will a 190/50 (55) fit a FJR

[Bob Atkinson]

I did a search with no Luck. Will either work? What is the change in handling? the 55 is taller right? Is the 190/50 about the same as the 180/55 in height only wider. What's the skinny on running either of them. Your help would be greatly appreciated.

Thanks

Bob

 

[Redfish Hunter]

I am afraid you did not search very hard. Look in "FJR Specific Discussion" and there are two threads dedicated to this subject on the first page.

Either will work. The 55 is taller. It changes the handling by raising the rear of the bike and sharpens handling.

 

[kamal]

Hi Bob.

Take a look here: https://www.fjrforum.com/forum/index.php?showtopic=148260

Al.

 

[vtwinn]

Yes ,

I've been running the 190/50 for a couple of months now, faster turn in , quicker transitions from side to side and more rounded profile so you have some rubber left when your pegs touch down. ( looks like bigger chicken strips)

 

[HotRodZilla]

Yes ,I've been running the 190/50 for a couple of months now, faster turn in , quicker transitions from side to side and more rounded profile so you have some rubber left when your pegs touch down. ( looks like bigger chicken strips)

Are you sure you're not running a 190/55?? Those that have mounted the 190/50 have, without fail, reported sluggish handling due to the wider profile tire with the same height ratio. The 190/55 is the one that is taller and seems to work very well.

 

[900gc]

Simple math; width x aspect ratio % = wall height.

180/55 = 99 mm

190/50 = 95 mm (.16 in. shorter)

190/55 = 104.5 mm (.22 in. taller)

percentage wise:

190/50 = 4% shorter wall than 180/55

190/55 = 5.3 % taller wall than 180/55

If my trig.calculations are correct ( after consulting my 7th grader ) the stock 26 degree fork rake and 109 mm trail become:

190/50 = 26.16 deg. / 109.73 mm

190/55 = 25.79 deg. / 107.95 mm

I'll count this post as my over 50 brain exercise for the day.

 

[vtwinn]

If the tires are mounted on stock 5.5 "rim,their profiles are slightly different from design.

That is why the 50 profile "feels "quicker to me.(YMMV)

 

[SLK50]

"Quickness" , in this case, is a result of the steeper rake and

reduced trail resulting from the taller tire.

It has very little to do with the tire's profile.

The 50 should feel much slower/heavier than the 55.

 

[wheatonFJR]

Simple math; width x aspect ratio % = wall height.
180/55 = 99 mm

190/50 = 95 mm (.16 in. shorter)

190/55 = 104.5 mm (.22 in. taller)

percentage wise:

190/50 = 4% shorter wall than 180/55

190/55 = 5.3 % taller wall than 180/55

If my trig.calculations are correct ( after consulting my 7th grader ) the stock 26 degree fork rake and 109 mm trail become:

190/50 = 26.16 deg. / 109.73 mm

190/55 = 25.79 deg. / 107.95 mm

I'll count this post as my over 50 brain exercise for the day.

...and if two FJRs leave the train station in opposite directions with tire pressures of 39/42 and 42/42 respectively, what is the average force on the slider of Bike #1 when it overcooks corner #7 on the Snake going eastbound, if ambient temperatures are 90 degrees at 10am and 95 degrees at 11:50pm., Part b... going westbound at corner #9.

Please provide answers in French for English units and SI units using the cyrillic alphabet.

Extra credit is given if use of the word "snarky" is given in the second answer of the first question.

 

[Dodahdude]

5%

 

[Richouse]

Is the bead on the 190/55 the same width as the bead on the 180/55 (from left bead to right bead)? I'm assuming its wider on the 190/55. If that is the case and you squeeze that wider bead on the same rim as the 180/55 was on its going to make the center of the tread bow out a little bit. Maybe not enough to see but it will raise the rear just that much more over the already taller tire, giving a crisper feel. Also, you are reducing the amount of tread that is on the ground when the bike is straight up and down, conversely, as you lean the bike over in a curve you will put more tread on the pavement. Sounds like a good thing right? Less rubber on the road in the straights means less drag and rolling resistance. More rubber on the road in the turn means more grip. There is a trade off though and it's more tire wear. You will go through tires quicker like this. Especially if you ride on straight roads. Less tire on the road while the bike is straight up will wear faster because there is less tire to support the amount of weight. I'm talking about the actual contact patch of tire that is on the road on any given time.

 

[gixxerjasen]

Is it quicker than your old worn out tire or quicker than a brand new same tire of different size?

 

[glory racing]

I now have a 190/55/17 as a stock size on a 6 inch rim.. Sure wish it was a 180...they are less expensive and easier to find. And in reality, the noticable riding difference in everyday real world is slight at best. The grass is always greener...