Author Topic: Car tires on motorcycles  (Read 30241 times)

0 Members and 1 Guest are viewing this topic.

Offline Tour1

  • Crotch Rocket
  • ****
  • Posts: 1146
  • AREA: Northeast Area
  • COG#: 9226
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #125 on: September 20, 2011, 06:54:32 pm »
Quote
Question for you:  Why do bike tires only last 5 or 6 or 7K miles?
Rumor has it the softer the rubber the greater the traction.
The softer the rubber the less miles you get on the tread.
Rumor provided by a Camaro-driving buddy re drag racing tires circa 1975.
If only I remembered as much of what I learned in my classes...
1987 Concours

Offline Zorlac

  • Crotch Rocket
  • ****
  • Posts: 1261
  • Bulletproof, eh? I'll be the judge of that!
  • AREA: Northeast Area
  • COG#: 6962
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #126 on: September 21, 2011, 01:46:28 am »
Absolutely brilliant.
COG #6962

Offline danodemotoman

  • Sport Tourer
  • *****
  • Posts: 2585
  • Yo Ho, Yo HO, it's a bikers life for me!
  • AREA: Northwest Area
  • COG#: 2877
  • Membership Level: Asst. Area Director
Re: Car tires on motorcycles
« Reply #127 on: September 21, 2011, 07:13:48 am »
 The contact patch is much larger on the car tire.  :-\  At all attitudes and conditions. BTDT   :))
 The CT tread compound is reported and measured with a durometer to be SOFTER than a MC tire.
 So my contact patch on the seat tells me the CT tire lasts longer due to the larger contact patch even with a softer compound.
 Can 50 billion car tires be wrong?
 It is amusing when a poster thinks that guarantees and engineered assessments using a car tire are required yet that rider does not demand the same for a MC tire not recommended by the bike mfg. So use whatever criteria for your choice as you expect of others choice.
 Have you fondled your tread today?   :88:

Offline WillyP

  • I Need a Life
  • ******
  • Posts: 6133
  • Live Free Or Die
    • Suncook Carpentry
  • AREA: Northeast Area
  • COG#: 8799
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #128 on: September 21, 2011, 12:04:40 pm »
So... Why not a CT on the front?
Smart people look like crazy people to stupid people.
pics

Offline Cap'n Bob

  • GOLD STAR
  • *******
  • Posts: 10955
  • AREA: Northeast Area
  • COG#: 7134
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #129 on: September 21, 2011, 12:15:40 pm »
I know a guy who runs a car tire on the rear and a rear tire on the front of his Valkyrie.

Offline Slybones

  • Sport Tourer
  • *****
  • Posts: 2633
  • AREA: Northwest Area
  • COG#: 6953
  • Membership Level: Expired - Expired Term
Re: Car tires on motorcycles
« Reply #130 on: September 21, 2011, 02:47:44 pm »
So... Why not a CT on the front?

It would probably never be able to turn ?
2003 Concours, 121K
2005 GL1800ABS, 52K
COG #6953, IBA 28004

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #131 on: September 21, 2011, 03:18:28 pm »
I know a guy who.....
Fortis non Ferox
 Shafties Can't Wheelie

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #132 on: September 21, 2011, 03:21:41 pm »
THIS guy I do NOT know...


 :-\ :-\ :-\ :-\ :-\
Fortis non Ferox
 Shafties Can't Wheelie

Offline Dave Scott

  • I Need a Life
  • ******
  • Posts: 6840
  • AREA: Southeast Area
  • COG#: 8603
  • Membership Level: Asst. Area Director
Re: Car tires on motorcycles
« Reply #133 on: September 21, 2011, 03:24:06 pm »
So... Why not a CT on the front?

For one, they don't make CTs in the sizes necessary.  very few bikes actually run a rim wide enough.

