Run Flat or Not to Run Flat that is the question.

Go down

Run Flat or Not to Run Flat that is the question.

Post  fatboy127 on Tue Aug 14, 2012 4:41 pm

OK.... I have recently mounted a Michelin Primacy Alpin PA3 205/55/16 on my 2011 Harley ultra classic. What I ordered was the Primacy Alpin PA3 ZP. I am satisfied with the way it rides and handles. HOWEVER, it was suggested to me to run the ZP. Which, by the way, are discontinued. The guy who monted my tire is looking for one and thinks he has found one. BUT.... before I mount it up I want some feedback on why OR why not to run the run flat. I am interested in the opinion of those who have run both. Thank you in advance for your input!!!!

fatboy127

Number of posts : 4
Location : Green Bay Wisconsin
Registration date : 2012-06-25

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  robw on Tue Aug 14, 2012 9:55 pm

Here is a copy and paste from one of my earlier posts.

Here are my thoughts on run flats. I'm not a tire engineer.
A runflat tire is safer because it allows you to maintain control to get slowed down and off the road. Although a TPMS system is advised I don't use one. As with any tire I've had on my bikes I can feel a difference in the ride when the tire is low. I check my tire pressures daily and carry a small 12 volt compressor while on the road. I've never heard of a runflat on a bike that blew up suddenly or disintegrated suddenly. I've heard of people riding up to 300 miles on a flat and the tire was coming apart when they finally discovered it but the main point is the tire stayed on the rim and they made it home. I don't believe a non runflat would do that.
After my first runflat wore out I tried a little experiment. I deflated the tire and went for a ride. At slow speeds the bike wobbled a bit but I had full control even in turns. Straight line on the highway the faster I went, the less noticeable the flat was. I am guessing this is because centrifugal force had something to do with it. I took it up to 65 mph. I rode a total of 40 miles with no adverse effects.
Granted this was done on a GoldWing so I can't comment on any concerns like belt clearance and wheel design as far as the bead goes.
avatar
robw

Number of posts : 85
Age : 64
Location : Sierra Vista, AZ
Registration date : 2009-01-17

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  quadancer on Tue Aug 21, 2012 9:28 pm

What are you calling "full control"??? Do you RIDE the thing or are you generally flower sniffing in the curves? I sure hate to be the one to find out that
my peg-draggin' funday is sliding me down a ravine because i didn't know I was riding on a flat! I think you've given bad advice, even if you personally
haven't heard of one blowing out.
I do think you have a leg up though, checking pressures daily; most don't.
avatar
quadancer

Number of posts : 1245
Age : 64
Location : Acworth, Ga.
Registration date : 2010-05-02

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  robw on Wed Aug 22, 2012 12:20 am

Full control is just that. I was able to keep riding the bike in curves without the ass end wallowing around. I was able to stop the bike from 65 MPH with no problem. I've had flats on regular MC tires and the bike wobbled so badly I went down before I could get it stopped.
All I'm saying is whether I am riding agressively or not I would rather have a runflat beneath me for the stated reasons. Like I said people suggest a TPMS so you have some warning of low tire pressure.
The guy asked for opinions and I gave him mine. Maybe when you get some experience you can offer him yours.
avatar
robw

Number of posts : 85
Age : 64
Location : Sierra Vista, AZ
Registration date : 2009-01-17

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  quadancer on Wed Aug 22, 2012 9:51 am

The experience I mentioned is the one I'd rather not learn by.
avatar
quadancer

Number of posts : 1245
Age : 64
Location : Acworth, Ga.
Registration date : 2010-05-02

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  Rocky_Mtn_Sly on Thu Aug 22, 2013 9:23 pm

Have run both on the back of my Wing (Michilen Aplin Pirimacy....? spelling) I've run the R/F in 195 and the non-R/F in 205. The only difference I could tell was in the 10mm width difference.

I'm not going to ride a 1,000lb motorcycle with a flat tire so it didn't matter to me which one I went with. Just tried both for kicks. Got 20,000 miles from each.

Double Dark for Life.

Rocky_Mtn_Sly

Number of posts : 5
Location : 303 in the Rockies
Registration date : 2013-08-22

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  quadancer on Fri Aug 23, 2013 7:53 am

One of these days, someone is gonna design a stem cap with an adjustable pressure sensor - like you'd maybe twist a ring around to your preferred
pressure, and if it drops below that, a red indicator would show up? That would be killer.
avatar
quadancer

Number of posts : 1245
Age : 64
Location : Acworth, Ga.
Registration date : 2010-05-02

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  ranger351w on Fri Jul 03, 2015 5:04 am

quadancer wrote:One of these days, someone is gonna design a stem cap with an adjustable pressure sensor - like you'd maybe twist a ring around to your preferred
pressure, and if it drops below that, a red indicator would show up? That would be killer.

That would be great wouldn't it?
thumbup

ranger351w

Number of posts : 49
Location : Eddyville Ia.
Registration date : 2011-04-05

Back to top Go down

Re: Run Flat or Not to Run Flat that is the question.

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum