Author Topic: Car tires on motorcycles  (Read 30639 times)

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Offline David_Clancy_ON

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« on: July 20, 2009, 03:26:00 pm »
There is a thread on FJRforum.com (I own a FJR)where some owners are claiming they are successfully using Auto tires on their bike. I suggested this was not safe and that someone saying it's OK because they did it, implicitly recoomending it to others, was specious and irresponsible. For which I was generally shat upon.     Does anyone know of a credible source for actual information on why we need motorcycle specific tires and the safety of using auto tires?  
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Offline Rev Ryder

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« Reply #1 on: July 20, 2009, 04:34:00 pm »
What!!! Someone using a car tire on a motorbike?  How... how... how crazy is that?    Actually it's been a topic of discussion for several years on a number of forums so far.  I HAVE NOT TRIED IT, though I've thought about it some.  I do not know of ANY "credible sources" for information saying there are reasons for motorcycle tires being necessary to be like they are.  However, there are gobs of opinions virtually all coming from folks who haven't tried it.  There are also gobs of opinions and videos and pictures of folks who are doing it as we type.  I haven;t heard of any horrible things happening to anyone running a car tire yet (well, maybe one), but I hear of folks crashing on moto tires everyday. I expect that given some time we'll get enough info (thanks to brave souls who were not afraid to risk life and limb and eternal salvation to prove the roadworthiness of car tires on a bike) so that we can make a good decision.  But ny favorite saying is, "It'll never work Orville."  After all, bicycles weren't designed to fly either.    I seriously doubt that those guys running car tires successfully are hoping to get folks killed and I must assume that they are able to fulfill their own riding desires while using these tires.  But that, of course, does not mean that you or I could.    I am neither PRO nor CON about car tires and hope that no one is hurt or dies because their use is unsafe.  However, I am not one to ever stand in the way of those who dare to dream big dreams.  I even heard that that movie of guys going to the moon made in New Mexico might have really happened.  Go figure.      
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Offline Pastor Andy

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« Reply #2 on: July 20, 2009, 04:43:00 pm »
I have a pretty good prayer life.  no need to increase it by using a a car tire on a motorcycle.  To me this is more than a bad idea....it's an incredibly bad idea.  98 Windsor Green Connie  13k  COG #8566  AMA #1084059
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Offline Cap'n Bob

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« Reply #3 on: July 20, 2009, 04:48:00 pm »
This topic tends to generate strong opinions. It rates right up there with oil and tire threads. I guess I'll just grab some pop corn and sit back.    Bionic Bob  COG & AMA member  First C14 CDA member #0220  2008 C14 & 2003 Mean Streak  

Offline Greg Habel

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« Reply #4 on: July 20, 2009, 06:29:00 pm »
We have a COGer who has already tried it.    Check this posting out: http://www.cog-online.org/clubportal/mboards/viewmessages.cfm?clubID=1328&Forum=1406&Topic=11378&keywords=car%20tire    Greg H from Mass, Connie Droppers Anonymous Awards Dude  COG# 7010,a Tracey  CDA 120 (2.0)  99 Connie "Herrin Christabelle", 05 Ninja 250  
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Offline Zorlac

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« Reply #5 on: July 21, 2009, 07:35:00 am »
I suggested this was not safe and that someone saying it's OK because they did it, implicitly recommending it to others, was specious and irresponsible. For which I was generally shat upon.    Everyone's entitled to their opinion and any information garnered is worth every penny you paid for it.  There are almost 10 FJR's with CT's on them over there and none have come back and said "Wow, this thing sucks, I almost crashed and died, I'm taking it off!" so I guess it can't be all that bad.    If I could put one easily on my stock C10 rim, I'd give it a shot, but would strongly suggest that no one else try it cause it's like running with scissors.    
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« Reply #6 on: July 21, 2009, 08:16:00 am »
:::but would strongly suggest that no one else try it cause it's like running with scissors. :::      Hey, My Indian name is "Runs With Sissors"!  Careful where you tread fella.... ;p  http://millerized.com/pegs  I'll be in the garage  COG 6425, CDA 111 a through g  

Offline Paulie

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« Reply #7 on: July 21, 2009, 10:15:00 am »
Quote
 We have a COGer who has already tried it.    Check this posting out: http://www.cog-online.org/clubportal/mboards/viewmessages.cfm?clubID=1328&Forum=1406&Topic=11378&keywords=car%20tire  
   Ya, Dan has more Conc miles & experience most everyone here. Lessee, believe someone like him who's BEEN THAR DUN THAT ...or... one of the naysayers that HASN'T.    Wow, that's a tuff one. I'm stumped!  01 Conc, Mijami Floriduh  OTP 06: http://tinyurl.com/2vk9o2 route map: http://tinyurl.com/4p7pmd  

