Car tires on a motorcycle? - Page 4 - Harley Davidson Forums: Harley Davidson Motorcycle Forum
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post #31 of 78 (permalink) Old 11-15-2012, 04:26 PM
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Originally Posted by Grunt View Post
It is interesting to me that the tire manufactures can not make a bike tire that gets similar mileage to a car tire at a reasonable price.

I understand bikes need a softer compound but my last rear only made it 3500 mile.

I tend to think the technology exists to make a 15 or 20 K tire but they are not produced in the interest of profit.
You might want to keep a closer check on your tire pressure if all you got was 3500 miles???

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post #32 of 78 (permalink) Old 11-15-2012, 06:00 PM
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Reading this thread made made me flash back to a person I used to know in WV who cut the seat belts out of his cars. He said "It ain't something most people would do but I ain't havin' me or my family trapped in a burning car and the seat belt not come undone".

Car tires are not meant to be or designed to be run on a motorcycle. They are flat and a bike needs a rounded tire for the bike to handle as designed. It's dangerous even if no one here has personally had an accident attributed to running car tire on their bike. I'm not taking that chance.

Car tire are designed to be run flat. NOT on their sidewalls. Observe... and these are slow easy corners.

Car Tire on a Goldwing.. rightside up! - YouTube

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post #33 of 78 (permalink) Old 11-15-2012, 06:40 PM
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Quote:
Originally Posted by Ratso View Post
Reading this thread made made me flash back to a person I used to know in WV who cut the seat belts out of his cars. He said "It ain't something most people would do but I ain't havin' me or my family trapped in a burning car and the seat belt not come undone".

Car tires are not meant to be or designed to be run on a motorcycle. They are flat and a bike needs a rounded tire for the bike to handle as designed. It's dangerous even if no one here has personally had an accident attributed to running car tire on their bike. I'm not taking that chance.

Car tire are designed to be run flat. NOT on their sidewalls. Observe... and these are slow easy corners.

Car Tire on a Goldwing.. rightside up! - YouTube
Now imagine it more on its sidewall, because any Harley has more lean angle then a wing

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post #34 of 78 (permalink) Old 12-04-2012, 09:38 PM
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I had a steel-belted radial car tire on the rear of my 62 Pan for 18 years. Now granted, the engine, front end and trans were 62. The frame, rear wheel and brakes were 48E. I didn't carve corners dragging pegs n pipes. The front brakes [62] were horrible, the rear brakes [48] were very good, until hot, then would fade to horrible. The car tire would pitch the rear of the bike into a curve. I was used to it and it worked fine. I rode in heavy rain and snow, and it performed as expected and lasted forever. Now bikes have twice the horsepower, and great brakes. We expect more from them. We push them much harder. Can you run car tires on a bike, Yes. Will it perform differently, Yes. Will they last longer, Yes. Will you like them, Probably not. Like I said, I ran one for 18 years and I was happy with them. Would I try them on my 03 Softy, No. I push it a lot harder than the Pan.
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post #35 of 78 (permalink) Old 12-04-2012, 09:43 PM
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Originally Posted by XL1200R View Post
Now imagine it more on its sidewall, because any Harley has more lean angle then a wing
Funny, I grind both sides of my Softail into the pavement and mine has never hit the sidewall.

News flash.....That doesn't happen.

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post #36 of 78 (permalink) Old 12-05-2012, 06:45 AM
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Originally Posted by Labradaddy View Post
Funny, I grind both sides of my Softail into the pavement and mine has never hit the sidewall.

News flash.....That doesn't happen.
It won't happen if you run a motorcycle tire. Did you watch the video I posted above of the Goldwing with the car tire on it?

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post #37 of 78 (permalink) Old 12-05-2012, 11:39 AM Thread Starter
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Originally Posted by Badinfluence View Post
I had a steel-belted radial car tire on the rear of my 62 Pan for 18 years. Now granted, the engine, front end and trans were 62. The frame, rear wheel and brakes were 48E. I didn't carve corners dragging pegs n pipes. The front brakes [62] were horrible, the rear brakes [48] were very good, until hot, then would fade to horrible. The car tire would pitch the rear of the bike into a curve. I was used to it and it worked fine. I rode in heavy rain and snow, and it performed as expected and lasted forever. Now bikes have twice the horsepower, and great brakes. We expect more from them. We push them much harder. Can you run car tires on a bike, Yes. Will it perform differently, Yes. Will they last longer, Yes. Will you like them, Probably not. Like I said, I ran one for 18 years and I was happy with them. Would I try them on my 03 Softy, No. I push it a lot harder than the Pan.
Thanks for the in-depth reply! I'm still gathering data, and will probably decide whether or not to give it a try sometime this next spring or summer.

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post #38 of 78 (permalink) Old 12-05-2012, 01:02 PM
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post #39 of 78 (permalink) Old 12-05-2012, 03:33 PM
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I have a friend that runs a car tire on the back of 2 goldwings and a valkryie interstate. All are very heavy powerful bikes. He ussually pulls out with the front tire skipping the ground and takes curves scraping the floorboards. He has done this for years and has had no problem. But i still am not buying a car tire. It would dry rot in 3yrs anyway and thats about how often i put tires on mine.
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post #40 of 78 (permalink) Old 12-05-2012, 03:51 PM
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Quote:
Originally Posted by Grunt View Post
It is interesting to me that the tire manufactures can not make a bike tire that gets similar mileage to a car tire at a reasonable price.

I understand bikes need a softer compound but my last rear only made it 3500 mile.

I tend to think the technology exists to make a 15 or 20 K tire but they are not produced in the interest of profit.

Ive been through 2set of the oem dunlops on a heavy ultra, 900lbs plus me and wife make total about 1400lbs, and both got me 13k. Michelin is claiming over 20k on the rear of their commander 2.
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