/55 on my 02 Busa,
Had several 190/55's on my B-King (instead of the 200/50)
Soon to put a 190/55 on my GSX1400
(and it still needs slightly longer shocks)

Each to their own, but on a 6" rim they suit
my bikes and the way I ride.

[gringo]

If I ever get fully to the edge of my pilot roads I will consider changing to a sports profile but what's the point until then, I would be just wasting money wouldn't I.

[revhead]

pirelli coarsa blah blah,lol i run 190x50,love em the stick no slip or slide ,just fitted the new one today

[Tony Nitrous]

If I ever get fully to the edge of my pilot roads I will consider changing to a sports profile but what's the point until then, I would be just wasting money wouldn't I.

I don't get to the edge of mine either,
But I like the feel/turn in on the 190/55
every time I ride.

[Skidmarx]

i edge my power 190/50's, but i kill my boots on the road already, wouldnt want to get over any further

revhead, id still consider that old one a good tyre, has more tread than im used to :P

[revhead]

i edge my power 190/50's, but i kill my boots on the road already, wouldnt want to get over any further

revhead, id still consider that old one a good tyre, has more tread than im used to :P

for me thats called death!

[Ward P]

i edge my power 190/50's, but i kill my boots on the road already, wouldnt want to get over any further

revhead, id still consider that old one a good tyre, has more tread than im used to :P

I agree, from the photo it only looks about 1/2 worn, and hardly any wear on or near the edges where grip is most important. I change mine when the tread disappears, less tread = more grip. just don't ride in the rain.

[revhead]

i edge my power 190/50's, but i kill my boots on the road already, wouldnt want to get over any further

revhead, id still consider that old one a good tyre, has more tread than im used to :P

I agree, from the photo it only looks about 1/2 worn, and hardly any wear on or near the edges where grip is most important. I change mine when the tread disappears, less tread = more grip. just don't ride in the rain.

we have more highway patrol per ca-pita then anywere else in n.s.w so i change it bc they will book me then defect my bike ,plus its past the tread wear indicator

[Skidmarx]

i had to ride home on this after an all bike meeting, mid way home the flashers tried to pull me up for a quick chat, lets just say i didnt hang around, the old R1 went alright

[Shifu]

i edge my power 190/50's, but i kill my boots on the road already, wouldnt want to get over any further

revhead, id still consider that old one a good tyre, has more tread than im used to :P

Like you I use the 190/50 edge to edge on the road. 190/55 gives you an extra 4 deg of lean angle and on the road I am still 1/4 inch from the edge. On the track however it is a different story and all the way to the edge on 190/55 presents no challenge while on the 50 profile it easy to run out of the tyre. So in my opinion if you ride exclysively on the street 50 is the go unless you know the road is clean and willing to take the risk.

[revhead]

well who ever wants the old tyre il post at your cost.cheers