Offline David_Clancy_ON

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« Reply #8 on: July 22, 2009, 11:33:00 am »
......Does anyone know of a credible source for actual information on why we need motorcycle specific tires and the safety of using auto tires?.....    I'm sure dandeman is great rider and can ride my wheels off on any tire. Same for other darksiders. BUT I'm not looking for anecdotal stories.    What I have not been able to find is SCIENTIFIC, MATHEMATICALLY SOUND surveys and ananlysis. Where can I see a published university research paper on motorcycle tires or industry publication on the matter?    Please don't tell me about ten guys you know who are darksiders or that you have never heard of anyone getting killed on those tires. However, if you know where I can find the requested information I'd appreciate it.    
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Offline Zorlac

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« Reply #9 on: July 22, 2009, 12:44:00 pm »
Why, do you intend to actually mount one if you can read the right white paper?      
« Last Edit: July 22, 2009, 01:15:00 pm by Zorlac »
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Offline Paulie

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« Reply #10 on: July 22, 2009, 01:40:00 pm »
I'll go out on a limb & take a SWAG what that ofishul paper will cornclude:    Stay offa all them murdersickles. Thay'll keel ya, durn tootin!    Or thereabouts.  ;)  01 Conc, Mijami Floriduh  OTP 06: http://tinyurl.com/2vk9o2 route map: http://tinyurl.com/4p7pmd  

Offline 2linby

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« Reply #11 on: July 23, 2009, 12:24:00 pm »
David,    All kidding put aside you will not find any paper of the sort your are looking for.  The time effort and money required to write such a study would be required substantial funding by a reCOGnized research group and giving the application I seriously doubt anyone would pick this one up. More money is and was spent on behalf of the cotton growers industry on researching why men in the north worn pajamas more than men in the south.    Right now there is only, as you say, anticdotal research, documentation and evidence. But the ones doing it are bona-fide experienced riders with much skill and intelligence to undertake the task. And although the write-ups and individual research is not certified by an academy or an institution they are thorough and well thought out. Even with a "official study" I doubt too many people would undertake the change, more due to misconceptions or inability to do the modifications required.    For now I'll stick to MC tires, but I do applaud the efforts of these guys as this is innovation in the making.    AKA "2linby" That's 2-lin-by folks!  Northwest Area Director  COG #5539  AMA #927779  IBA #15034  TEAM OREGON MC Instructor    http://community.webshots.com/user/2linby  http://tinyurl.com/njas8 (IBA BunBurner Gold Trip)  http://tinyurl.com/lwelx (Alaska trip)  
« Last Edit: July 23, 2009, 12:27:00 pm by 2linby »
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Offline Zorlac

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« Reply #12 on: July 23, 2009, 02:13:00 pm »
why men in the north worn pajamas more than men in the south.    Bob,  I really don't want to know why a guy's wearing the knees out of his PJ's but if if you meant "wore", well, that's easy, cause it's hotter in the south!  :p        
« Last Edit: July 23, 2009, 02:13:00 pm by Zorlac »
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Offline danodemotoman

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« Reply #13 on: July 30, 2009, 07:47:00 pm »
 MORE TRACTION IN ALL CONDITIONS AND ATTITUDES   That's what I'm talking about!  

Offline David_Clancy_ON

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« Reply #14 on: September 18, 2009, 04:24:00 pm »
Dave,    Bridgestone certainly does NOT recommend using passenger car tires on motorcycles. Following is an excerpt from our data book:         NEVER MOUNT PASSENGER CAR TIRES ON MOTORCYCLE RIMS.     Mount only
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Offline NCDave

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« Reply #15 on: September 29, 2009, 07:38:00 pm »
oh heck...it's just not worth the words.        
« Last Edit: September 29, 2009, 10:41:00 pm by NCDave »

Offline David_Clancy_ON

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« Reply #16 on: October 09, 2009, 10:04:00 am »
PS It's illegal in Ontario.    If you're in a situation when a sharp eyed police officer or insurance adjuster notices a car tire on your bike, it will likely be really expensive.    Maybe it's just not worth the money :p  
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Offline danodemotoman

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« Reply #17 on: October 11, 2009, 12:51:00 am »
 I shat on Ontario.  

