Interesting actual rear tire widths

[mountainmotor]

For a long time I have read here and elsewhere that the Hayabusa factory rear tire measures out to 198.0 millimeters .

Not so .

190/50/17 Bridgestone BT56 OEM = 187.96 mm

Get these though .

Dunlop Qualifier

190/50/17 195.326
200/50/17 195.834

Bridgestone BT014

190/50/17 standard replacement 187.96
200/50/17 195.58
190/50/17 2004 CBR1000RR 195.58

Michelin Pilot Power

190/50/17 195.326
200/50/17 Sport HPX 195.834

The dual compound Pilot Power 2CT is not being brought into the states this year for some reason so no sizing

 

[Gunnybusa]

That’s strange we have always been told that the OME 56 is 198mm.

 

[mountainmotor]

The Bridgestone and Dunlop measurements were on their respective websites . I called Michelin to get their specs .

What got me wondering as to how much difference there actually was between tires is when we had two ZX-9R's parked side to side , one with a Dunlop 208 - 190 rear , the other with the Pilot Power 190 .

The Dunlop looked more like a 180 in comparison so i got to poking around

 

[SPEEDEMON]

thats pretty interesting!
thanx for the info.

 

[mofuggahere]

I know when i went up to a 200 in the back from stock, that it looked a alot wider than 2mm.

 

[mountainmotor]

The Bridgestone BT020 200/50/17 is 200.66 mm

Finally found a 200 thats a 200

 

[05 Busa LE]

When at the dealer, gotta say that the Gixxer 1000's rear tire looked much wider than the 'Busa's. Maybe because it's more exposed by the high tail-end?

 

[Revlis]

Wrong, factory OEM BT56 "J" will measure out to 198mils. Big difference between the J and Non J spec rear OEM tires.

True Story.

 

[Gunnybusa]

Wrong, factory OEM BT56 "J" will measure out to 198mils.  Big difference between the J and Non J spec rear OEM tires.  

True Story.

and thats what I have been hearing as well.

 

[BusaWhipped]

Bridgestone and Dunlop make a standard and Hayabusa spec tire for the rear. I'd say those are the normal everyday tires for the lesser bikes.

 

[mountainmotor]

I just go by what Bridgestone says their tire widths are . They only make one 190 BT56 and it is the " J " spec with hayabusa listed out to the side for both front and rear sizes .

I thought it looked smaller that the Pilot 190 does . Probably why the 200's on the Busa's look larger even though they are not true 200's ...except that one BT020 .


Here you go , " J " spec BT56 . 7.4 inches wide = 187.96mm

It won't direct link though .

http://www.motorcycle-karttires.com/

Just don't shoot the messenger

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[Charlesbusa]

Here's the chart from that link.

It says tread width... not sure if that is the same thing as tire width.

 

[JINKSTER]

gee.....here's how i do it...

L8R, Bill.

 

[kkattan]

gee.....here's how i do it...

L8R, Bill.

Jinkster, i have the pilot power HPX on the rear and only have about 3mm space between the chain and the tire..

can you measure your distance please.

thanks.

 

[MN72Busa]

kkattan

Bro...bring that bike in to the dealer, and have em look at it!

 

[TorontoBusa]

Wrong, factory OEM BT56 "J" will measure out to 198mils.  Big difference between the J and Non J spec rear OEM tires.  

True Story.

What does the "j" stand for?

My understanding it has one extra belt inside the tire so it does not get out of shape @ speed.