Author Topic: Just curious, anybody go back to 50-series rear tire after trying the 55-series?  (Read 1744 times)

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Offline Charliedog

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I realize the 55-series rear tire is popular, and that was what was on the 2013 when I got it used last fall.  I stayed with the 55-series when I replaced the tires this spring.  When I rode to Austin this past weekend I planned my gas stops-station to station.  Pilot Truck Stops that were 222 miles apart according to Google maps came up about 213 miles apart according to the bike.  I makes me wonder if the taller tire is throwing off the odometer.  The speedometer was right on according to my GPS, so that cannot be coming from the rear tire.  I think for my next set of tires I'll go to 50-series.  So, has anybody gone back to a 50-series rear tire after trying a 55-series?   

Offline scooter trash

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Yes, ran a 55 on PR4-GTs for the first tire change. Since then, have been through about nine sets of 50's and wont go back to 55's. Its a personal preference but without starting an argument with anyone, there is no benefit to me or the bike for running 55's. Good luck with whatever you decide to use!

Offline Red Fox

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Yes I went back to 50's after a 55 to get slightly better foot ground contact at stops and during pushbacks. 


The speedometer was right on according to my GPS, so that cannot be coming from the rear tire.

Your speedo / odo variances are consistent with tire size changes, imo. 
Speedo reads high with stock tires, which is true of almost all MC's that I 'know of.' 
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Offline Daytona_Mike

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I went back to a 50 after trying a 55.  I like the  handling of the shorter sidewall and the more rounded profile for a bigger center contact patch and how a more  rounded profile comes back up out of a turn exactly how I rolled down into a turn...like rolling in and out of a turn on a basket ball.

My history with my C14 is different than most otbers have experienced. I would not ride or enjoy riding my C14 for about a year after buying it because I disliked how harsh and rough the stock shocks were. I also had to 'hold ' the bike down in a turn..and it would pop right back up on its own.  Yuk!  My modified C10 handled and felt better...not as fast but still...better

Then I installed AK20's and and Ohlins (with new springs to match my weight) and had a suspension guru adjust and set up my chassis geometry/sag for my weight. Wow!! Now I love my bike..rolls into a turn and rolls back up...no 'falling ' into a turn..no popping back up ..it stays right where I put it ..perfection.

Then I tried a 55. Dam bike falls into turn..easily..too easy..because now with the 55 I have to bring the bike up out of the turn...it does not roll back up..the bike wants to stay down in a turn.Yuk!

So bottom line...If we dont adjust the bikes sag settings for our weight..or we dont know how..or we just  dont want to..than we are the people who like 55's because all we are doing is raising the rear of the bike upwards so it falls easier into a turn.

I prefer getting the chassis gemetry correct and riding on the better profiled / smaller sidewalled  tire..the goal is for the bike  to be neutral when rolling in and out of a turn and not to fight it one direction or the other. ...
One way or the other..we both want the same results and there is more than one way  to get there.
« Last Edit: April 20, 2019, 04:21:11 pm by Daytona_Mike »
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Online Sailor Rich

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I also went back to the 50, I found better seat angle for me and much better front tire wear and milage. The last 3 sets I've run are the Continental Road Attack 3's. Love them for a cold weather tire. If I need quicker tip in it's trail braking for me.

Offline lather

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I tried one 55 and went back to 50. I did not notice any difference other then the speedometer and odometer. Went back to 50s as they were less expensive.

Offline Tundra

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I have not switched back, because I never went to a 55 in the first place. I would not even attempt 55 series because I do not care for any additional height. I prefer to leave the geometry of the motorcycle as set by mother Kawasaki.
  I'm sure that many do it and prefer it, and that's fine... just not for me.
« Last Edit: April 22, 2019, 09:22:49 am by Tundra »

Offline luv2fly

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Yes I went back to 50's after a 55 to get slightly better foot ground contact at stops and during pushbacks. 


This.  I thought the 55 corrected the speedo??  But, I lost a bit of footing.  Not a deal breaker, glad I tried it, but I'll go back to the 50.
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Offline gsun

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I won't try a 55 as I spent so much time and effort to lower the bike - lower links, raised forks, custom lower seat, lower pegs, short side stand and now I can flat foot. I am inseam challenged so I'm good with the 50.

Offline DarenLine

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Old topic, but wanted to share my opinion. I switched my tires from 50 to 55, immediately felt the handling improvement. The weird feedback from the pavement uneven surface disappeared, and the push back of the bars in a turn was non existence. Long story short I sold the bike to fund another bike, and ended up buying another 2013 C14, as soon as I test rode the bike it reminded me the 50 size tire of my  previous C14, sure enough the bike Did have size 59 tire. I will change it to 55 when the time comes, the most irritating characteristic of the smaller tire is when lane splitting, as you go over white street lines and square reflectors the bikes shows a tendency to surprise you by jumping left or right abruptly, making me to hold on to the handle bars with extra pressure. For this reason alone I’m willing to switch to 55.

Offline Christopher

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I switched to a 55 and definitely noticed it cornered better due to rear height coming up a bit. Might switch back for chits n giggles for a comparison. Someone mentioned why mess with what mama Kaw put on the bike.. I wondered...when the ZX14 came out prior to the C14 was a 55 series tire even available for them to use? Maybe that's why the 50 is on there and they just never bothered putting the 55 on. The current ZX14 still has a 50 and obviously ours as well. It works, why change it? Again, just a thought.