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #134 on: September 21, 2011, 03:27:43 pm »
Of course car tires are only the "gateway" into more serious forms of insanity.  The examples I've shown are what COULD happen next.
Fortis non Ferox
 Shafties Can't Wheelie

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #135 on: September 21, 2011, 03:31:32 pm »
Unless we crush this movement now there's no telling where this might lead.  THey could start putting pontoons on airplanes and propellers on boats and motors on kites.  We MUST stop the insanity NOW!
Fortis non Ferox
 Shafties Can't Wheelie

Offline 2linby

  • Iron Butt
  • *****
  • Posts: 3711
  • I rode today, did you?
  • AREA: Northwest Area
  • COG#: 5539
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #136 on: September 21, 2011, 08:35:22 pm »
Unless we crush this movement now there's no telling where this might lead.  THey could start putting pontoons on airplanes and propellers on boats and motors on kites.  We MUST stop the insanity NOW!

Relax Francis!
"2linby" Get it? "Tooling by" "Everything is simple, but nothing is easy".
Ex NWAD, AAD, COG #5539, IBA #15034 TEAM OREGON MC Instructor, Mentor 2001 Sonic Blue  166K and counting!
http://tinyurl.com/njas8 (IBA BBG)
http://tinyurl.com/lwelx (Alaska trip

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #137 on: September 21, 2011, 09:01:28 pm »
Unless we crush this movement now there's no telling where this might lead.  THey could start putting pontoons on airplanes and propellers on boats and motors on kites.  We MUST stop the insanity NOW!

Relax Francis!
Not as long as I gotz wurk to do...
 :deadhorse:





 ;)
Fortis non Ferox
 Shafties Can't Wheelie

Offline Necron99

  • Crotch Rocket
  • ****
  • Posts: 1160
  • rise again....
  • AREA: South Central Area
  • COG#: 9384
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #138 on: September 22, 2011, 01:16:56 am »
Wore out a car tire on my VTX 1800... it took me 25,000 miles to do it.  25k miles of peg dragging and daily commuting.  Works great.

Offline wally_games

  • Moped
  • **
  • Posts: 240
  • AREA: South Central Area
  • COG#: forum
  • Membership Level: Expired - Expired Term
Re: Car tires on motorcycles
« Reply #139 on: September 22, 2011, 02:12:22 am »

Offline CRocker

  • Sport Tourer
  • *****
  • Posts: 2239
  • '02 C10 CDA # 416
  • AREA: South Central Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Car tires on motorcycles
« Reply #140 on: September 22, 2011, 02:33:57 am »
Bet you can't do this with a car tire... ...
http://cyclenews.coverleaf.com/cyclenews/20110920/?pg=61&pm=2&u1=friend#pg61


Uhh...bet 99.99% of riders can't do that on motorcycle tires...just sayin...

Offline Dave Scott

  • I Need a Life
  • ******
  • Posts: 6840
  • AREA: Southeast Area
  • COG#: 8603
  • Membership Level: Asst. Area Director
Re: Car tires on motorcycles
« Reply #141 on: September 22, 2011, 12:14:58 pm »
I definitely can't scrape my elbow on my track bike.   ???

Maybe I could if I used a Uniroyal Tiger Paw.  :)

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #142 on: September 22, 2011, 12:18:27 pm »
I've scraped BOTH elbows in a single turn before.  Still got the scars to prove it too.  :))


I have to admit though, it was on motorcycle tires.
Fortis non Ferox
 Shafties Can't Wheelie

Offline Zorlac

  • Crotch Rocket
  • ****
  • Posts: 1261
  • Bulletproof, eh? I'll be the judge of that!
  • AREA: Northeast Area
  • COG#: 6962
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #143 on: September 23, 2011, 12:39:16 am »
Couldn't stand the uber lateral stress, huh?  :motonoises:
COG #6962

Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8809
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Car tires on motorcycles
« Reply #144 on: September 23, 2011, 12:51:06 pm »
Couldn't stand the uber lateral stress, huh?  :motonoises:
Yeah, but my tailor was able to fix the jacket... the pants were another matter altogether.  :sign0137:
Fortis non Ferox
 Shafties Can't Wheelie

Offline Mad River Marc

  • Sport Tourer
  • *****
  • Posts: 2284
  • AREA: Northeast Area
  • COG#: 8442
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #145 on: October 17, 2011, 05:53:53 pm »

Hi Marc,
I've followed this thread with much interest.  My best buddy on a VTX 1800 went to the Darkside and
reports essentially exactly what Dan reports (with fervor).  I'm not sure why, but you seem like this actually makes you mad, like your upset that someone is messing with some natural law.




