Hello all,

Browsing craigstlist today I found a set of brand new Michelin Pilot Power tires for sale for 100$. The Guy says he bought them and wrecked his bike before he had them put on.

Sizes are listed as "Front 120/70 ZR 17" and "Rear 190/50 ZR 17"

The front tire matches the listed spec for the 01 CBR 600f4i, but the rear tire doesn't. I'm not familiar enough with the tire numbering system to tell if it's a compatible tire or if it's the wrong size.

 

The rear is gunna be a little wider and I believe a bit shorts also. I'm not sure if it would fit but for 100 bucks you could always use the front and sell the rear to pay for stock size tire.

 

"Front 120/70 ZR 17" and "Rear 190/50 ZR 17"

this rear is 190mm x 50% of 190mm with a 17" hole.
So it is 190mm wide and 95 mm high


The standard tyre is 180mm x 55% of 180mm with a 17" hole
180mm wide and 99mm high

Personally I would go for it - if your hugger has 5mm clearance each side,

But remeber that you speedo will be out a little, about 4% faster.

Hope this helps

 

Does Size Matter

Squeezing a wide tire onto a narrow rim can be a big mistake. Here's why.
From the February, 2009 issue of Sport Rider
By Andrew Trevitt
Those low-profile 190-series tires sure look gnarly on the back of a sportbike, and we've seen them pinched onto all sizes of rims. But in reality, a 190/50-17 fits properly only on a 6.0-inch rim, and cramming it onto anything smaller severely changes its profile.

As an experiment, we mounted a 190-series Metzeler Rennsport onto our F4i's 5.5-inch rear wheel and took some measurements. Compared to the correctly sized tire on the same rim, the 190's profile closely matches the 180's near the edges of the tread, but is much lower in the center area-equivalent to about a 6mm change in ride height. Effectively, the wider tire will give more rake and trail when the bike is vertical, while keeping close to the original geometry when the bike is leaned over. Accounting for one (by changing ride height) will unduly affect the other.

Following our test with the Metzeler Sportecs, we slipped a 190/50 rear Sportec onto the F4i and rode a portion of the test loop for a practical comparison. With no changes to suspension or geometry, the F4i felt substantially different with the wider tire. With the bike straight up and down, steering was slightly sluggish in comparison, but just off vertical, the F4i was quite tippy and darted into corners. The light, neutral steering of the Sportecs was completely changed and the bike lost its balanced feel. The sensation was very much like riding on a tire squared off from too many freeway miles. At higher lean angles, performance was less affected, although making transitions from side to side was unpredictable. And, contrary to the popular myth that the wider tire puts down a bigger footprint and gives more traction, we felt no improvement in that department from the properly sized tire.

We've experienced similar changes with a 180-series tire on a 5.0-inch rim meant for a 170-series bun. Tire engineers work hard to design and match front and rear profiles for characteristics that we sometimes take for granted. Upsetting that balance is surprisingly easy and you should think twice before sacrificing your tire's performance for appearance's sake.


This story was originally published as part of the tire test in the June 2002 issue of Sport Rider.




Just a couple thoughts. But.... I'd buy the tires anyway. That's pretty dam cheap for a new set of any tires. You could sell the rear like Jay said or maybe trade for a 180.

 

Holy chit!!! i have 190 on my f4i!!!!

 

Thanks Wizard for the explanation, and thanks kilgoretrout for the explanation of why the size matters.

I think I'll pick up em and see if any of the tire shops in town will swap the rear tire for the correct size.

Thanks.

 

I think the one 90s cost a little.more so if.you offer them 20 bucks and the swap then they can't lose

 

And i was going to put to my f4i a 200 rear...yikes...