Ride safe
Chris :-)

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I'm probably going back to a 50 soon.
The tire I want to try is not available in a 55.

Ride safe, Ted
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Offline 1965soda

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Not sure if this will be helpful but I have a few thoughts to share (and I don't want Ted to have the last word  ;))

I tried the 55 series tire and although I enjoyed the benefits noted above, I have gone back to a 50 series.  Here are a couple things to keep in mind;

  • Regardless of 50 or 55 series, when you switch from a worn tire to a new one....the handling/corner tip-in/resistance to follow pavement grooves/etc. will be improved
  • Varying brands of tires, even in the same size can result in minor differences in dimensions/profile/handling characteristics
  • Depending on your riding environment and bike usage, using a 55 may provide less overall mileage

My story: I switched from Pirelli Angel GT's in a 50 to a 55 and liked the improvements but quickly found the 55 series started "squaring off" more quickly than the 50.  If you live in an area where great roads are in your back yard and spend a lot of your time carving corners...the 55 may be a great choice.  In my case, I have at least a half to a full days ride to get to fun roads and use my bike for commuting so the 50 series was a better fit for me.

Hope that helps!
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Offline Kzz1king

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Thanks 1965 Soda.I have gone back and fourth between the 2. Unfortunately most of my riding is on the curve less plains. I have a Roadsmart 3 in 55 that is squaring off with 5000 on it. Was really hoping it was the tire that would give me 8,000. Next one will be a 50.
Wayne

Offline khager01

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I also went back to the 50, I found better seat angle for me and much better front tire wear and milage. The last 3 sets I've run are the Continental Road Attack 3's. Love them for a cold weather tire. If I need quicker tip in it's trail braking for me.

Funny I have thought about this as well.  My front tire wears faster than my rear.  After 2 sets of Angel GT's both 55's the front wore out faster, 1 set of PR4GT's also a 55 the front wore out slightly faster.  The OEM's  50 the rear wore out first IIRC.  Never had a bike where the front wore out faster than the rear.

I was looking at the new Continental Road Attack 3 GT's and found out the rear only comes in the 50's and was going to pull the trigger till I found out the 190/50/ZR17 was not available yet and I needed the tires now, so I went with another set of PR4GT's but next time and it should be in less than 6 months I am determined to try the CRA3 GT's in the 50' size hoping I can get some more wear out of the front.
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Offline rogracer

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I would be concerned that the change in rotational wheels speeds would confound the traction control ans ABS calibration. Some may argue it isnt significant, but I would think it has to have an effect to some degree.

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A tire diameter/height changes as they wear, and the Traction/ABS has to work as that happens.
 For that reason, the slight change from going to 50 or 55 is accounted for.

NOTE: Most think the change in handling with a 55 is because of the different height.
          I've posted that the change was because of the different/rounder tire profile.
          Good to see others posting the same thought in this discussion.

Ride safe, Ted
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Offline rogracer

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There is about a 3% difference in rolling radius between a 55 and 50 series...or about 12/32 of an inch, which is far more than what wear will give you.  But in any case, the error from the aspect ratio change is additive to the error from wear, so wear can just make things potentially worse.  Now I'm not saying that this 3%+ change is significant on the Concours, as I have no direct experience, but is sufficient to at least consider as a potential issue.  There are track bikes out there that this much change  does cause problems with the stability software. 

Offline Charliedog

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I have now put about 1000 miles on the RoadSmart III's, 50-series rear, and I can say I love 'em.  The bike feels more responsive both in acceleration and handling than it did with the 55-series Avon Spirit tire that was on it.  Yes, the speedo is now 2 mph optimistic at 60, but that is no big deal.  I wonder if the odometer will be closer to accurate now also.  I felt it was pessimistic before.       

Offline gpd323

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Yes, I am going back to the 50 series tire. Front and rear Avon Spirit is 243 shipped.

https://www.americanmototire.com/

I currently have 4100 miles on this set, one more trip to Oregon Coast and they will be shot.

I figure, under 5K miles. the fronts already are worn on the sidewalls. Some tread left but after this they are coming off.

This is about what the RS 3's gave me. Will buy what ever tire set that is less expensive,
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Offline RoadKillHeaven

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Has anyone done tire stretch on rear wheel of C14?
I am not trolling.
I ask a legit question...

Offline Grasshopper

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I tried the 55's and went back to the 50. Flatter foot on the ground when stopped and it seems to corner better, plus they are cheaper. Just ordered another set of the Avon 3D-XMs with the 50.

Offline Bud

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Has anyone done tire stretch on rear wheel of C14?
I am not trolling.
I ask a legit question...
I'm not familiar with that term.  Could you elaborate further?
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Offline freebird6

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I am on my 3rd set of 55s but I am seriously going back to the 50s for the contact patch and the fact that 90 per cent of my riding in IN IL OH and MI is on flat a** roads with no curves to speak of. I  had a couple of the 55 rears wear out in the middle a little earlier than I would like. Huge Chicken Striops because the nearest curves are 4 hours away. I like the height as with the Seth Laam giving me a bit of height I find comfortable but I will take the 50s and maybe enjoy a little more road contact and mileage.

Offline Daytona_Mike

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Has anyone done tire stretch on rear wheel of C14?
I am not trolling.
I ask a legit question...
I'm not familiar with that term.  Could you elaborate further?
It is  where you put a tire on a much wider rim then it was meant for.
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2008  C14 Silver Dammit Full AreaP- Flies are put back in SISF_Flash
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