I don't have anything against using a car tyre actually.  As long as you are aware of the risks and they are acceptable to you then by all means go for it. After all, safe motorcycling is about reducing your risk to personally tolerable levels.  This is the same reason I am pro helmet but anti helmet law,  as long as you know the risks it's your life and your body and you should be free to do whatever you want with it.

What I DO have a problem with, is when people start asking about Darksiding, and get overwhelmed with responses stating "There is no risk, it's perfectly safe, I've been doing it for blah blah miles" and such,   they portray using a car tire as a 100% safe alternative to a MC tire and say it will handle as well blah blah blah.  THAT is what I have a problem with.   

Bottom line (IMHO) there IS a risk associated with running a Car Tyre on a MC,  what degree of risk is it?  I cannot answer that as I am not an engineer (and I suck at math anyway :) ).  Again I'm not saying DON'T do it,  I'm saying know all the FACTS before you make your decision,  if after knowing all the facts, you decide it's an acceptable risk then I support your right to run a car tyre!

Ps,  The lateral stresses placed on a tire are different in a car then a bike so I stand by my statement that they weren't designed for it. (Car's pull sideways bikes lean etc)

« Last Edit: October 17, 2011, 05:55:44 pm by Mad River Marc »
You only need two tools in life – WD-40 and duct tape. If it doesn’t move and should, use the WD-40. If it shouldn’t move and does, use the duct tape.

Offline wild man

  • Crotch Rocket
  • ****
  • Posts: 1206
  • AREA: Southwest Area
  • COG#: 6174
  • Membership Level: Expired - Expired Term
Re: Car tires on motorcycles
« Reply #146 on: October 17, 2011, 06:09:33 pm »
Car tires on choppers were the cool set up in the 70's, but they didnt lean much over anyways.  Too scary a set up for me on a leaning motorcycle..
Bill
USAF Ret, KC0IGL
AMA#333772, IBA#19247
2003 Connie Constance 125K and counting
2007 KLR 650, 1997 ATK 605

Offline danodemotoman

  • Sport Tourer
  • *****
  • Posts: 2585
  • Yo Ho, Yo HO, it's a bikers life for me!
  • AREA: Northwest Area
  • COG#: 2877
  • Membership Level: Asst. Area Director
Re: Car tires on motorcycles
« Reply #147 on: October 22, 2011, 11:38:13 pm »
 Times are a changing.
 Car tires are now radials.

Offline Necron99

  • Crotch Rocket
  • ****
  • Posts: 1160
  • rise again....
  • AREA: South Central Area
  • COG#: 9384
  • Membership Level: Active
Re: Car tires on motorcycles
« Reply #148 on: October 23, 2011, 05:25:58 pm »
I'll accept millions of anecdotal miles of testimony as proof, thanks.  I believe I'm a reasonable person in this regard. 

Offline kilowatt

  • Tricycle
  • Posts: 32
  • AREA: Southwest Area
  • Membership Level: Expired - Expired Term
Re: Car tires on motorcycles
« Reply #149 on: October 31, 2011, 09:07:06 pm »
I wouldn't think of doing this if I hadn't ridden a Goldwing with a ct on it yesterday. This guy had a 160k miles on his GW and was getting 30k miles out of car tires. He rides 2 up pulling a trailer. Not having a lot of seat time on a GW it semed ok to me on the highway and in the turn. If he was changing out motorcycle tires every 3,000 miles he would have put 53 tires on in that time. Is there any brave soul out there who has tryed a ct on the C-14 and willing to report his findings.