Offline Zorlac

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« Reply #18 on: October 13, 2009, 12:54:00 pm »
Ummmm, are you trying to convince Us, or yourself?  :confuse:    As to the legality in Canada, don't you guys have a "stunting" traffic law that can result in a $10,000C fine?  I just don't like the Govt being quite that far up my posterior, JMHO  ;p  
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Offline Robert_Elliott_GA

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« Reply #19 on: October 13, 2009, 02:12:00 pm »
Saw a news article the other day where they fined a trucker for smoking in his truck.  Charged with smoking in a workplace.  That's government regulations going too far.  http://www.reuters.com/article/oddlyEnoughNews/idUSTRE59855D20091012      
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Offline conando

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« Reply #20 on: October 13, 2009, 04:34:00 pm »
Quote
 I just don't like the Govt being quite that far up my posterior  
   Ontario = ouch!  Where do I find a rear guard? I could sell a lot of them up here!    BTW I recently saw a Triumph Rocket III and a Honda VTX 1800 with car tires in my butt unfriendly province. I know one of them, but I saved my breath since he gets 45000 miles out them or so he says.    Car tires belong on cars. They were designed to go on cars. A person who puts cars tires on a motorcycle wouldn't argue over the fine differences between various bike specific tires because they wouldn't be able to tell the difference, either that, or they are too cheap to buy real motorcycle tires. Tires manufacturers have spent a lot of time, energy and money coming up with bike specific tires that are racetrack proven. If you want to drive your bike like a car or just save money, put car tires on them. I ride (not drive) a bike. Another thing, I can tell when my rear tire squares off and I don
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Offline Greg Habel

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« Reply #21 on: October 13, 2009, 05:57:00 pm »
Guys and gals, moderator Greg here...  Please, easy on the political digs/bashing (Ontario, etc).  We've tried hard to keep them out of this forum.  So far we've been pretty good but once it starts...    Now back to tire talk!  Greg H from Mass, Connie Droppers Anonymous Awards Dude  COG# 7010,a Tracey  CDA 120 (2.0)  99 Connie "Herrin Christabelle", 05 Ninja 250  
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Offline danodemotoman

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« Reply #22 on: October 13, 2009, 10:45:00 pm »
Which motorcycle tire brand and model other than what came on the C10 bike does Kawaski offer on a 'white paper' with proper engineering support?   Show all the documentation of available tires for the bike that Kawasaki approves of.   Which motorcycle tire manufacturer will recommend a tire that is more economical than their own?   Some of these type of questions asked on a ct are ignored when shopping for MC tires? Yes.   A ct capable of supporting the side stress of a multi thousand # weight of a car leaning into a turn won't support another vehicle weight a fraction of that?   I totally understand anyone who chooses their tire for their reason. I don't have to agree or disagree.   Be it their choice.   But don't make up tire criteria for the choice against one that is not used in another choice.   Again, my personal results based on an experiment exceeded my expectations on traction in all conditions and attitudes'. The increased value of miles per dollar is an added incentive not the the major decision.   I don't care if no one else uses a ct on a C10. I post my experience riding, maintaining and upgrading my mount like many others. I don't use many of others  choices.        
« Last Edit: October 14, 2009, 01:46:00 am by danodemotoman »

Offline 2linby

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« Reply #23 on: October 13, 2009, 11:09:00 pm »
I've come to the personal conclusion that if the tires are black and round, I'll try them.    This has been my Connie tire journey so far:    Dunlops 700 series  (Severe cupping and rear squaring off)  Dunlops 205 series (2 sets) (Severe cupping on front only)  Metzler ME880 (Too tall, too slow in corners & they ride like freaking iron!)  Michelin 89X (front only) (one of the best ires evern made for the Connie)  Michelin 90X  (set) (One of the other best tires ever made for the Connie)  Michelin 100X (set) ( THE best tires ever made for the Connie -Bite me Michelin for discontinuing them!)  Avon 45/46 series (two sets)(very nice handling but at the cost of wearing out too quickly)  Michelin 50 bias (front only)(so far so good! currently on the bike)  Chen Shing (rear only, twice) (Cheap, but mileage so far very good first one over 12K)    I don't advocate Dan's choice, and probably won't do the same, (but you never know) however there is ample evidence with the Connie, FJR's and Wingers that the choice of a rear CT is beneficial if not desirerable.    So whats wrong with Ontario?? Never been there........    AKA "2linby" That's 2-lin-by folks!  Northwest Area Director  COG #5539  AMA #927779  IBA #15034  TEAM OREGON MC Instructor  133K and counting!    http://community.webshots.com/user/2linby  http://tinyurl.com/njas8 (IBA BunBurner Gold Trip)  http://tinyurl.com/lwelx (Alaska trip)  
« Last Edit: October 14, 2009, 02:09:00 am by 2linby »
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Offline danodemotoman

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« Reply #24 on: October 14, 2009, 10:35:00 pm »
 Is Ontario where Jeff had his 'spensive Valentine radar detector confiscated during a stop?   I am not bashing... you can have one if it is not turned on per Jeff.